Material: Body zinc plated, blue passivated. Plunger pin
stainless steel 1.4305. Spring stainless steel 1.4310. Knob (type B/BK)
plastic (Polyamide PA) black, matt finish, not removable.

Indexing plungers 717 are reasonably priced, with small dimensions, for
applications where high precision indexing is not required. Indexing
Plungers with rest position are used where the pin has to remain in
retracted position. To achieve this, the knob is rotated by 90 degrees
after being retracted. A notched catch stops the locked-in knob from
returning to its initial position accidentally or due to vibration.

Type C: with rest position, with knob, without counter nut.

Type CK: with rest position,
with knob ring, with counter nut.