3.5mm x 40mm Pozidriv countersunk wood screw in A2 stainless steel to DIN 7997. The sharp gimlet point drives cleanly into softwood and hardwood, with the countersunk head sitting flush once fully driven for a neat, fillable finish. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.
  • 3.5mm x 40mm pozi countersunk wood screw A2 stainless DIN 7997
  • DIN 7997 countersunk wood screw 3.5mm x 40mm A2 stainless steel, side profile
  • Pozi CSK head detail - 3.5mm x 40mm A2 stainless wood screw DIN 7997
  • Simfix product label - 7997A235040PK100-SIM
  • Simfix product label - 7997A235040PK500-SIM
3.5mm x 40mm pozi countersunk wood screw A2 stainless DIN 7997
DIN 7997 countersunk wood screw 3.5mm x 40mm A2 stainless steel, side profile
Pozi CSK head detail - 3.5mm x 40mm A2 stainless wood screw DIN 7997
Simfix product label - 7997A235040PK100-SIM
Simfix product label - 7997A235040PK500-SIM

Simfix

Poz Csk Wood Screw DIN 7997 A2 Stainless Steel (3.5 X 40)

SKU 7997A235040PK100-SIM
£8.27
Pack size:
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3.5mm x 40mm Pozidriv countersunk wood screw in A2 stainless steel to DIN 7997. The sharp gimlet point drives cleanly into softwood and hardwood, with the countersunk head sitting flush once fully driven for a neat, fillable finish. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.
£8.27
3.5mm x 40mm pozi countersunk wood screw A2 stainless DIN 7997 DIN 7997 countersunk wood screw 3.5mm x 40mm A2 stainless steel, side profile Pozi CSK head detail - 3.5mm x 40mm A2 stainless wood screw DIN 7997 Simfix product label - 7997A235040PK100-SIM Simfix product label - 7997A235040PK500-SIM
3.5mm x 40mm pozi countersunk wood screw A2 stainless DIN 7997 DIN 7997 countersunk wood screw 3.5mm x 40mm A2 stainless steel, side profile Pozi CSK head detail - 3.5mm x 40mm A2 stainless wood screw DIN 7997 Simfix product label - 7997A235040PK100-SIM Simfix product label - 7997A235040PK500-SIM

This 3.5mm x 40mm Pozidriv countersunk wood screw is manufactured to DIN 7997 in A2 stainless steel (304 grade). DIN 7997 specifies a cross-recessed countersunk head wood screw with a plain shank and tapered thread. The sharp gimlet point is self-starting in softwood; in dense hardwood, a pilot hole the diameter of the plain shank prevents splitting and makes driving easier at larger diameters. The countersunk head sits flush once fully driven, leaving the surface ready for filling, capping, or painting.

Typical applications

  • Garden decking, pergolas, and outdoor timber structures
  • Fencing, gate posts, and agricultural timber work
  • Softwood joinery, window boards, and door linings
  • Hardwood trim and furniture where a pre-drilled clearance hole is used

Available in packs of 100 to 500, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns.

Fastener styleCountersunk woodscrew with Pozi drive
StandardDIN 7997
MaterialA2 stainless steel (304)
Property classA2-50/70
Thread sizeM3.5
Length40 mm
Head typeCountersunk
Drive typePozi (PZ)
Surface finishPlain (no plating)
HS commodity code7318121090
Recommended useOutdoor

RoHS and REACH compliant.

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