Weld these metric nuts to flat and uneven uncoated steel surfaces for a strong permanent hold.

A smooth base provides more contact with the mating surface than weld nuts with projections.

Use these metric nuts in channels and tight spaces where round-base weld nuts won't fit.

A smooth base provides more contact with the mating surface than weld nuts with projections.

Projections on the base concentrate the weld and provide room for heat to dissipate.

Threads float inside the retainer of these metric nuts so you can install a bolt at a slight angle to align with off-center parts.

These nuts have three mounting holes to accept screws and rivets for use with thin materials.