Type B - without lock nut, with knob
Type BK - with lock nut, with lifting knob
Type C - with rest position, without lock nut
Type CK - with rest position, with lock nut
GN817.2 Indexing Plunger, Long Plastic Knob, Stainless Steel
These stainless steel indexing plungers correspond to GN817, they only differ by a longer knob.
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.
Stainless Steel NI AISI 303
Plunger - chemically nickel plated
Knob - Plastic, Technopolymer (Polyamide PA), black, matt, not removable
Also available in steel.