Window sill screw (A4 stainless steel) for wood stud

  • Function: Sharp tip and threads adapted for anchoring in wood. The screw also has a cutting drill tip to prevent cracks forming in the wood. The screw meets the requirements of the AMA Hus 21 JTC.521 for the installation of window sills.
  • Drive type: Square 1.
  • Material: Stainless steel (A4).
  • Installation instruction: If the sill is pre-drilled, make a hole with an awl or pre-drill with a 3 mm drill.
Unit Guide
D Diameter
D1 Outer diameter
G Thread length
H Head diameter
L Length
M Thickness
MB Mother box
Drill cap. mm Drill capacity mm
Max comp. thick. app. mm Max component thickness application mm
Min. drill depth mm Minimum drill depth mm
Screw dim. mm Screw dimension mm
Surface treat. Surface treatment
D L G Colour Art.no Quantity Pack. MB
3.5 25 25 Black RAL 9011 BS3525 17000 Bulk pack
3.5 25 25 Black RAL 9011 S3525 250 Packaging 16
3.5 25 25 Black RAL 9011 S352500 100 Packaging 40
3.5 25 25 Black RAL 9011 SBS3525 15 Pack 10
3.5 25 25 Uncoloured B3525 17000 Bulk pack
3.5 25 25 Uncoloured 3525 250 Packaging 16
3.5 25 25 Uncoloured 352500 100 Packaging 40
3.5 25 25 Uncoloured SB3525 20 Pack 10
3.5 25 25 White RAL 9010 BV3525 17000 Bulk pack
3.5 25 25 White RAL 9010 V3525 250 Packaging 16
3.5 25 25 White RAL 9010 V352500 100 Packaging 40
3.5 25 25 White RAL 9010 SBV3525 15 Pack 10
NOTE: 1 x bit included in each package. Packs are only sold in multiples of ten.
  • Information material

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