Fastener Caps | McMaster-Carr

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602 Products

Protective Caps

Hinged Caps for Screws

Hinged Caps for Screws

Flip open for frequent access to screws without misplacing the cap

Caps for Hex Nuts

Caps for Hex Nuts

Seal out moisture and dirt to prevent corrosion and buildup on threads

Snap-On Caps for Screws

Snap-On Caps for Screws

Conceal screw heads for a finished look that protects people and parts from getting snagged

Caps for Socket Head Screws

Caps for Socket Head Screws

Keep debris from clogging or damaging hex drives

Other Products

Cap Nuts

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

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

Retaining Rings

Retaining Rings

Hold components on a shaft

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

Terminal Covers

Terminal Covers

Block out dirt and corrosion to protect battery terminals

Socket Head Screws

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

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