Hex Nut

This hex nut is the most widely used standard fastener with six flat outer sides, designed to cooperate with matching hex bolts for reliable clamping and fixing of metal and non-metal workpieces.

It is forged from high-strength carbon steel, treated with black oxide finish to form a matte black protective layer that provides basic anti-rust performance in dry indoor environments. Strength grade marks are clearly printed on the outer surface for quick identification during assembly and quality inspection.

The symmetrical hexagonal outer profile fits all standard spanners and socket wrenches, enabling stable torque control during tightening. Precisely rolled internal threads deliver smooth matching with standard metric bolts, maintaining consistent clamping force after repeated disassembly and fastening cycles. The uniform wall thickness ensures balanced stress distribution to avoid deformation under medium and heavy load.

Hex nuts are universally applied in mechanical manufacturing, engineering construction, automobile assembly, pipeline connection and equipment frame fixing. It serves as the basic matching fastener for most bolted connection structures.

We provide full customized solutions: adjustable thread pitch, nut thickness, surface treatment and engraved brand logos for machinery factories, construction hardware distributors and auto parts manufacturers.

All finished hex nuts undergo strict quality testing before shipment, including dimensional measurement, thread precision inspection, hardness test and surface coating appearance check, to ensure stable thread fit and reliable mechanical strength for every production batch.