H90 H80 H70 H62 H59 Brass Bronze Red Copper Combination Of Hex Meatl Screw With Nut And Washer

This combination fastener is made from copper alloys: brass (grades H90, H80, H70, H62, H59), bronze or red copper. The bolt is a hex head screw to DIN933 (full thread) or DIN931 (partial thread), supplied together with a DIN934 hex nut and copper flat/spring washers. Copper alloys offer excellent electrical and thermal conductivity, non‑magnetic properties, low friction and are non‑sparking. The combination is ideal for electrical grounding, explosion‑proof equipment, marine environments and decorative applications. The colour ranges from reddish (high copper content) to golden yellow.

• Electrical grounding busbars and transformer terminals – low contact resistance.
• Explosion‑proof electrical equipment – non‑sparking in mines or petrochemical plants.
• Marine and desalination piping – bronze resists seawater galvanic corrosion.
• Musical instruments and luxury furniture – vintage appearance.
• RF shielding and MRI room grounding – non‑magnetic.

• High electrical/thermal conductivity – up to 90% IACS for pure copper.
• Non‑sparking – safe for explosive atmospheres.
• Corrosion resistant– copper ions inhibit bacteria.
• Wide alloy selection – H90 soft and formable, H59 hard and wear‑resistant.
• Complete combination kit – bolt, nut, and washers from one source.