Automotive Nuts And Bolts

Commonly referred to as a setscrew or simply as a bolt. The fully threaded ISO 4017 or DIN 933 should not be confused with it's 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.

Hexagon full nut to DIN standard 934 with standard metric coarse pitch. Typically fitted with a spanner or ratchet with socket. The most popular nut type, and used for decades on all types of assemblies throughout the world. Can be used in conjunction with Hexagon Thin nuts in a 'locking' formation for a more secure fitment. Fine pitch and left hand thread variants are also available immediately below this item.

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.

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.

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. 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. A guaranteed fully threaded variant is also available in some sizes, please call to confirm.

Nut conforming to DIN 439. Also known as a half nut, thin nut, or jam/lock nut. Typically fitted with a spanner or ratchet with socket, often used in pairs or in conjunction with a hexagon full nut in a locking arrangement. A popular nut type, and used for decades on all types of assembly throughout the world. Fine Pitch and Left Hand Thread variants are also available immediately below this item.

Prevailing torque type nut manufactured to DIN 985. Popularly employed Hexagon nut incorporating a nylon insert to help prevent loosening when fitted. This is the standard profile variant (Type T), a higher profile option is available under DIN 982 (Type P). Typically fitted with a spanner or ratchet with socket.

Spring washer designed to help prevent loosening of bolted joints under vibration. This type has a square section and is manufactured to DIN 127.

Prevailing torque type nut manufactured to DIN 982. Hexagon nut incorporating a nylon insert to help prevent loosening when fitted. This is the higher profile (Type P) variant with more available thread engagement and is typically fitted with a spanner or ratchet with socket. A lower profile, where perhaps space is at a premium is also available under DIN 985 (Type T).

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.

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 ISO 7045 or DIN 7985. Sometimes considered more attractive than a pozidriv equivalent.

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 ISO 7046 parts 1 & 2 or DIN 965H. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary.

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 ISO 7045 or DIN 7985.

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 ISO 7046 parts 1 & 2 or DIN 965Z. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary.

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.

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.

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.

A popular nut used in applications where aesthetics are important, giving an attractive look. Domed end also ensures a smooth snag-free finish protecting both the fixing and any foreign body that may come into contact . Also known as an Acorn Nut, these nuts are manufactured to DIN 1587. Also available with a Nyloc insert to DIN 986.

Hexagon Coupling Nuts also known as a long nut, these DIN 6334 connector nuts are typically employed in joining sections of threaded bar/studding together where required.

A standard flat washer for use in just about any assembly. A flat washer's main task is to spread the load across a wider area, which comes in particularly useful when dealing with softer materials. Conforms to DIN 125.

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. Usually manufactured with a full thread, though occasionally some stock may include a partially threaded shank, particularly on longer lengths.

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.

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.

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.

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.

Similar to DIN 84, but with a larger head diameter and a slightly different head profile. Manufactured to ISO 1580 or DIN 85.

A machine screw with a traditional slot drive and a flat topped near cylindrical shaped head. Manufactured to ISO 1207 or DIN 84.

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, and conforms to ASME/ANSI B18.3.

A prevailing torque type hexagon nut incorporating a flange and nylon insert to help prevent loosening when fitted. This particular version has serrations on the base of the flange. A non-serrated version is also available. Manufactured to DIN 6926.

Hexagon full nut with standard metric coarse pitch, but with a Left Handed Thread. To DIN 934. Can only be used in conjunction with Left Hand Thread screws and bolts.

A closed end nut often used when a professional attractive finish is called for. Also the cap helps protect the fixture from foreign object ingress/damage and gives a nice smooth snag-free surface. Conforms to DIN 917.

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.

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.

Flat washer manufactured to BS 3410 Table 3 Light Specification.

Robust flat washer with a large square shape rather than the more usual round. Often used in timber construction and in applications at risk of seismic activity. To DIN 436.

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.

Flexible usage threaded bar or rod to ASME B18. 31. 3.

The DIN 6721 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 where the driving tool may otherwise scratch it's surface. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank.

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.

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.

Slotted or split beam type hexagon all metal locking nut . Manufactured in the UK with the Aerotight trademark. Undersize threaded sections on top portion of nut mean that when tightened into position the undersize section is forced outward creating high friction and a more secure 'locked' fitment. A locking nut for use in higher temperatures where a locking nylon ring nut would be unsuitable.

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.

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.

Hexagon thin, jam, locking or half nut with standard metric coarse pitch, but with a Left Handed Thread. To DIN 439. Only for use in conjunction with Left Handed Thread bolts or screws.

A square profile nut designed for welding to a part to form a threaded insert. The design incorporates a locating boss and welding projections. Conforms to DIN928.

Popularly employed where frequent hand tightening and untightening of joints is required. To the American Form, with less rounded, squared off wings. To DIN 315.

Machined washer designed to accomodate a countersunk headed screw. Offers an attractive finish when employed.

A hexagon nut 1.5 x its nominal diameter in height. Used in clamping applications that require frequent removal and re-fitting. Flat at one end and spherical at the other, so can be used in conjunction with conical seat washers. Manufactured to DIN 6330

Spring washer designed to help prevent loosening of bolted joints under vibration. This type is manufactured to DIN 6796 has an inherent conical shape. Also known as a Belleville washer, disc spring, coned-disc spring and cupped disc washer.

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.

A slotted, castellated or castle nut gets its name from the slot's resemblance to the crenellations of a typical castle. These nuts are usually paired with a split pin or R-clip to form a positive locking device.

A thin or half nut variation of the standard DIN 557 square nut. To DIN 562.

Designed for use when woodworking, providing a threaded insert once fitted. For use on both soft and hard woods, simply drill out a pilot hole of the correct size, hammer into place to give a receiving threaded insert wherever needed. The design incorporates four teeth or prongs for biting into the workpiece. A2 Stainless Steel is suitable for outdoor use with such items as garden furnishings or childrens play equipment. Bright Zinc Plated (BZP) are generally for indoor use or where corrosion is not a concern.

A large diameter washer where the external diameter is typically three times that of the nominal internal diameter. Also known as Form G, and complies with DIN 9021.

A hexagon nut designed for welding to a part to form a threaded insert. The design incorporates a locating boss and welding projections. Conforms to DIN929.

Wave profiled spring washer designed to help prevent loosening of bolted joints under vibration. To DIN 137.

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.

A toothed or perforated washer usually employed in electrical connections such as battery terminals, but can also be used in assemblies to help prevent loosening. This variant includes teeth on the external diameter. Produced to ASME B18.21.1.

Round Coupling Nuts similar to DIN 6334 but with a smooth rounded finish as opposed to hexagonal. Used when connecting two pieces of threaded bar/studding.

A small diameter washer designed for use with screws with small diameter heads. To DIN 433.

An hexagon nut with incorporated flange, to DIN 6923. The flange offers protection for the bolted component where the driving tool may otherwise scratch it's surface. The flange also lessens the need to use a washer. This particular version is non-serrated on the base. A serrated variant is also available.

To ISO 7047 or 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.

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.

To ISO 7047 or 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.

A hexagon nut 1.5 x its nominal diameter in height with a collar, therefore negating the need for a washer. Used in clamping applications that require frequent removal and re-fitting. Manufactured to DIN 6331

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

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.

A rarer design of flat washer with a slightly larger external diameter than a DIN 125 standard form A flat washer. To BS 4320.

Flat washer with reduced outside diameter. Manufactured to NAS620, a standard specified by the Aerospace Industries Association of America.

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.

A prevailing torque type hexagon nut incorporating a flange and nylon insert to help prevent loosening when fitted. This particular version is non-serrated on the base of the flange. A serrated version is also available. Manufactured to DIN 6926.

An hexagon nut with incorporated flange, to DIN 6923. The flange offers protection for the bolted component where the driving tool may otherwise scratch it's surface. The flange also lessens the need to use a washer. This particular version has serrations on the base. A non-serrated variant is also available.

Flexible usage Threaded Bar/Rod, also known as Studding. Manufactured to DIN 975 and currently available is A4 grade Stainless Steel or Brass.

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.

Slotted Round Nuts manufactured to DIN 1804. A nut requiring the use of a C Spanner (DIN 1810) or Hook Spanner. One surface of the nut protrudes and should be used as a mating surface.

Also known as a fender or repair washer, this very popular type offers a large external diameter. Often employed by plasterers, amongst others.

A prevailing torque type locking version sharing the characteristics of the DIN 1587 dome nut. Incorporating a nylon insert to help prevent loosening when fitted. Conforms to DIN 986.

A thinner thickness flat washer. Produced To BS 4320.

Compared to standard hex nuts, square nuts have a greater surface contact with the part being fastened, and therefore provide greater resistance to loosening. They are also much less likely to become rounded-off after repeated loosening/tightening cycles. Manufactured to DIN 557.

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.

Hexagon Coupling Nut also known as an Extension Nut, used for joining two male threads, usually threaded bar/studding but also used on piping. The hexagon shape to the outer of the nut allows for tightening with a spanner /wrench. Sold in various lengths dependent on the application requirements.

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.

A toothed or perforated washer usually employed in electrical connections such as battery terminals, but can also be used in assemblies to help prevent loosening. This variant includes teeth on the external diameter and therefore accords with DIN 6798A.

Popularly employed where frequent hand tightening and untightening of joints is required. To the German Form with slightly larger, rounded wings. To DIN 315.

A toothed or perforated washer usually employed in electrical connections such as battery terminals, but can also be used in assemblies to help prevent loosening. This variant includes teeth on the internal diameter, which leaves a neater finish. Accords with DIN 6798J.

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

Counter Nut also known as a Pal Nut, are a stamped nuts made from sheet metal. They are designed to fit over a normal nut and lock it into place by using a series of protruding flanges that grip the host nut securely. Mainly used in conjunction with a standard hexagon nut. Manufactured to DIN 7967.

Metric Cage Nuts, also known as Captive Nuts or Clip Nuts. The captive nut (usually square in shape), is enclosed in a surrounding cage ready for engaging with a screw later in the assembly process. Due to the 'floating' nature of the nut in the cage, they can be used for slightly adjusting any alignment issues during assembly Perfect for use in the mounting rails of equipment racks such as Data Cabinets.

Spring washer designed to help prevent loosening of bolted joints under vibration. This type has a rectangular section and is manufactured to ASME B18.21.1-1999.

An elliptical offset type hexagon locking nut. Of all metal construction, and can be reused indefinitely. A locking nut for use in higher temperatures where a locking nylon ring nut would be unsuitable.

Knurled Thumb Nuts manufactured to DIN 466. These examples are the high profile thumb nuts and feature knurling for a more assured grip. Made from machineable A1 grade stainless steel, so benefitting from good anti-corrosion properties. Designed to be located and fitted by hand, even in more challenging applications and giving an attractive finish when used.

These washers, as the name suggests, are used in heavy duty applications. Much thicker than other forms of equivalent nominal sizes, tough and corrosion resistant with a larger outer diameter. Manufactured to DIN 7349 and used with bolts with heavy type spring pins, where a larger bearing surface area is required.

Slotted Sleeve Nuts also known as Slotted Barrel or Case nuts. These examples have a slotted raised/oval countersunk head. Internally threaded and giving a smooth flush attractive finish they require a standard flat head screwdriver for fitting. Available in A2 stainless steel, giving great corrosion resistance.

Conical Seat Washers manufactured to DIN 6319 D. Perfect for using in clamping solutions of non parallel surfaces in conjunction with Spherical Washers or hexagon nuts with spherical seating (DIN 6330).

Spherical Washers manufactured to DIN 6319 C. Perfect for using in clamping solutions of non parallel surfaces in conjunction with Conical Seat Washers.

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 ASME B18. 6.3. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary.

Slotted or split beam type hexagon all metal locking nut with UNC Thread form . Manufactured in the UK with the Aerotight trademark. Undersize threaded sections on top portion of nut mean that when tightened into position the undersize section is forced outward creating high friction and a more secure 'locked' fitment. A locking nut for use in higher temperatures where a locking nylon ring nut would be unsuitable.

A countersunk headed screw conforming with ASME/ANSI B18.3, 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.

A popular nut used in applications where aesthetics are important. Also known as an Acorn nut, these nuts are manufactured to ASME B18.2.2, in this instance they have a standard Unified Coarse Thread Pitch (UNC). To be used in conjunction with same sized UNC screws and bolts.

Popularly employed where frequent hand tightening and untightening of joints is required. To ASME B18.6.9.

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 ASME/ANSI B18. 3, 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.

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 ASME/ANSI B18.3, and always fully threaded.

Hexagon full nut to ASME B18.2.2 and B18.6.3. Typically fitted with a spanner or ratchet with socket. The most popular nut type, and used for decades on all types of assembly throughout the world.

Prevailing torque nut, thin type. Popularly employed Hexagon nut incorporating a nylon insert to help prevent loosening when fitted. Typically fitted with a spanner or ratchet with socket.

Also known as a penny or repair washer, this very popular type offers a large external diameter; it is therefore able to spread the load of the joint over a wider area. This is a useful feature when working with softer materials.

Commonly referred to as a setscrew and longer versions are referred to in the United States as a tap bolt. A standard spanner or ratchet is typically used to fit this product. Used for decades on all types of assembly throughout the world. The hex drive allows a higher torque to be applied. Produced to ASME B18.2.1.

Nut conforming to ASME B18.2.2. Also known as a half nut, thin nut, or jam nut. Typically fitted with a spanner or ratchet with socket, often used in pairs in a nut locking arrangement. A popular nut type, and used for decades on all types of assembly throughout the world.

A countersunk headed screw incorporating a slightly raised head which gives it an attractive finish when fitted. Includes a phillips cross recess for driving in. Manufactured to ANSI/ASME B18. 6.3.

Spring washer designed to help prevent loosening of bolted joints under vibration. This type has a square section and is manufactured to DIN 7980.

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.

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.

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 ASME B18. 2.1, and 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.

An hexagon nut with incorporated flange. The flange offers protection for the bolted component where the driving tool may otherwise scratch it's surface. The flange also lessens the need to use a washer. This particular version has serrations on the base.

Also known as a long nut, these coupling or connector nuts are typically employed in joining sections of threaded bar/studding together where required.

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 ASME B18. 2.1, and includes an unthreaded 'shoulder' or portion of the shank. A hex drive permits a greater torque load to be applied to the joint over most other drive types.

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 ASME B18. 6.3.

Hexagon full nut to ASME B18.2.2 and B18.6.3. Typically fitted with a spanner or ratchet with socket. The most popular nut type, and used for decades on all types of assembly throughout the world.

A countersunk headed screw conforming with ASME/ANSI B18.3, 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.

Slotted or split beam type hexagon locking nut, of all metal construction with UNF thread form. Manufactured in the UK with the Aerotight trademark. Undersize threaded sections on top portion of nut mean that when tightened into position the undersize section is forced outward creating high friction and a more secure 'locked' fitment.

Prevailing torque type nut manufactured to IFI-100/107. Popularly employed Hexagon nut incorporating a nylon insert to help prevent loosening when fitted. Typically fitted with a spanner or ratchet with socket.

Popularly employed where frequent hand tightening and untightening of joints is required. To ASME B18.6.9.

Flat washer to American USS specifications, now part of the Unified Thread Standard. Washers with an external diameter larger than that of an equivalent SAE washer, but smaller than a penny/fender washer. Conforms to ASME B18.21.1-1999.

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 ASME/ANSI B18.3, 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.

Imperial Commercial Series washers imported from the USA. Similar thickness to the imperial Table 3 washers, also available on this site, but with a larger outer diameter. Available in 316 (A4) grade stainless steel, so ideal for marine use.

Also known as an Allen 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, and conforms to ASME/ANSI B18.3.

Prevailing torque type nut manufactured to IFI-100/107. Popularly employed Hexagon nut incorporating a nylon insert to help prevent loosening when fitted. Typically fitted with a spanner or ratchet with socket.

Commonly referred to as a setscrew and longer versions are referred to in the United States as a tap bolt. A standard spanner or ratchet is typically used to fit this product. Used for decades on all types of assembly throughout the world. The hex drive allows a higher torque to be applied. Produced to ASME B18.2.1.

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 ASME B18. 6.3.

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 ASME B18. 6.3. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary.

Nut conforming to ASME B18.2.2. Also known as a half nut, thin nut, or jam nut. Typically fitted with a spanner or ratchet with socket, often used in pairs in a nut locking arrangement. A popular nut type, and used for decades on all types of assembly throughout the world.

Military specification general pupose imperial sized round washers. Available in corrosive resistant A2 Stainless and manufactured to MS15795.

A popular nut used in applications where aesthetics are important. Also known as an Acorn nut, these nuts are manufactured to ASME B18.2.2. These have a standard Unified Fine Thread Pitch (UNF). To be used in conjunction with same sized UNF screws and bolts.

Prevailing torque nut, thin type. Popularly employed Hexagon nut incorporating a nylon insert to help prevent loosening when fitted. Typically fitted with a spanner or ratchet with socket.

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 ASME/ANSI B18.3, and always fully threaded.

An hexagon nut with incorporated flange. The flange offers protection for the bolted component where the driving tool may otherwise scratch it's surface. The flange also lessens the need to use a washer. This particular version has serrations on the base.

Flat washer to American SAE specifications, now part of the Unified Thread Standard. Washers with a smaller external diameter than that of an equivalent USS washer. Conforms to ASME B18.21.1-1999.