Bolts and Machine Screws - Metric - Westfield Fasteners Ltd

Fastener Material Key
A1	A1 Stainless Steel - Also known as grade 303. A general purpose grade of stainless steel but with better fabrication/machining properties than grade 304.
A2	A2 Stainless Steel - Also known as grade 304 or 18/8. A general purpose grade of stainless steel.
A4	A4 Stainless Steel - Also known as grade 316 or 18/8/3. A higher corrosion resistant, marine grade of stainless steel.
A4-80	A4-80 Stainless Steel - Identical corrosion resistance to A4-70 but with a higher tensile strength equivalent to that of 8.8 high tensile steel.
BO-10.9	Black Oxide High Tensile Steel Class 10.9 - A high tensile non-stainless grade with a black oxide finish offering limited corrosion resistance.
BO-12.9	Black Oxide High Tensile Steel Class 12.9 - A high tensile non-stainless grade with a black oxide finish offering limited corrosion resistance.
Brass	Brass - Offers an attractive, corrosion resistant finish.
Nickel Brass	Nickel Plated Brass - Nickel finished brass offering a warm toned white metal aesthetic.
BZP	Bright Zinc Plated (BZP) Steel - Non-stainless standard steel grade offering a basic level of corrosion resistance.
BZP-10.9	Bright Zinc Plated (BZP) Class 10 High Tensile Steel - A high strength non-stainless grade for screws and bolts, with a basic level of corrosion resistance.
BZP-12.9	Bright Zinc Plated (BZP) Class 12 High Tensile Steel - A higher tensile non-stainless grade for screws and bolts, with a basic level of corrosion resistance.
BZP-8.8	Bright Zinc Plated (BZP) Class 8 High Tensile Steel - The general purpose high tensile grade for screws and bolts, with a basic level of corrosion resistance.
Duplex	Duplex Stainless Steel 1.4462 - A type of stainless steel which has greater corrosion resistance than A4 / 316 and a high tensile strength of minimum 700 N/mm2. Also known as 318LN.
Nylon	Plastic (Nylon Polyamide) - A tough lightweight plastic, strong at low temperatures, with excellent resistance to chemicals, and features favourable sliding friction behaviour.
PE-Blk	Plastic (Black Polyethylene) - Has good barrier properties and good chemical resistance against acid, greases, and oil.
PE-White	Plastic (White Polyethylene) - Has good barrier properties and good chemical resistance against acid, greases, and oil.
ZnFlk-10.9	Organic Zinc Flake Coated Class 10 High Tensile Steel - A higher tensile non-stainless grade for screws and bolts. Coated with superior mechanically applied zinc with corrosion resistance lasting 480 hours in the salt spray test.
ZnFlk-12.9	Organic Zinc Flake Coated Class 12 High Tensile Steel - A higher tensile non-stainless grade for screws and bolts. Coated with superior mechanically applied zinc with corrosion resistance lasting 480 hours in the salt spray test.

Hex Head Setscrews DIN 933 (ISO 4017) in A2 Stainless Steel

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Hex Head Setscrews DIN 933 (ISO 4017) in A2 Stainless Steel

Commonly referred to as a setscrew or simply as a bolt. The fully threaded DIN 933 or ISO 4017 should not be confused with its DIN 931 equivalent. A standard spanner or ratchet is typically used to fit this product. Used for decades on all types of assembly throughout the world. As with the DIN 931 hex bolt, the hex drive allows a higher torque to be applied. All parts are to DIN 933 except where shown otherwise. The alternative standard ISO 4017 specifies differences in head dimensions for M10, M12 and M14 thread diameters from DIN 933. Please note that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not "in absolute accordance with" the standard specified.

A2

A4

A4-80

Brass

BZP-10.9

BZP-8.8

Duplex

Nylon

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

M14

M16

M18

M20

M22

M24

M27

M30

Hex Head Setscrews ISO 4017 in Organic Zinc Flake Coated Class 10 High Tensile Steel

image chamfer for Hex Head Setscrews ISO 4017

Hex Head Setscrews ISO 4017 in Organic Zinc Flake Coated Class 10 High Tensile Steel

Metric fully threaded hex bolt or set screw to the newer ISO 4017 standard rather than DIN 933 standard. ISO 4017 specifies differences in head dimensions for M10, M12 and M14 thread diameters, including revised spanner sizes. Please take note!

ZnFlk-10.9

ZnFlk-12.9

M6

M8

M10

M12

M16

M18

M20

M24

M30

Hex Head Bolts DIN 931 (ISO 4014) in A2 Stainless Steel

image chamfer for Hex Head Bolts DIN 931 (ISO 4014)

Hex Head Bolts DIN 931 (ISO 4014) in A2 Stainless Steel

The most common type of fastener, a hex head bolt is designed to be tightened with a standard spanner or ratchet and socket. Popularly used in all assemblies, a standard hex bolt is a staple across the world. Manufactured to ISO 4014 or DIN 931, and therefore includes an unthreaded section of the shaft. A hex drive permits a greater torque load to be applied to the joint over most other drive types. Please note that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not "in absolute accordance with" the standard specified.

A2

A4

A4-80

BZP-10.9

BZP-8.8

Duplex

Nylon

M5

M6

M8

M10

M12

M14

M16

M20

M24

M30

Hex Head Setscrews With Fine Pitch Thread DIN 961 in A2 Stainless Steel

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Hex Head Setscrews With Fine Pitch Thread DIN 961 in A2 Stainless Steel

A metric fine thread version of the common DIN 933 / ISO 4017 hexagon head set screw. Fine pitch variant screws have some distinct advantages over their coarse pitch counterparts. Size for size they are stronger than the coarse thread versions "in tension" as there is a larger stress (contact) area. They also have a larger minor diameter meaning shear is less likely. Fine Pitch set screws have less tendancy to loosen as they have a much smaller thread incline. Fine pitch bolts should be preferred if being used to adjust settings, as they give closer, more precise control. Some downsides of using Fine pitch bolts or screws are that they are slower to install, so not ideal where quick fitment and removal are required, and stainless steel variants are more likely to suffer from thread galling (see our reference section).

A2

BZP-10.9

BZP-8.8

M8

M10

M12

M16

Socket Head Cap Screws DIN 912 (ISO 4762) in A2 Stainless Steel

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Socket Head Cap Screws DIN 912 (ISO 4762) in A2 Stainless Steel

Also known as an Allen screw or Allen bolt, or simply a cap screw. Socket Head Cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to DIN 912 or ISO 4762. Please note that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not "in absolute accordance with" the standard specified.

A2

A4

A4-80

BZP-12.9

Duplex

Nylon

ZnFlk-12.9

M1.6

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

M14

M16

M18

M20

M22

M24

M27

M30

Socket Head Cap Screws With Full Thread DIN 912 (ISO 4762) in A2 Stainless Steel

image chamfer for Socket Head Cap Screws With Full Thread DIN 912 (ISO 4762)

Socket Head Cap Screws With Full Thread DIN 912 (ISO 4762) in A2 Stainless Steel

Also known as an Allen screw or Allen bolt, or simply a cap screw. Socket Head Cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to ISO 4762 or DIN 912, the contact surfaces of this screw or bolt are protected from external damage. This variant is supplied fully threaded regardless of length of screw.

A2

M5

M6

M8

M10

M12

Socket Head Cap Screws With Fine Pitch Thread DIN 912 (ISO 4762) in A4-80 Stainless Steel

image chamfer for Socket Head Cap Screws With Fine Pitch Thread DIN 912 (ISO 4762)

Socket Head Cap Screws With Fine Pitch Thread DIN 912 (ISO 4762) in A4-80 Stainless Steel

Fine pitch screws are used in conjunction with a fine pitch threaded hole, or with fine pitch nuts which are also available on this website. The extra thread engagement gained from the finer pitch gives a more secure and stronger fitment. Used where high levels of strength are required - a fine pitch bolt has a larger stress area creating better tension than its coarse pitch counterpart, also they are less inclined to loosening through vibration due to the thread incline being smaller.

A4-80

BZP-12.9

M10

Socket Low Head Cap Screws DIN 7984 in A2 Stainless Steel

image chamfer for Socket Low Head Cap Screws DIN 7984

Socket Low Head Cap Screws DIN 7984 in A2 Stainless Steel

Similar to the DIN 912 socket cap screw but with a lower head height and smaller hex drive, the DIN 7984 is used where space is limited. This range is generally manufactured with a partial thread beyond a certain length and nominal diameter combination, but occasionally some stock may include a fully threaded shank at the same combination.

A2

A4

BZP-8.8

M3

M4

M5

M6

M8

M10

M12

Socket Head Button Screws ISO 7380 part 1 in A2 Stainless Steel

Socket Head Button Screws ISO 7380 part 1 in A2 Stainless Steel

A popular and attractive socket head screw, typically used where aesthetics are important, or where a lower profile domed finish is required. The hex drive is generally smaller than other hex driven ranges and thus the ultimate tightening torque is reduced. Manufactured to ISO 7380, and almost always fully threaded.

A2

A4

BZP-10.9

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

Socket Head Button Screws With Flange ISO 7380 part 2 in A2 Stainless Steel

Socket Head Button Screws With Flange ISO 7380 part 2 in A2 Stainless Steel

A popular and attractive socket head screw with an integrated flange offering a wider head for bolting softer materials. Typically used where aesthetics are important, or where a lower profile domed finish is required. The hex drive is generally smaller than other hex driven ranges and thus the ultimate tightening torque is reduced. Manufactured to ISO 7380, the same standard as the non flanged variant, and always fully threaded.

A2

A4

BZP-10.9

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

Socket Head Countersunk Screws ISO 10642 (DIN 7991) in A2 Stainless Steel

image chamfer for Socket Head Countersunk Screws ISO 10642 (DIN 7991)

Socket Head Countersunk Screws ISO 10642 (DIN 7991) in A2 Stainless Steel

A countersunk headed screw conforming with ISO 10642 or DIN 7991, requiring a hex key (otherwise known as an Allen key) to fit. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank. The head diameter is slightly larger than that of the equivalent DIN 965 Phillips or Pozi driven screw.

A2

A4

BZP-10.9

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

M16

M20

M24

Hex Head Flange Bolts without Serrations EN 1665 / DIN 6921 in A2 Stainless Steel

image chamfer for Hex Head Flange Bolts without Serrations EN 1665 / DIN 6921

Hex Head Flange Bolts without Serrations EN 1665 / DIN 6921 in A2 Stainless Steel

The DIN 6921 or EN 1665 flange bolt is a hexagon headed bolt or screw incorporating a flange, negating the need for a washer. Flange bolts are a more attractive alternative to their DIN 931 and DIN 933 hex driven counterparts. Typically used where the flange offers protection for the bolted component and where the driving tool may otherwise scratch its surface. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank. This variant is plain, unserrated under the head.

A2

BZP-10.9

BZP-8.8

M5

M6

M8

M10

M12

Hex Head Flange Bolts with Serrations EN 1665 / DIN 6921 in A2 Stainless Steel

image chamfer for Hex Head Flange Bolts with Serrations EN 1665 / DIN 6921

Hex Head Flange Bolts with Serrations EN 1665 / DIN 6921 in A2 Stainless Steel

The DIN 6921 or EN 1665 flange bolt is a hexagon headed bolt or screw incorporating a flange, negating the need for a washer. Flange bolts are a more attractive alternative to their DIN 931 and DIN 933 hex driven counterparts. Typically used where the flange offers protection for the bolted component and where the driving tool may otherwise scratch its surface. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank. This variant includes serrations under the head.

A2

BZP-10.9

BZP-8.8

M5

M6

M8

M10

M12

Unbrako Durlok Hexagon Flange Screws in Black Oxide High Tensile Steel Class 12.9

image chamfer for Unbrako Durlok Hexagon Flange Screws

Unbrako Durlok Hexagon Flange Screws in Black Oxide High Tensile Steel Class 12.9

Unbrako Durlok® self locking, anti vibration hex head flange bolts. These are serrated flanged hex head bolts, which can be paired with the Unbrako Durlok® self locking serrated flanged nut. They both have a high tensile strength of 12.9 and a black oxide/self coloured finish. These heavy duty fasteners are suitable for situations where vibration and jarring occurs and where the joint is subject to high loads. They can be reused, as they are unlikely to be damaged by the adjoining surfaces. Durlok® Bolts are manufactured from alloy steel and are through hardened to give the same hardness from the tooth surface to the core. Durlok® Fasteners can be used at high temperatures up to 300°C.

BO-12.9

M6

M8

M10

M12

M14

M16

Torx Button Screws in A2 Stainless Steel

Torx Button Screws in A2 Stainless Steel

Also known as star, 6 lobe, and hexalobular internal. Torx screws are commonly found on cars, motorcycles, bicycle brake systems, hard disk drives, computer systems and consumer electronics and are becoming increasingly popular. Once, they were typically used in applications requiring tamper resistance; as drivers became more common, tamper-resistant variants were developed. The Torx design allows for a higher torque to be exerted than a similarly sized conventional hex socket head. This button head variant is an attractive screw, typically used where aesthetics are important, or where a lower profile domed finish is required.

A2

M3

M4

M5

M6

M8

M10

Torx Head Cap Screws ISO 14579 (sim. DIN 912) in A2 Stainless Steel

image chamfer for Torx Head Cap Screws ISO 14579 (sim. DIN 912)

Torx Head Cap Screws ISO 14579 (sim. DIN 912) in A2 Stainless Steel

A Torx Key (6 Lobe) driven example of the more familiar Socket Head Cap Screw, these are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A Torx key (6 lobe) is required to fit these fasteners and gives a much more secure drive allowing for more torque and a surer tightening feel. Conforming to ISO 4762 or DIN 912, the contact surfaces of this screw or bolt are protected from external damage. Generally manufactured with a partial thread beyond a certain length and nominal diameter combination, but occasionally some stock may include a fully threaded shank at the same combination. Ideal for uses where there is little room or clearance for securing.

A2

M2

M2.5

M3

M4

M5

M6

M8

Torx Cap Screws With Low Head ISO 14580 or DIN 7984 in A2 Stainless Steel

image chamfer for Torx Cap Screws With Low Head ISO 14580 or DIN 7984

Torx Cap Screws With Low Head ISO 14580 or DIN 7984 in A2 Stainless Steel

Similar to the DIN 912 torx cap screw but with a lower head height and smaller Torx Key (6 lobe drive), the ISO 14580 (DIN 7984) is used where space is limited. This range is generally manufactured with a partial thread beyond a certain length and nominal diameter combination, but occasionally some stock may include a fully threaded shank at the same combination.

A2

M3

M4

M5

M6

M8

Torx Cap Screws With Low Head ISO 14580 in Bright Zinc Plated (BZP) Class 8 High Tensile Steel

image chamfer for Torx Cap Screws With Low Head ISO 14580

Torx Cap Screws With Low Head ISO 14580 in Bright Zinc Plated (BZP) Class 8 High Tensile Steel

Similar to the DIN 912 torx cap screw but with a lower head height and smaller Torx Key (6 lobe drive), the ISO 14580 is used where space is limited. Please note that 8.8 high tensile variants of this product are produced with a full thread only.

BZP-8.8

M3

M4

M5

M6

M8

Slotted Hex Head Setscrews (DIN 933) in A2 Stainless Steel

image chamfer for Slotted Hex Head Setscrews (DIN 933)

Slotted Hex Head Setscrews (DIN 933) in A2 Stainless Steel

Hexagon Head Set Screw with Slot. Manufactured similar to ISO 4017 (DIN 933) and always fully threaded. Perfect for use where a spanner or socket are unable to be utilised.

A2

M4

M5

M6

M8

Pin Torx Button Security Screws in A2 Stainless Steel

Pin Torx Button Security Screws in A2 Stainless Steel

A tamper resistant screw requiring specialist Torx drive tooling to fit. This button head variant is an attractive screw, typically used where aesthetics are important, or where a lower profile domed finish is required. Uses include street furniture and garden equipment. Also known as a Star or 6 Lobe Drive. Please call us if the multi-tool security drive bits are required.

A2

M3

M4

M5

M6

M8

M10

Pin 5 Lobe Button Security Screws in A4 Stainless Steel

Pin 5 Lobe Button Security Screws in A4 Stainless Steel

These attractive 5-Lobe Pin security machine screws offer an improved tamper resistance compared to the more commonly available 6-Lobe Pin drive. The tooling is therefore more specialised and harder for members of the public to get hold of. Also known as torx plus or pentalobe screws, this variant has a button head. Torx and other lobed drive designs allows for a higher torque to be exerted than a similarly sized conventional hex socket head.

A4

M3

M4

M5

M6

M8

Pin Torx Countersunk Security Screws in A2 Stainless Steel

image chamfer for Pin Torx Countersunk Security Screws

Pin Torx Countersunk Security Screws in A2 Stainless Steel

A tamper resistant torx driven screw requiring specialist drive tooling to fit and remove. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. Great for anti-vandalism solutions or where a degree of security is required. Also known as Star Drive or Six Lobe Drive. Please call us if the multi-tool security drive bits are required.

A2

M3

M4

M5

M6

M8

M10

Pin 5 Lobe Countersunk Security Screws in A4 Stainless Steel

image chamfer for Pin 5 Lobe Countersunk Security Screws

Pin 5 Lobe Countersunk Security Screws in A4 Stainless Steel

These attractive 5-Lobe Pin security machine screws offer an improved tamper resistance compared to the more commonly available 6-Lobe Pin drive. The tooling is therefore more specialised and harder for members of the public to get hold of. Also known as torx plus or pentalobe screws, this variant has a countersunk head. Torx and other lobed designs allows for a higher torque to be exerted than a similarly sized conventional hex socket head.

A4

M3

M4

M5

M6

M8

One Way Security Screws in A2 Stainless Steel

image chamfer for One Way Security Screws

One Way Security Screws in A2 Stainless Steel

One Way Security Screws also known as Clutch Head Security Screws. These screws are designed to only be turned in a clockwise direction so once tightened into position they are difficult to remove (unless you have a specialist removal tool). Can be fitted using a standard slotted screwdriver and ideal for use in applications such as access panels, number plates and many anti-vandalism securing solutions.

A2

M3

M4

M5

M6

M8

Unbrako Socket Head Cap Screws ISO 4762 in Black Oxide High Tensile Steel Class 12.9

image chamfer for Unbrako Socket Head Cap Screws ISO 4762

Unbrako Socket Head Cap Screws ISO 4762 in Black Oxide High Tensile Steel Class 12.9

Also known as an Allen screw or Allen bolt, or simply a cap screw. Socket Head Cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to ISO 4762 or DIN 912, the contact surfaces of this screw or bolt are protected from external damage. UNBRAKO® branded and manufactured to be stronger than the other size for size high tensile versions. Includes a precision hex socket for maximum key engagement. Please note that due to the nature of the surface finish on Unbrako products, some surface corrosion may be evident. This does not affect the performance of the product. Property class of 12.9.

BO-12.9

M1.6

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

M14

M16

M18

M20

M22

M24

M30

M36

Unbrako Socket Head Button Screws ISO 7380 in Black Oxide High Tensile Steel Class 12.9

Unbrako Socket Head Button Screws ISO 7380 in Black Oxide High Tensile Steel Class 12.9

Socket Head Button Screws in a Black Oxide Finish. A popular socket head screw, typically used where a lower profile domed finish is required. UNBRAKO® branded and manufactured to be stronger than the other size for size high tensile versions. Includes a precision hex socket for maximum key engagement. Recommended for moderate applications such as machine guards, hinges and covers. Please note that due to the nature of the surface finish on Unbrako products, some surface corrosion may be evident. This does not affect the performance of the product. Property class of 12.9, similar to ISO 7380.

BO-12.9

M3

M4

M5

M6

M8

M10

M12

Unbrako Socket Head Button Screws with Flange ISO 7380 part 2 in Black Oxide High Tensile Steel Class 12.9

Unbrako Socket Head Button Screws with Flange ISO 7380 part 2 in Black Oxide High Tensile Steel Class 12.9

High Tensile Socket Head Flange Button Screws in a Black Oxide Finish. A popular and attractive socket screw with an integrated flange offering a wider head for bolting softer materials, and used where a lower profile finish is required. UNBRAKO® branded and manufactured to be stronger than the other size for size high tensile versions. Includes a precision hex socket for maximum key engagement. Recommended for moderate applications such as machine guards, hinges and covers. Please note that due to the nature of the surface finish on Unbrako products, some surface corrosion may be evident. This does not affect the performance of the product. Property class of 12.9, similar to ISO 7380 part 2.

BO-12.9

M3

M4

M5

M6

M8

M10

Unbrako Socket Head Countersunk Screws ISO 10642 in Black Oxide High Tensile Steel Class 12.9

image chamfer for Unbrako Socket Head Countersunk Screws ISO 10642

Unbrako Socket Head Countersunk Screws ISO 10642 in Black Oxide High Tensile Steel Class 12.9

A countersunk headed screw conforming with ISO 10642 or DIN 7991, requiring a hex key (otherwise known as an Allen key) to fit. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. The head diameter is slightly larger than that of the equivalent DIN 965 Phillips or Pozi driven screw. UNBRAKO® branded and manufactured to be stronger than the other size for size high tensile versions. Includes a precision hex socket for maximum key engagement. Please note that due to the nature of the surface finish on Unbrako products, some surface corrosion may be evident. This does not affect the performance of the product. Property class of 12.9.

BO-12.9

M3

M4

M5

M6

M8

M10

M12

M16

M20

Unbrako Socket Low Head Cap Screws DIN 7984 in Black Oxide High Tensile Steel Class 10.9

image chamfer for Unbrako Socket Low Head Cap Screws DIN 7984

Unbrako Socket Low Head Cap Screws DIN 7984 in Black Oxide High Tensile Steel Class 10.9

High quality and high strength low profile socket head cap screws. Unbrako branded, with a black oxide finish. Also know as low head Allen screws or bolts, or simply a low head cap screw. Used where there is limited clearance. Includes a precision hex socket for maximum key engagement. Please note that due to the nature of the surface finish on Unbrako products, some surface corrosion may be evident. This does not affect the performance of the product. Conforms to ISO 262, DIN 7984, 6912, ANSI B1.13M, with a property class of 10.9.

BO-10.9

M4

M5

M6

M8

M10

M12

M16

M20

HoloKrome Socket Head Cap Screws in Black Oxide High Tensile Steel Class 12.9

image chamfer for HoloKrome Socket Head Cap Screws

HoloKrome Socket Head Cap Screws in Black Oxide High Tensile Steel Class 12.9

Holo-Krome branded socket head cap screws, in alloy steel with a strength grade of 12.9, and finished with black oxide. Manufactured in the USA, Holo-Krome are high quality screws, similar to Unbrako, with precision 3A threads for greater clamping force. Designed for critical applications, Holo-Krome screws have a unique Holo-Code stamped in the head, along with the diameter and pitch of the screw, simplifying identification and traceability for users. Socket head cap screws are also known as an Allen screws or Allen bolts. A hex key (otherwise known as an Allen key or hex socket) is required to fit these fasteners. Conforming to ISO 4762 or DIN 912.

BO-12.9

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

M14

M16

M20

M24

HoloKrome Socket Head Button Screws in Black Oxide High Tensile Steel Class 12.9

HoloKrome Socket Head Button Screws in Black Oxide High Tensile Steel Class 12.9

Holo-Krome branded socket button screws, in alloy steel with a strength grade of 12.9, and finished with black oxide. Manufactured in the USA, Holo-Krome are high quality screws, similar to Unbrako, with precision 3A threads for greater clamping force. Socket button head screws have a lower wider head than the socket head cap screws and tend to be used where the head of the bolt will not cause snagging. The hex drive is generally smaller than other hex driven ranges and thus the ultimate tightening torque is reduced (see data sheet). Manufactured to ISO 7380 and are fully threaded.

BO-12.9

M3

M4

M5

M6

M8

M10

HoloKrome Socket Head Countersunk Screws in Black Oxide High Tensile Steel Class 12.9

image chamfer for HoloKrome Socket Head Countersunk Screws

HoloKrome Socket Head Countersunk Screws in Black Oxide High Tensile Steel Class 12.9

Holo-Krome branded socket countersunk screws (or flat head screws), in alloy steel with a strength grade of 12.9, and a black oxide finish. Manufactured in the USA, Holo-Krome are high quality screws, similar to Unbrako, with precision 3A threads for greater clamping force. Conforming to ISO 10642/DIN 7991, these require a hex socket/allen key to fit. The countersunk head is used in conjunction with a countersunk hole or countersunk washer.

BO-12.9

M3

M4

M5

M6

M8

M10

M12

M16

HoloKrome Socket Low Head Cap Screws in Black Oxide High Tensile Steel Class 10.9

image chamfer for HoloKrome Socket Low Head Cap Screws

HoloKrome Socket Low Head Cap Screws in Black Oxide High Tensile Steel Class 10.9

Holo-Krome branded socket cap low screws, in alloy steel with a tensile strength of 10.9, and finished with black oxide. Manufactured in the USA, Holo-Krome are high quality screws, similar to Unbrako, with precision 3A threads for greater clamping force. The fillet between the head and the body is closely controlled for maximum fatigue strength. Similar to DIN 7984, socket cap low head screws are designed to be used in applications where the head height needs to be limited. The reduced head height and therefore more shallow socket depth, means that the preload cannot be as high as for standard socket head cap screw (see data sheet).

BO-10.9

M4

M5

M6

M8

M10

M12

M16

Phillips Pan Head Machine Screws DIN 7985 H in A2 Stainless Steel

image chamfer for Phillips Pan Head Machine Screws DIN 7985 H

Phillips Pan Head Machine Screws DIN 7985 H in A2 Stainless Steel

A Machine screw with a phillips drive, designed to be tightened with a screwdriver. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary. Conforms with DIN 7985. Sometimes considered more attractive than a pozidriv equivalent.

A2

A4

M2

M2.5

M3

M4

M5

M6

M8

Phillips Raised Csk Machine Screws DIN 966 H in A2 Stainless Steel

image chamfer for Phillips Raised Csk Machine Screws DIN 966 H

Phillips Raised Csk Machine Screws DIN 966 H in A2 Stainless Steel

To DIN 966. A countersunk headed screw incorporating a slightly raised head which gives it an attractive finish when fitted. Phillips driven and a very popular fixing.

A2

M3

M4

M5

M6

M8

Phillips Csk Machine Screws DIN 965 H in A2 Stainless Steel

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Phillips Csk Machine Screws DIN 965 H in A2 Stainless Steel

A popular machine screw with a phillips drive. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. These items are always fully threaded. Conforms to DIN 965. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary.

A2

M1.6

M2

M2.5

M3

M4

M5

M6

M8

M10

Pozi Pan Head Machine Screws DIN 7985 Z in A2 Stainless Steel

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Pozi Pan Head Machine Screws DIN 7985 Z in A2 Stainless Steel

A Machine screw with a pozi drive, designed to be tightened with a screwdriver. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary. Conforms with DIN 7985.

A2

A4

BZP

M2

M2.5

M3

M3.5

M4

M5

M6

M8

Pozi Raised Csk Machine Screws DIN 966 Z in A2 Stainless Steel

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Pozi Raised Csk Machine Screws DIN 966 Z in A2 Stainless Steel

To DIN 966. A countersunk headed screw incorporating a slightly raised head which gives it an attractive finish when fitted. This variant is Pozi driven and a very popular fixing.

A2

M2

M2.5

M3

M4

M5

M6

M8

Pozi Csk Machine Screws DIN 965 Z in A2 Stainless Steel

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Pozi Csk Machine Screws DIN 965 Z in A2 Stainless Steel

A popular machine screw with a pozi drive. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. These items are always fully threaded. Conforms to DIN 965. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary.

A2

A4

BZP

M1.6

M2

M2.5

M3

M3.5

M4

M5

M6

M8

Slotted Pan Head Machine Screws DIN 85 in A2 Stainless Steel

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Slotted Pan Head Machine Screws DIN 85 in A2 Stainless Steel

Similar to DIN 84, but with a larger head diameter and a slightly different head profile. Manufactured to ISO 1580 or DIN 85. Please note that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not "in absolute accordance with" the standard specified.

A2

A4

Brass

Nylon

M2

M2.5

M3

M3.5

M4

M5

M6

M8

M10

Slotted Raised Countersunk Machine Screws DIN 964 in A2 Stainless Steel

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Slotted Raised Countersunk Machine Screws DIN 964 in A2 Stainless Steel

A raised countersunk headed screw offering an attractive finish. Always fully threaded, and includes an old style slot drive for fitting.

A2

Brass

Nickel
Brass

M2

M2.5

M3

M4

M5

M6

M8

M10

Slotted Countersunk Machine Screws DIN 963 in A2 Stainless Steel

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Slotted Countersunk Machine Screws DIN 963 in A2 Stainless Steel

A slot drive, countersunk headed screw, typically used in conjunction with a countersunk hole which provides a flush, snag free fit.

A2

A4

Brass

BZP

M2

M2.5

M3

M4

M5

M6

M8

M10

Slotted Cheese Head Machine Screws DIN 84 in A2 Stainless Steel

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Slotted Cheese Head Machine Screws DIN 84 in A2 Stainless Steel

A machine screw with a traditional slot drive and a flat topped near cylindrical shaped head. Manufactured to ISO 1207 or DIN 84. Please note that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not "in absolute accordance with" the standard specified.

A2

A4

Brass

BZP

Nylon

M2

M2.5

M3

M4

M5

M6

M8

Slotted Mushroom Head Screws in A2 Stainless Steel

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Slotted Mushroom Head Screws in A2 Stainless Steel

A wide headed, lower profile screw with a traditional slot drive. Used for bolting softer materials. This unusual fastener is always manufactured with a full thread.

A2

M3

M4

M5

M6

M8

Torx Pan Head Screws Sim. DIN 7985 in A2 Stainless Steel

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Torx Pan Head Screws Sim. DIN 7985 in A2 Stainless Steel

Also known as star, 6 lobe, and hexalobular internal. Torx screws are commonly found on cars, motorcycles, bicycle brake systems, hard disk drives, computer systems and consumer electronics and are becoming increasingly popular. Once, they were typically used in applications requiring tamper resistance; as drivers became more common, specific tamper-resistant variants were developed. The Torx design allows for a higher torque to be exerted than a similarly sized conventional hex socket head. Conforms with DIN 7985.

A2

A4

M2

M2.5

M3

M4

M5

M6

M8

Torx Pan Head Screws to ISO 14583 in Bright Zinc Plated (BZP) Class 8 High Tensile Steel

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Torx Pan Head Screws to ISO 14583 in Bright Zinc Plated (BZP) Class 8 High Tensile Steel

Also known as star, 6 lobe, and hexalobular internal. Torx screws are commonly found on cars, motorcycles, bicycle brake systems, hard disk drives, computer systems and consumer electronics and are becoming increasingly popular. Once, they were typically used in applications requiring tamper resistance; as drivers became more common, specific tamper-resistant variants were developed. The Torx design allows for a higher torque to be exerted than a similarly sized conventional hex socket head.

BZP-8.8

M3

M4

M5

M6

M8

Torx Button Head Screws With Flange in A2 Stainless Steel

Torx Button Head Screws With Flange in A2 Stainless Steel

A 6 lobe or torx driven variant of the popular flanged socket button screw. Again, torx button flange screws can be employed where aesthetics are important, or where space is limited.

A2

BZP-10.9

M3

M4

M5

M6

M8

M10

M12

Torx Csk Head Screws Sim. ISO 10642 / ISO 14581 in A2 Stainless Steel

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Torx Csk Head Screws Sim. ISO 10642 / ISO 14581 in A2 Stainless Steel

Also known as star, 6 lobe, and hexalobular internal. Torx screws are commonly found on cars, motorcycles, bicycle brake systems, hard disk drives, computer systems and consumer electronics and are becoming increasingly popular. Once, they were typically used in applications requiring tamper resistance; as drivers became more common, specific tamper-resistant variants were developed. The Torx design allows for a higher torque to be exerted than a similarly sized conventional hex socket head.

A2

A4

BZP-8.8

M2

M2.5

M3

M4

M5

M6

M8

Coach Bolts and Nuts DIN 603 (Bolt) DIN 934 (Nut) in Bright Zinc Plated (BZP) Steel

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Coach Bolts and Nuts DIN 603 (Bolt) DIN 934 (Nut) in Bright Zinc Plated (BZP) Steel

Generally used in timber to timber and timber to metal construction, these bolts incorporate a square neck to grip the hole in the timber when fitting, and therefore negates the need for any drive recess to be included on top of the head. Supplied to DIN 603 and DIN 555. Usually manufactured with a full thread, though often some stock may include a partially threaded shank, particularly on longer lengths. Comes complete with hexagon nut to fit.

BZP

M6

M8

M10

M12

M16

Coach Bolts DIN 603 with full thread in A2 Stainless Steel

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Coach Bolts DIN 603 with full thread in A2 Stainless Steel

Generally used in timber to timber and timber to metal construction, these bolts incorporate a square neck to grip the hole in the timber when fitting, and therefore negates the need for any drive recess to be included on top of the head. Supplied to DIN 603. Manufactured with a fully threaded shank. Nuts are supplied seperately, unlike the mild steel versions available elsewhere on the site.

A2

A4

M5

M6

M8

M10

M12

M16

Coach Bolts DIN 603 with partial thread in A2 Stainless Steel

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Coach Bolts DIN 603 with partial thread in A2 Stainless Steel

Generally used in timber to timber and timber to metal construction, these bolts incorporate a square neck to grip the hole in the timber when fitting, and therefore negates the need for any drive recess to be included on top of the head. Supplied to DIN 603. Manufactured with a partially threaded shank. Nuts are supplied seperately, unlike the mild steel versions available elsewhere on the site.

A2

A4

M5

M6

M8

M10

M12

M16

Coach Bolts DIN 603 in Brass

Coach Bolts DIN 603 in Brass

Generally used in timber to timber and timber to metal construction, these bolts incorporate a square neck to grip the hole in the timber when fitting, and therefore negates the need for any drive recess to be included on top of the head. Supplied to DIN 603. Please note that thread lengths stated are a minimum; In some cases a full thread will be supplied where a partial threaded shank is indicated in the specification. Nuts are supplied seperately, unlike the mild steel versions available elsewhere on the site.

Brass

BZP-8.8

M5

M6

M8

Threaded Rod DIN 975 in A2 Stainless Steel

Threaded Rod DIN 975 in A2 Stainless Steel

Flexible usage threaded bar or threaded rod, also known as Studding. Manufactured to DIN 975. Please note that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not "in absolute accordance with" the standard specified.

A2

A4

Brass

Nylon

M6

M8

M10

M12

M16

Cup Point Grub Screws ISO 4029 (DIN 916) in A2 Stainless Steel

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Cup Point Grub Screws ISO 4029 (DIN 916) in A2 Stainless Steel

Also known as a set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a depression called a 'cup' on the opposite end, as to ISO 4029 or DIN 916.

A2

A4

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

M16

Flat Point Grub Screws ISO 4026 / DIN 913 in A2 Stainless Steel

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Flat Point Grub Screws ISO 4026 / DIN 913 in A2 Stainless Steel

Also known as a set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a flat on the opposite end, as to ISO 4026 or DIN 913.

A2

A4

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

M20

Cone Point Grub Screws ISO 4027 / DIN 914 in A2 Stainless Steel

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Cone Point Grub Screws ISO 4027 / DIN 914 in A2 Stainless Steel

Also known as a set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a cone point on the opposite end, as to ISO 4027 or DIN 914.

A2

A4

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

M16

Dog Point Grub Screws ISO 4028 / DIN 915 in A2 Stainless Steel

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Dog Point Grub Screws ISO 4028 / DIN 915 in A2 Stainless Steel

Also known as a set screw, these headless types of screws have many uses. This particular type has a hex socket drive, and a square profiled end called a dog point on the opposite end, as to ISO 4028 or DIN 915.

A2

A4

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

Wing Screws DIN 316 American Form in A2 Stainless Steel

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Wing Screws DIN 316 American Form in A2 Stainless Steel

Wing Screws (American Form) DIN 316 AF. These are designed to be used by hand and can give the user a more accurate adjustment. Employed in applications where the bolts need to be frequently tightened and loosened, negating the need for tooling. With large wings they are comfortable for continuous handling.

A2

M3

M4

M5

M6

M8

M10

Thumb Screws High Type (DIN 464) in A1 Stainless Steel

Thumb Screws High Type (DIN 464) in A1 Stainless Steel

Thumb Screws or Knurled Knob Screws are designed to be tightened and loosened by hand, without the need for a screwdriver or ratchet. The 'knurled' feature of the head makes this type of screw ideal for use where conditions can be challenging such as food preparation or clean room operations. Manufactured to DIN 464.

A1

M3

M4

M5

M6

M8

M10

Slotted Thumb Screws High Type (DIN 465) in A1 Stainless Steel

Slotted Thumb Screws High Type (DIN 465) in A1 Stainless Steel

Slotted Thumb Screws or Slotted Knurled Knob Screws are designed primarily to be tightened and loosened by hand, without the need for a screwdriver or ratchet, but this version comes with a slot in the head for a standard slotted screwdriver. The 'knurled' feature of the head makes this type of screw ideal for use where conditions can be challenging such as food preparation or clean room operations. Manufactured to DIN 465.

A1

M3

M4

M5

M6

Thumb Screw Low Type DIN 653 in A1 Stainless Steel

Thumb Screw Low Type DIN 653 in A1 Stainless Steel

This is the thin type of knurled thumb screw, as it has no shoulder beneath the head, unlike the high type of thumb screws. The large head diameter allows these fasteners to be easily adjusted to a precise tightness by hand. They are frequently used in situations where routine maintenance is required, as they are quicker and easier to fit and adjust in comparison to fasteners which require a driver.

A1

M3

M4

M5

M6

M8

M10

Slotted Large Pan Head Screw DIN 921 in A1 Stainless Steel

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Slotted Large Pan Head Screw DIN 921 in A1 Stainless Steel

These large diameter headed screws offer excellent load distribution and an aesthetically pleasing low-profile head. The wide head also eliminates the need for a washer. Installed using a flat head screwdriver, the slotted pan head screw is useful in situations where a thumbscrew or a standard pan head screw is not suitable.

A1

M2

M3

M4

M5

M6

M8

Eye Bolt DIN 444 / Swing Bolt in A4 Stainless Steel

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Eye Bolt DIN 444 / Swing Bolt in A4 Stainless Steel

DIN 444 eye bolts / swing bolts in A4 stainless steel, with threaded shaft. Ideal for anchoring hooks, attaching rope wire and cables to solid surfaces, such as wood, metal, concrete, etc. The A4 stainless steel, grade 316-NM give it corrosion resistance and durability, making it perfect for marine, food, medical and pharmaceutical industrial enviroments.

A4

M6

M8

M10

M12

M16

M20

Slotted Capstan Screws (DIN 404) in A1 Stainless Steel

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Slotted Capstan Screws (DIN 404) in A1 Stainless Steel

Capstan Screws are designed to be tightened or loosened from the side rather than the top. By inserting a small bar into one of the side radial holes in the head. Manufactured to DIN 404 and with a slotted head. Great for use where there is restricted access to the top of the screw.

A1

M3

M4

M5

M6

Dowel Screw (Hanger Bolt) with metric and wood thread, standard type in A2 Stainless Steel

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Dowel Screw (Hanger Bolt) with metric and wood thread, standard type in A2 Stainless Steel

Also known as hanger bolts. A bolt with a wood thread at one end and a machined metric thread at the other, designed to be driven into a pre drilled pilot hole. Ideal for suspending sheet metal from wooden structures. Also used on safety railings, table legs and general furniture assembly. Some sizes include a central flat or hex drive section: please see the data sheet for more information.

A2

M6

M8

M10

M12

Plastic Head Covers for Hex Screws/Nuts in Plastic (Black Polyethylene)

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Plastic Head Covers for Hex Screws/Nuts in Plastic (Black Polyethylene)

These plastic caps are designed to cover metric hexagon nut or bolt heads. Made from Polyethylene, these caps provide an attractive finish and offer some additional protection against weathering and accidental damage. Available in black or white.

PE-Blk

PE-White