Fastener Caps | McMaster-Carr

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602 Products

Building and Machinery Hardware

Protective Caps

Protective Caps

Cover holes at the end of pipe, conduit, and fittings to keep out debris

Protective Plugs

Protective Plugs

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

Fastening and Joining

Cap Nuts

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

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

Socket Head Screws

Socket Head Screws

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

Electrical

Terminal Covers

Terminal Covers

Block out dirt and corrosion to protect battery terminals

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