Special Offers
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6.3 X 25 Hex Head Self Drilling Screw DIN 7504-K A2 Stainless Steel
In stockRRP From £11.21 -
M8 Flat Washer, Form A DIN 125-A A2 Stainless Steel
In stockRRP From £2.69 -
M8 Nylon Insert Nut DIN 985 A2 Stainless Steel
In stockRRP From £3.23 -
M10 Hexagon Full Nut DIN 934 A2 Stainless Steel
In stockRRP From £3.99
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1/2" UNC X 1.1/4" Hex Socket Countersunk ASME B18.3 A2 Stainless Steel
In stockThis 1/2" UNC x 1.1/4" socket cap screw is manufactured to ASME B18.3 in A2 stainless steel (304 grade). ASME B18.3 specifies the imperial series of socket head cap screws, driven by an internal hexagon socket,...RRP From £9.80RRP From £9.80 -
1/2" UNC X 1.1/4" Hexagon Socket Cap Screw ANSI/ASME B18.3 A2 Stainless Steel
In stockThis 1/2" UNC x 1.1/4" socket cap screw is manufactured to ANSI/ASME B18.3 in A2 stainless steel (304 grade). ANSI/ASME B18.3 specifies the imperial series of socket head cap screws, driven by an internal hexagon socket,...RRP From £11.42RRP From £11.42 -
1/2" UNC X 1" Hexagon Socket Cap Screw ANSI/ASME B18.3 A4 Stainless Steel
In stockThis 1/2" UNC x 1" socket cap screw is manufactured to ANSI/ASME B18.3 in A4 stainless steel (316 grade). ANSI/ASME B18.3 specifies the imperial series of socket head cap screws, driven by an internal hexagon socket,...RRP From £30.05RRP From £30.05 -
1/2" UNC X 1" Hex Socket Countersunk ASME B18.3 A2 Stainless Steel
In stockThis 1/2" UNC x 1" socket cap screw is manufactured to ASME B18.3 in A2 stainless steel (304 grade). ASME B18.3 specifies the imperial series of socket head cap screws, driven by an internal hexagon socket,...RRP From £9.25RRP From £9.25 -
1/2" UNC X 1.1/2" Hexagon Socket Cap Screw ANSI/ASME B18.3 A4 Stainless Steel
In stockThis 1/2" UNC x 1.1/2" socket cap screw is manufactured to ANSI/ASME B18.3 in A4 stainless steel (316 grade). ANSI/ASME B18.3 specifies the imperial series of socket head cap screws, driven by an internal hexagon socket,...RRP From £18.97RRP From £18.97 -
1/2" UNC X 1.1/2" Hexagon Socket Cap Screw ANSI/ASME B18.3 A2 Stainless Steel
Out of stockThis 1/2" UNC x 1.1/2" socket cap screw is manufactured to ANSI/ASME B18.3 in A2 stainless steel (304 grade). ANSI/ASME B18.3 specifies the imperial series of socket head cap screws, driven by an internal hexagon socket,...RRP From £12.23RRP From £12.23 -
1/2" UNC Socket Button ISO 7380 A2 Stainless Steel
In stockThis 1/2" UNC socket button head screw is manufactured to ISO 7380 in A2 stainless steel (304 grade). ISO 7380 specifies a low domed head with a hexagon socket drive, for a neat, low-profile finish where...RRP From £7.55RRP From £7.55 -
1/2" UNC X 1" Hexagon Socket Cap Screw ANSI/ASME B18.3 A2 Stainless Steel
In stockThis 1/2" UNC x 1" socket cap screw is manufactured to ANSI/ASME B18.3 in A2 stainless steel (304 grade). ANSI/ASME B18.3 specifies the imperial series of socket head cap screws, driven by an internal hexagon socket,...RRP From £10.52RRP From £10.52 -
1/2" BSW X 3/4" Hexagon Socket Cap Screw BS 2470 A2 Stainless Steel
In stockThis 1/2" BSW x 3/4" socket cap screw is manufactured in A2 stainless steel (304 grade). The internal hex socket allows high torque to be applied with a short key in tight spaces, and the compact...RRP From £3.84RRP From £3.84 -
1/2" BSW X 1.1/4" Hexagon Socket Cap Screw BS 2470 A2 Stainless Steel
Out of stockThis 1/2" BSW x 1.1/4" socket cap screw is manufactured in A2 stainless steel (304 grade). The internal hex socket allows high torque to be applied with a short key in tight spaces, and the compact...RRP From £5.48RRP From £5.48 -
0BA X 2" Hexagon Socket Cap Screw BS 2470 A2 Stainless Steel
In stockThis 0 socket cap screw is manufactured to BS 2470 in A2 stainless steel (304 grade). BS 2470 specifies a cylindrical head driven by an internal hexagon socket, making it suitable for counterbored holes and confined...RRP From £3.81RRP From £3.81 -
M8 X 25 Hex Socket Countersunk Screw ISO 10642 A4 Stainless Steel
In stockM8 x 25mm countersunk socket screw in A4 marine grade stainless steel to ISO 10642. Hex key driven with a flush countersunk head - suited to machinery panels, access covers, and cabinetwork where a clean surface...RRP From £5.39RRP From £5.39 -
M6 X 30 Hex Socket Countersunk Screw ISO 10642 A4-70 A4 Stainless Steel
In stockM6 x 30mm countersunk socket screw in A4 marine grade stainless steel to ISO 10642. Hex key driven with a flush countersunk head - suited to machinery panels, access covers, and cabinetwork where a clean surface...RRP From £2.90RRP From £2.90 -
M6 X 20 Hex Socket Countersunk Screw ISO 10642 A4 Stainless Steel
In stockM6 x 20mm countersunk socket screw in A4 marine grade stainless steel to ISO 10642. Hex key driven with a flush countersunk head - suited to machinery panels, access covers, and cabinetwork where a clean surface...RRP From £2.71RRP From £2.71 -
M5 X 25 Hex Socket Countersunk Screw ISO 10642 A4-70 A4 Stainless Steel
In stockM5 x 25mm countersunk socket screw in A4 marine grade stainless steel to ISO 10642. Hex key driven with a flush countersunk head - suited to machinery panels, access covers, and cabinetwork where a clean surface...RRP From £4.36RRP From £4.36 -
M6 X 20 Hexagon Socket Button Screw ISO 7380-1 A4 Stainless Steel
In stockM6 x 20mm button head socket screw in A4 marine grade stainless steel to ISO 7380-1. The wide, low-profile dome head distributes load across a larger bearing surface than a cap screw, ideal for furniture, signage,...RRP From £3.11RRP From £3.11 -
M6 X 16 Hexagon Socket Button Screw ISO 7380-1 A4 Stainless Steel
In stockM6 x 16mm button head socket screw in A4 marine grade stainless steel to ISO 7380-1. The wide, low-profile dome head distributes load across a larger bearing surface than a cap screw, ideal for furniture, signage,...RRP From £2.18RRP From £2.18 -
M5 X 20 Hexagon Socket Button Screw ISO 7380-1 A4 Stainless Steel
In stockM5 x 20mm button head socket screw in A4 marine grade stainless steel to ISO 7380-1. The wide, low-profile dome head distributes load across a larger bearing surface than a cap screw, ideal for furniture, signage,...RRP From £4.23RRP From £4.23 -
M5 X 16 Hexagon Socket Button Screw ISO 7380-1 A4 Stainless Steel
In stockM5 x 16mm button head socket screw in A4 marine grade stainless steel to ISO 7380-1. The wide, low-profile dome head distributes load across a larger bearing surface than a cap screw, ideal for furniture, signage,...RRP From £4.00RRP From £4.00 -
M4 X 12 Hexagon Socket Button Screw ISO 7380-1 A4 Stainless Steel
In stockM4 x 12mm button head socket screw in A4 marine grade stainless steel to ISO 7380-1. The wide, low-profile dome head distributes load across a larger bearing surface than a cap screw, ideal for furniture, signage,...RRP From £2.61RRP From £2.61 -
M8 X 40 Hexagon Socket Cap Screw ISO 4762 A4 Stainless Steel
In stockM8 x 40mm socket cap screw in A4 marine grade stainless steel to ISO 4762. Driven with a hex key, the cylindrical head suits machinery, jig frames, and precision assemblies where a spanner has no clearance....RRP From £4.74RRP From £4.74 -
M8 X 30 Hexagon Socket Cap Screw ISO 4762 A4 Stainless Steel
In stockM8 x 30mm socket cap screw in A4 marine grade stainless steel to ISO 4762. Driven with a hex key, the cylindrical head suits machinery, jig frames, and precision assemblies where a spanner has no clearance....RRP From £4.31RRP From £4.31 -
M8 X 20 Hexagon Socket Cap Screw ISO 4762 A4-80 A4 Stainless Steel
In stockM8 x 20mm socket cap screw in A4 marine grade stainless steel to ISO 4762. Driven with a hex key, the cylindrical head suits machinery, jig frames, and precision assemblies where a spanner has no clearance....RRP From £3.02RRP From £3.02 -
M6 X 30 Hexagon Socket Cap Screw ISO 4762 A4 Stainless Steel
In stockM6 x 30mm socket cap screw in A4 marine grade stainless steel to ISO 4762. Driven with a hex key, the cylindrical head suits machinery, jig frames, and precision assemblies where a spanner has no clearance....RRP From £3.52RRP From £3.52 -
M6 X 25 Hexagon Socket Cap Screw ISO 4762 A4 Stainless Steel
In stockM6 x 25mm socket cap screw in A4 marine grade stainless steel to ISO 4762. Driven with a hex key, the cylindrical head suits machinery, jig frames, and precision assemblies where a spanner has no clearance....RRP From £3.34RRP From £3.34
Stainless steel socket screws in A2 (304) and A4 (316), from M1.2 to M30, plus imperial UNC, UNF, BSW and BA sizes. All drive with a hex key (Allen key), and many A4 sizes come in both A4-70 and the stronger A4-80.
- Socket cap screws (ISO 4762) from M1.2 to M30, and low head cap screws (DIN 7984 and DIN 6912) where headroom is tight.
- Button head screws (ISO 7380-1) with a low dome profile, and flanged button head screws (ISO 7380-2) with a built-in washer face.
- Countersunk socket screws (ISO 10642) that sit flush in a countersunk hole.
- Shoulder screws (ISO 7379) in A2.
Looking for headless screws? See socket set screws, also called grub screws. For tamper-resistant fixings, see security screws.
Choose A4 for coastal, marine and salt-exposed environments.
Frequently asked questions
What socket screws does Simfix stock?
Socket cap screws (ISO 4762) from M1.2 to M30, low head cap screws (DIN 7984), button head screws (ISO 7380-1) from M2 to M16, flanged button head screws (ISO 7380-2), countersunk socket screws (ISO 10642) from M2 to M24 and shoulder screws (ISO 7379). All take a hex key, and most styles come in both A2 (304) and A4 (316).
Sizes, grades and pack quantities vary by product type. Check the individual product listing for the exact specification and current availability.