Plastic screw sleeve used in soft materials such as balsa, EPP, polystyrene, styrodur etc.
Dimensions:
- overall height: 15.5 mm.
- inner diameter: 4.2 mm.
- outer diameter of the flange: 12.1 mm.
- diameter of the groove under the screw head: 8.1 mm.
- recess depth: 3 mm.