Description:
Knurled heads for hexagon socket screws.

Material:
- Thermoplastic.

Version:
- Black, grey or red.
- Suitable screws: ISO 4762.
- Colour coding: Black requires no colour code
- grey = 5
- red = 6.

Variant:
- Colour black. Dimensions: Suitable cap screw: M4
- D1: 13 mm
- D2: 9.6 mm
- H: 5 mm.