Hex Weld Nuts

Hex weld nuts are six-sided nuts with small projections designed to be resistance-welded onto sheet metal or steel, providing permanent, aligned threads. Common in automotive and fabrication, they ensure the nut stays captive and positioned over the hole. We stock hex weld nuts in steel and stainless across common thread sizes.

How Hex Weld Nuts Work

The nut's weld projections concentrate the welding current at small contact points, creating a fast, strong resistance weld that fuses the nut to the workpiece in seconds. The hex body provides standard wrenching geometry if ever needed, and the welded attachment keeps the threads aligned to the hole — fast, repeatable assembly for high-volume production.

Why Weld Nuts

Welding the nut in place eliminates loose hardware, guarantees thread alignment, and gives a clean assembly where a nut couldn't be held by hand (enclosed or blind areas). The projection design makes the weld quick and consistent on automated lines.

Materials

Low carbon steel: weldable and economical, the standard. Stainless: for stainless assemblies and corrosion resistance. The nut and base metal must be weld-compatible for a sound joint.

Selecting the Right Hex Weld Nut

Match the thread to your bolt, the nut material to the base metal, and provide the correct clearance hole and clean bare metal at the weld. Set proper resistance-welding parameters for the projection design. Hex weld nuts suit high-volume, automated assembly where permanent aligned threads are needed.

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