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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M6 X 25 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
In stockThis M6 x 25mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £3.23RRP From £3.23 -
M6 X 25 Six Lobe Button ISO 7380-1 A2 Stainless Steel
In stockThis M6 x 25mm socket button head screw is manufactured to ISO 7380-1 in A2 stainless steel (304 grade). ISO 7380-1 specifies a low domed head driven by an internal hexagon socket, giving a rounded, finished...RRP From £5.15RRP From £5.15 -
M6 X 25 Six Lobe Button Flange ISO 7380-2 A2 Stainless Steel
In stockThis M6 x 25mm socket button head flange screw is manufactured to ISO 7380-2 in A2 stainless steel (304 grade). ISO 7380-2 specifies a low domed head with an integral flange, driven by an internal hexagon...RRP From £9.54RRP From £9.54 -
M6 X 20 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
Out of stockThis M6 x 20mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £4.45RRP From £4.45 -
M6 X 20 Six Lobe Button ISO 7380-1 A2 Stainless Steel
In stockThis M6 x 20mm socket button head screw is manufactured to ISO 7380-1 in A2 stainless steel (304 grade). ISO 7380-1 specifies a low domed head driven by an internal hexagon socket, giving a rounded, finished...RRP From £5.31RRP From £5.31 -
M6 X 18 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
In stockThis M6 x 18mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £4.20RRP From £4.20 -
M6 X 16 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
In stockThis M6 x 16mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £3.89RRP From £3.89 -
M6 X 16 Six Lobe Button ISO 7380-1 A2 Stainless Steel
In stockThis M6 x 16mm socket button head screw is manufactured to ISO 7380-1 in A2 stainless steel (304 grade). ISO 7380-1 specifies a low domed head driven by an internal hexagon socket, giving a rounded, finished...RRP From £5.02RRP From £5.02 -
M6 X 16 Six Lobe Button Flange ISO 7380-2 A2 Stainless Steel
In stockThis M6 x 16mm socket button head flange screw is manufactured to ISO 7380-2 in A2 stainless steel (304 grade). ISO 7380-2 specifies a low domed head with an integral flange, driven by an internal hexagon...RRP From £8.21RRP From £8.21 -
M6 X 14 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
Out of stockThis M6 x 14mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £5.00RRP From £5.00 -
M6 X 120 Six Lobe Button ISO 7380-1 A4 Stainless Steel
In stockThis M6 x 120mm six Lobe Button is manufactured to ISO 7380-1 in A4 stainless steel (316 grade).Typical applications Boat fittings, rigging, and deck hardware Dock, pontoon, and coastal installations Exposed structures in salt-laden or chloride-rich...RRP From £24.78RRP From £24.78 -
M6 X 12 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
In stockThis M6 x 12mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £3.89RRP From £3.89 -
M6 X 12 Six Lobe Button ISO 7380-1 A4 Stainless Steel
In stockThis M6 x 12mm socket button head screw is manufactured to ISO 7380-1 in A4 stainless steel (316 grade). ISO 7380-1 specifies a low domed head driven by an internal hexagon socket, giving a rounded, finished...RRP From £18.90RRP From £18.90 -
M6 X 12 Six Lobe Button ISO 7380-1 A2 Stainless Steel
In stockThis M6 x 12mm socket button head screw is manufactured to ISO 7380-1 in A2 stainless steel (304 grade). ISO 7380-1 specifies a low domed head driven by an internal hexagon socket, giving a rounded, finished...RRP From £3.87RRP From £3.87 -
M6 X 12 Six Lobe Button Flange ISO 7380-2 A2 Stainless Steel
Out of stockThis M6 x 12mm socket button head flange screw is manufactured to ISO 7380-2 in A2 stainless steel (304 grade). ISO 7380-2 specifies a low domed head with an integral flange, driven by an internal hexagon...RRP From £7.11RRP From £7.11 -
M6 X 10 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
In stockThis M6 x 10mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £4.11RRP From £4.11 -
M6 X 10 Six Lobe Button ISO 7380-1 A2 Stainless Steel
In stockThis M6 x 10mm socket button head screw is manufactured to ISO 7380-1 in A2 stainless steel (304 grade). ISO 7380-1 specifies a low domed head driven by an internal hexagon socket, giving a rounded, finished...RRP From £4.12RRP From £4.12 -
M5 X 8 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
In stockThis M5 x 8mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £3.68RRP From £3.68 -
M5 X 8 Six Lobe Button ISO 7380-1 A4 Stainless Steel
In stockThis M5 x 8mm socket button head screw is manufactured to ISO 7380-1 in A4 stainless steel (316 grade). ISO 7380-1 specifies a low domed head driven by an internal hexagon socket, giving a rounded, finished...RRP From £13.70RRP From £13.70 -
M5 X 8 Six Lobe Button ISO 7380-1 A2 Stainless Steel
In stockThis M5 x 8mm socket button head screw is manufactured to ISO 7380-1 in A2 stainless steel (304 grade). ISO 7380-1 specifies a low domed head driven by an internal hexagon socket, giving a rounded, finished...RRP From £5.80RRP From £5.80 -
M5 X 70 Six Lobe Button Flange ISO 7380-2 A2 Stainless Steel
In stockThis M5 x 70mm socket button head flange screw is manufactured to ISO 7380-2 in A2 stainless steel (304 grade). ISO 7380-2 specifies a low domed head with an integral flange, driven by an internal hexagon...RRP From £7.74RRP From £7.74 -
M5 X 60 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
Out of stockThis M5 x 60mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £7.10RRP From £7.10 -
M5 X 6 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
Out of stockThis M5 x 6mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £3.35RRP From £3.35 -
M5 X 6 Six Lobe Button ISO 7380-1 A2 Stainless Steel
In stockThis M5 x 6mm socket button head screw is manufactured to ISO 7380-1 in A2 stainless steel (304 grade). ISO 7380-1 specifies a low domed head driven by an internal hexagon socket, giving a rounded, finished...RRP From £5.70RRP From £5.70 -
M5 X 55 Six Lobe Cap Screw ISO 14579 A2 Stainless Steel
Out of stockThis M5 x 55mm six lobe socket cap screw is manufactured to ISO 14579 in A2 stainless steel (304 grade). ISO 14579 specifies a cylindrical head driven by a six lobe internal recess, giving greater torque...RRP From £6.50RRP From £6.50
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.