Description:
Mushroom knobs made from beech-fibre biopolymer.

Material:
- Knob: Biopolymer, beech
- Internal-thread version: Bush steel 5.8
- External-thread version: Threaded pin steel 5.8

Version:
- Steel part: Trivalent blue passivated
- Knob colour: Natural beech with beech fibres or black grey RAL 7021

Advantages:
- Biopolymer manufactured entirely from renewable raw materials and is oil free.
- Conserves finite fossil resources.
- Wood fibres originate 100% from local, sustainably managed forests in Germany.

Features:
- Excellent mechanical stability, certified with a minimum 2x safety factor.
- Biopolymer is suitable for recycling, comparable to thermoplastics.
- Suitable for outdoor use; not biodegradable.
- Excellent resistance to strong acids and lyes.
- Short-term resistance to alcohol, fuel, mineral oil and grease.

Variant:
- Thread type: Internal thread
- Main colour: Black Grey RAL 7021

Dimensions:
- D: M5
- D1: 21 mm
- D2: 12 mm
- D3: 19 mm
- H: 21 mm
- H1: 10 mm
- T: 10 mm