Decking screw, C1 st/stl, stepped c/s hd with bit


  • Head type: Socket head
  • Material: Stainless steel
  • C1
  • Nominal diameter: 5 mm
  • Internal drive: TX25
  • Thread design: Partial thread
  • Number of bits: 1 PCS
  • Head height max.: 5.5 mm
  • Max. thread diameter (d thr): 5.3 mm
  • Head diameter max.: 8.75 mm
  • Friction parts diameter: 4.1 mm
  • Drive type: Internal hexalobular

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The C1 decking screw with stepped countersunk head is a cost-effective solution with secure hold for processing soft and medium-strength wood outdoors.
The user is responsible for design considerations.

The appropriate substructure must be selected depending on the decking panels/boards to be installed.
Recommended laying distance of the substructure 50-60 cm = approx. 35 screws per m²
Each support point of the planks on the substructure must be fixed with two screws
The recommended gap between the joints of the planks is 4-7 mm, depending on the type of wood
Important application instruction:
Pre-drilling of the wood may be necessary depending on the density and moisture level of the wood. It is recommended to screw in the C1 decking screw with cheese head/countersunk head at a low speed. Preliminary tests are generally required. In order to obtain a perfect processing result, the wood to be laid should have a moisture content of 16% +/- 2%.
When using C1 stainless steel, certain external influences such as weather or chemical influences can cause slight discolouration (especially in the case of a very bright wood look).

  • Head type: Socket head
  • Material: Stainless steel
  • C1
  • Nominal diameter: 5 mm
  • Internal drive: TX25
  • Thread design: Partial thread
  • Number of bits: 1 PCS
  • Head height max.: 5.5 mm
  • Max. thread diameter (d thr): 5.3 mm
  • Head diameter max.: 8.75 mm
  • Friction parts diameter: 4.1 mm
  • Drive type: Internal hexalobular