Body: Steel, blackened, plunger hardened
Knob: Technopolymer plastic (Polyamide PA), matte black, not removable
GN 607.4 indexing plungers are designed for welded mounting, especially for use with steel square tubing.
The hub d2 is designed for positioning.
The plastic knob with molded-in indexing pin is driven on after the welding process.
Body and knob come disassembled.
Heat resistance of technopolymer plastic: 195° F (90° C).
For indexing plungers for welding, out rest position, see GN 607.5.