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Westfield Fasteners Ltd Telephone: 01844201133, Email: enquiries@westfieldfasteners.co.uk
Home   /   Socket Countersunk Screws

Socket Countersunk Screws

Socket Countersunk Screws often know as Flat Head Screws have a countersunk head that when fitted sit flush within the receiving surface. Fastened into place using a Hex, Allen or Torx Key with the newer Torx drive giving a much more engaged drive where more torque can be applied. Available in metric and imperial sizes. Socket Countersunk Screws are a very popular fastener, but care must be taken when purchasing as they may not be supplied fully threaded above certain lengths.
Fastener Material Key
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.
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.
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-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.

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