Connecting Nut

This long hex coupling nut is a special connecting fastener with an extended hexagonal body and full through internal threads, used to connect two bolts or extend the fixing length of threaded components.

Machined from solid 304 stainless steel bar stock, the nut features excellent rust, acid and salt fog resistance, suitable for damp, corrosive and outdoor working environments. The surface adopts wire drawing and passivation treatment, presenting a uniform matte metallic texture without glare, and effectively avoiding surface fingerprint corrosion.

The six-sided outer profile matches standard spanners and sockets for convenient torque locking during assembly. The full-length precision tapped internal threads run through the entire nut body, which can be screwed onto bolts from both ends to realize length extension and spacing positioning. The thick hexagonal wall improves torsional rigidity, preventing deformation under tightening torque.

Stainless steel long hex coupling nuts are widely applied in automation machinery frames, electrical cabinet mounting brackets, mold assembly, testing fixture spacing adjustment and outdoor stainless steel equipment connection. It is an essential fastener for assemblies requiring adjustable extension length.

We provide full customized processing service: adjustable overall length, thread specifications and hexagon size. Laser engraving brand logos can be added on the outer surface for hardware distributors and automation equipment manufacturers.

All coupling nuts pass strict factory inspection before delivery, including dimensional tolerance test, thread precision detection, flatness check and salt spray anti-corrosion test, to guarantee smooth thread matching and stable structural strength for each production batch.