Steel Square Nuts | McMaster-Carr

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287 Products

Fastening and Joining

Square Nuts

Flat sides won’t spin in channels and square holes

Tamper-Resistant Nuts

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

Weld Nuts

Weld to metal surfaces to add permanent threads

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

Clip-On Nuts

Slide onto the edge of thin panels to create a fastening point

Building and Machinery Hardware

Strut Channel Nuts

Strut Channel Nuts

Fasten on threaded rod to connect components to strut channel

Strut Channel Washers

Strut Channel Washers

Pair with hex nuts to connect threaded rod to strut channel

Power Transmission

Lead Screws and Nuts

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)