4.2mm x 25mm Pozidriv pan head self-tapping screw in A4 marine grade stainless steel to DIN 7981-C. Thread-forming point cuts its own thread into light sheet metal, UPVC, and thin-gauge sections without pre-tapping. 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.
  • 4.2mm x 25mm pozi pan head self-tapping screw marine grade 316 DIN 7981
  • DIN 7981 pan self-tapping screw 4.2mm x 25mm A4 marine grade stainless steel, side profile
  • Pozi pan head tapping detail - 4.2mm x 25mm A4 stainless self-tapping screw DIN 7981
  • Simfix product label - 7981CA442025ZPK25-SIM
  • Simfix product label - 7981CA442025ZPK200-SIM
4.2mm x 25mm pozi pan head self-tapping screw marine grade 316 DIN 7981
DIN 7981 pan self-tapping screw 4.2mm x 25mm A4 marine grade stainless steel, side profile
Pozi pan head tapping detail - 4.2mm x 25mm A4 stainless self-tapping screw DIN 7981
Simfix product label - 7981CA442025ZPK25-SIM
Simfix product label - 7981CA442025ZPK200-SIM

Simfix

Poz Pan Tapping Screw DIN 7981-C A4 Stainless Steel (4.2 X 25)

SKU 7981CA442025ZPK25-SIM
£9.62
Pack size:
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4.2mm x 25mm Pozidriv pan head self-tapping screw in A4 marine grade stainless steel to DIN 7981-C. Thread-forming point cuts its own thread into light sheet metal, UPVC, and thin-gauge sections without pre-tapping. 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.
£9.62
4.2mm x 25mm pozi pan head self-tapping screw marine grade 316 DIN 7981 DIN 7981 pan self-tapping screw 4.2mm x 25mm A4 marine grade stainless steel, side profile Pozi pan head tapping detail - 4.2mm x 25mm A4 stainless self-tapping screw DIN 7981 Simfix product label - 7981CA442025ZPK25-SIM Simfix product label - 7981CA442025ZPK200-SIM
4.2mm x 25mm pozi pan head self-tapping screw marine grade 316 DIN 7981 DIN 7981 pan self-tapping screw 4.2mm x 25mm A4 marine grade stainless steel, side profile Pozi pan head tapping detail - 4.2mm x 25mm A4 stainless self-tapping screw DIN 7981 Simfix product label - 7981CA442025ZPK25-SIM Simfix product label - 7981CA442025ZPK200-SIM

This 4.2mm x 25mm Pozidriv pan head self-tapping screw is manufactured to DIN 7981-C in A4 stainless steel (316 marine grade). DIN 7981-C specifies a Type-C thread form with a sharp, thread-cutting tip that forms its own mating thread into the parent material on first drive. This eliminates pre-tapping in light sheet metal, UPVC, and similar thin-gauge materials. The pan head sits above the surface, providing a visible clamping face - practical for sheet metal work, cladding panels, and electrical enclosures where a flush finish is not required.

Typical applications

  • Marine and coastal installations with saltwater and chloride exposure
  • Swimming pool surrounds, water treatment plant, and pump assemblies
  • Offshore and waterside structures with prolonged wet exposure
  • Chemical plant, food processing, and washdown environments

Available in packs of 25 to 200, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns.

Fastener stylePan head self-tapping screw with Pozi drive
StandardDIN 7981-C
MaterialA4 stainless steel (316)
Property classA4
Thread sizeM4.2
Length25 mm
Head typePan
Drive typePozi (PZ)
Surface finishPlain (no plating)
HS commodity code7318141090
Recommended useMarine

RoHS and REACH compliant.

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