M4 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, and decorative or thin-panel fixings. A4 (316) marine grade gives outstanding resistance to saltwater and chloride corrosion - the right choice for coastal, marine, and pool environments. Free next-day UK delivery on orders over £50.
  • M4 x 12mm socket button screw marine grade 316 ISO 7380
  • ISO 7380 socket button screw M4 x 12mm A4 marine grade stainless steel, side profile
  • Low-profile button head detail - M4 x 12mm A4 stainless button screw ISO 7380
  • Simfix product label - 7380A404012PK10-SIM
  • Simfix product label - 7380A404012PK50-SIM
M4 x 12mm socket button screw marine grade 316 ISO 7380
ISO 7380 socket button screw M4 x 12mm A4 marine grade stainless steel, side profile
Low-profile button head detail - M4 x 12mm A4 stainless button screw ISO 7380
Simfix product label - 7380A404012PK10-SIM
Simfix product label - 7380A404012PK50-SIM

Simfix

Hexagon Socket Button Screw ISO 7380-1 A4 Stainless Steel (M4 X 12)

SKU 7380A404012PK10-SIM
£3.68
Pack size:
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M4 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, and decorative or thin-panel fixings. A4 (316) marine grade gives outstanding resistance to saltwater and chloride corrosion - the right choice for coastal, marine, and pool environments. Free next-day UK delivery on orders over £50.
£3.68
M4 x 12mm socket button screw marine grade 316 ISO 7380 ISO 7380 socket button screw M4 x 12mm A4 marine grade stainless steel, side profile Low-profile button head detail - M4 x 12mm A4 stainless button screw ISO 7380 Simfix product label - 7380A404012PK10-SIM Simfix product label - 7380A404012PK50-SIM
M4 x 12mm socket button screw marine grade 316 ISO 7380 ISO 7380 socket button screw M4 x 12mm A4 marine grade stainless steel, side profile Low-profile button head detail - M4 x 12mm A4 stainless button screw ISO 7380 Simfix product label - 7380A404012PK10-SIM Simfix product label - 7380A404012PK50-SIM

This M4 x 12mm button head socket screw is manufactured to ISO 7380-1 in A4 stainless steel (316 marine grade). ISO 7380-1 specifies a low-profile dome head with an internal hex socket. The wide, shallow head distributes load over a larger bearing area than a standard cap screw of the same thread size, reducing the risk of pull-through in thinner materials. The low profile and smooth dome surface make this the preferred choice for furniture, panel covers, and decorative or visible fixings where a cap screw head would be too prominent.

Typical applications

  • Marine deck hardware, boat fittings, and coastal fabrication
  • Swimming pool surrounds, leisure facilities, and waterside furniture
  • Offshore and saltwater environments needing a low-profile fastener
  • Chemical plant and food processing equipment with hygiene requirements

Available in packs of 10 to 50, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns.

Fastener styleButton head screw with hex socket drive
StandardISO 7380-1
MaterialA4 stainless steel (316)
Property classA4
Thread sizeM4
Thread pitch0.7 mm (coarse)
Length12 mm
Head typeButton head socket
Drive typeHex socket (Allen)
Surface finishPlain (no plating)
HS commodity code7318156290
Recommended useMarine

RoHS and REACH compliant.

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