Type B - without rest position, without locknut.
Type BK - without rest position, with locknut.
Type C - with rest position, without lock nut.
Type CK - with rest position, with lock nut
GN817 Indexing Plunger, Steel, Red Knob
These indexing plungers, GN 817, with rest position (Type C/CK) are used for applications where the plunger has to stay in its retracted position. To achieve this, the knob is rotated by 90 degrees after being retracted. A notch keeps the plunger in this position.
Steel ST, blackened
Plunger pin - hardened
Knob - Plastic, Technopolymer (Polyamide PA), red RT RAL 3000, not removable.