Hex Nuts

Hex nuts are internally threaded fasteners with a hexagonal external shape. They are typically used with bolts or studs to clamp two or more parts together through the mating of internal and external threads. The hexagonal shape allows torque to be applied from multiple angles using a wrench, making installation and removal convenient. Common standards include regular hex nuts (GB/T 6170, DIN 934), thin hex nuts (GB/T 6172, DIN 439), thick (high) nuts, nylon‑insert lock nuts, flange nuts, etc. Hex nuts are among the most fundamental fasteners in industrial assembly, with extremely wide applications.
Customizable options:

Materials: Carbon steel (C1008/C1022/C1045), alloy steel (SCM435/40Cr/35CrMo), stainless steel (SS304/SS316/SS304L/SS316L), brass, copper, nylon (for lock nuts), titanium alloy, etc.

Surface finishes: Electroplated zinc (blue/white, yellow, black), hot‑dip galvanizing, Dacromet, nickel plating, chrome plating, cadmium plating, black oxide, phosphating, eco‑friendly zinc‑aluminum coating, PTFE coating, etc.

Strength/thread classes: Available in grades 4, 5, 6, 8, 10, 12 or 2B/2H per GB, ANSI, DIN, etc.

Other variables: Nominal diameter (M2 – M12), width across flats, thickness, with/without flange, with/without nylon insert, slotted (for cotter pin) can be manufactured to drawings or standards.
Widely used in machinery, building structures, automotive assembly, bridge construction, rail transport, home appliances, and hardware fittings.