Screws

Stainless steel screws in A2 (304) and A4 (316), from miniature M1 machine screws up to M42 hex set screws, plus imperial UNC, UNF, BSW and BA sizes.

• Machine screws: pan, cheese, countersunk and raised countersunk heads with slotted, Pozi, Phillips or six lobe drive, from M1 to M16.
• Socket screws: socket cap, low head cap, button, flanged button, countersunk and shoulder screws, all driven with a hex key.
• Set screws and grub screws: fully threaded hex set screws to ISO 4017 and DIN 933, and headless socket set screws with cup, flat, cone or dog points.
• Self-tapping and self-drilling screws: pan, countersunk, raised countersunk and hex head styles. Use them only with the materials stated on each product page.
• Wood, chipboard and coach screws: traditional slotted and Pozi woodscrews, chipboard screws with Pozi or six lobe drive, and hex head coach screws to DIN 571 from M5 to M16.
• Security screws: pin hex, six lobe pin, one-way and two-hole screws for public places and anywhere fixings must resist tampering.

Choose A2 for indoor, workshop and general outdoor use away from the coast, and A4 near the sea or wherever fixings stay wet. Many A4 socket cap screws and hex set screws come in both property class A4-70 and the stronger A4-80. Check each product listing for available sizes, grades and pack quantities.

Sizes, grades and pack quantities vary by product type. Check the individual product listing for the exact specification and current availability.