Carbon Steel Hex Head Sheet to Heavy Section 

For fixing sheet to hot rolled purlins (4.0mm – 12.5mm steel).*


These items are UKCA and CE approved.

Part Number Length (MM) Diameter (MM) Drill Point
22.4* 22 5.5 No. 4 - max steel thickness 8.0mm
32.5 32 5.5 No. 5
38.5 38 5.5 No. 5
51.5 51 5.5 No. 5
67.5 67 5.5 No. 5
76.5 76 5.5 No. 5
100.5 100 5.5 No. 5

Heavy section screws fasten sheet metal to hot rolled purlins (4.0mm – 12.5mm steel).

  • Carbon steel is the most popular material for fixings as it is strong, weather resistant and affordable.
  • Hex heads are standard across the industry, and require a 5/16″ socket, which we also supply.
  • The fine thread provides many points of engagement with the purlin, maximising pull-out values.
  • The no.4 drill point clears 4.0mm to 8.0mm steel. The no. 5 drill point is designed to ensure a clean cut through up to 12.5mm steel, without burn-out.

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




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