M10 x 80mm part-threaded hex bolt in A4 stainless steel, manufactured to DIN 931 at property class A4-80. The plain shank reduces stress concentration at the thread run-out, suited to shear-loaded joints and structural through-bolting. 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.
  • M10 x 80mm hex bolt marine grade 316 DIN 931 - partial thread
  • DIN 931 hex bolt M10 x 80mm A4-80 A4 marine grade stainless steel, side profile
  • Hexagon head detail - M10 x 80mm A4 stainless bolt, partial thread DIN 931
  • Simfix product label - 931A41008080PK10-SIM
  • Simfix product label - 931A41008080PK50-SIM
M10 x 80mm hex bolt marine grade 316 DIN 931 - partial thread
DIN 931 hex bolt M10 x 80mm A4-80 A4 marine grade stainless steel, side profile
Hexagon head detail - M10 x 80mm A4 stainless bolt, partial thread DIN 931
Simfix product label - 931A41008080PK10-SIM
Simfix product label - 931A41008080PK50-SIM

Simfix

Hexagon Head Bolt DIN 931 A4-80 A4 Stainless Steel (M10 X 80)

SKU 931A41008080PK10-SIM
£14.23
Pack size:
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M10 x 80mm part-threaded hex bolt in A4 stainless steel, manufactured to DIN 931 at property class A4-80. The plain shank reduces stress concentration at the thread run-out, suited to shear-loaded joints and structural through-bolting. 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.
£14.23
M10 x 80mm hex bolt marine grade 316 DIN 931 - partial thread DIN 931 hex bolt M10 x 80mm A4-80 A4 marine grade stainless steel, side profile Hexagon head detail - M10 x 80mm A4 stainless bolt, partial thread DIN 931 Simfix product label - 931A41008080PK10-SIM Simfix product label - 931A41008080PK50-SIM
M10 x 80mm hex bolt marine grade 316 DIN 931 - partial thread DIN 931 hex bolt M10 x 80mm A4-80 A4 marine grade stainless steel, side profile Hexagon head detail - M10 x 80mm A4 stainless bolt, partial thread DIN 931 Simfix product label - 931A41008080PK10-SIM Simfix product label - 931A41008080PK50-SIM

This M10 x 80mm hex bolt is manufactured to DIN 931 in A4 stainless steel (316 marine grade). DIN 931 specifies a part-threaded shank: the unthreaded plain section under the head spans the thickness of the joined parts, reducing stress concentration at the thread run-out and improving shear resistance compared with a fully threaded bolt. Property class A4-80 specifies a minimum tensile strength of 800 MPa. Pair with a matching M10 hex nut (DIN 934) or nyloc nut (DIN 985) for a complete through-bolted assembly.

Typical applications

  • Marine and coastal structures - jetties, pontoons, boat fixings
  • Swimming pool plant, water treatment facilities, and pump housings
  • Offshore and saltwater environments with prolonged wet exposure
  • Chemical plant, food processing, and washdown environments

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

Fastener styleHexagon head bolt, part threaded
StandardDIN 931
MaterialA4 stainless steel (316)
Property classA4-80
Thread sizeM10
Thread pitch1.5 mm (coarse)
Length80 mm
Head typeHex
Drive typeExternal hex (spanner)
Surface finishPlain (no plating)
HS commodity code7318157590
Recommended useMarine

RoHS and REACH compliant.

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