Body: Stainless steel, European Standard No. 1.4305 (American Standard Series 303)
Plunger pin: Stainless steel, European Standard No. 1.4305 (American Standard Series 303), chemically nickel-plated
T-handle: Technolpolymer plastic (Polyamid PA), not
Lock nut: Stainless steel, European Standard No. 1.4301 (American Standard Series 304), ISO
8675 (DIN 439)
|| GN 817.4 indexing plungers are similar to GN 817, but with a T-handle instead of a round head knob.
This shape allows better visual orientation of the indexing position of the Type C version, and is advantageous when greater unlocking forces occur.
Type C with rest position is used in applications where the plunger must not protrude continually. In that case the knob is retracted and afterwards turned by 90°. A notch keeps the plunger in this position.
For steel version see GN 817.4.