Stainless Steel Hex Head Stitching Screws 

For stitching overlapping profiled sheets with a maximum thickness of 1.25mm per sheet.


       

Part Number Length (MM) Diameter (MM) Drill Point
25.1SS 25 6.3 No. 1
25.1SS(A4) 25 6.3 No. 1
28.1SS 28 6.3 No. 1
33.1SSMS 33 7.5 No. 1

Stitching screws fasten two metal sheets together, each up to 1.25mm thick.

  • Stainless steel provides excellent corrosion-resistance which increases the life-span of the fixing.
  • Hex heads are standard across the industry, and require a 5/16″ socket, which we also supply.
  • The coarse thread provides excellent engagement with the sheets, maximising pull-out values.
  • The no. 1 drill point provides precision when drilling into the material and ensures the material is cleared before the thread engages.

 

 

 

For maximum fastener performance, we recommend using a tek screw driver which does not exceed 2500RPM.

 

 

 

25.1SS 25.1SS(A4) 28.1SS 33.1SSMS
A (mm) 8.71 8.71 8.71 8.64
B (mm) 25.00 25.00 28.00 33.00
C (mm) 19.50 19.50 22.50 27.00
D (mm) 6.30 6.30 6.30 7.50
E (mm) 5.50 5.50 5.50 7.00
F (mm) 4.00 4.00 4.00 4.30
G (mm) 12.60 12.60 12.60 12.25

Click to download Technical Data Sheet

25.1SS   ⭳ 25.1SS(A4)   ⭳ 28.1SS   ⭳ 33.1SSMS   ⭳
Pull Out (kN) - 2 x 0.7mm Plastisol Sheet 3.22 3.02 3.22 3.88
Shear (kN) 8.50 8.42 8.50 14.14
Tensile (kN) 7.66 8.25 7.51 10.79
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