Material: Steel. Sleeve 1.0403 weldable. Indexing pin grade 5.8. Key ring 1.4310, bright. Version: Indexing pin hardened, ground, black oxidized. Note: Indexing plungers are used to prevent any change in locking position due to lateral forces. A new locking position can only be set after the pin has been disengaged. The key ring is also suitable for actuating the indexing plungers e.g. automatically (program-controlled) with the aid of a pneumatic cylinder or remote controlled with Bowden cables. To weld the indexing plungers we recommend inert gas shielded welding with TIG welding equipment.