steel strength class 8.8 through hardened, galvanized, colorless passivated (code ZI), use for sheet metal hardness up to HRB 80.
Material type BFHS: Stainless steel 18/8 (AISI 300), use for sheet hardness up to HRB 70.
Material type BFHA: aluminium, use for sheet metal hardness up to HRB 50.
We - Stud Welding Technology bsk + BTV GmbH - can also supply you with threaded bolts, pins, internally threaded sockets and grounding flat plugs from our extensive warehouse at short notice and are also happy to manufacture special bolts according to your special requirements in high quality.