Threaded body: Steel, black oxide finish
Plunger pin: Steel, hardened and ground
Knob: Matte black technopolymer plastic (Polyamide PA), not removable
Lock nut: Steel, black oxide finish, DIN 439 / ISO
|| GN 817 indexing plungers offer
the following advantages:
--Two retracting strokes l1 per plunger diameter
--Defined thread length by an undercut at the end of the thread
Type G with threaded spindle is for applications where a specific
knob or special receptacle is required for operation.
Maximum heat resistance of nylon plastic hand knob: 110°C (230°F).