Decking screw, C1 st/stl, step head with bit


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

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The C1 decking screw with step 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 step 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).

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