The lead-in bevel ensures automatic engagement of the plunger as soon as it is subjected to a unilateral transverse force. Once the bevel has been completely cleared, the plunger pin snaps in securely by spring force and can only be retracted manually by pulling on the mushroom knob.
The pin with lead-in bevel has a rotation lock which ensures that the position of pin and sleeve does not change. By using a spanner to loosen the screw, the bevelled pin can be rotated in 60° increments.
This new indexing plunger is available from norelem with fine or standard metric threads. The customer can choose between steel and stainless steel versions, whereas all grips are made from plastic. | 
