External Square Fasteners | McMaster-Carr

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551 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

Square Head Screws

Square Head Screws

Turn the large flat sides with a wrench into square holes that stop further rotation

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

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