Tube Caps | McMaster-Carr

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UN/UNF (SAE Straight)

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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Export Control Classification Number (ECCN)

2A992

2B999

EAR99

DFARS Specialty Metals

7,666 Products

Building and Machinery Hardware

Protective Plugs

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

1,009 products

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

1,069 products

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

113 products

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

10 products

Fluid Handling

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

675 products

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

3,510 products

Pipe Stub Ends

Connect a pipe flange to a pipe without needing to weld it in place

154 products

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

280 products

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

95 products

Electrical Power, Networking, and Controlling

Heat-Shrink Tubing End Caps

Seal moisture out of crimped electrical connections

22 products

Cold-Shrink Tubing End Caps

Seal crimped electrical connections without heat or tools to protect against moisture

4 products

DIN Rail Caps

Guard the edges of DIN rail from damage and create a finished look

2 products

Capacitor Boots

Shield capacitors and wire connections to extend their service life and reduce accidental shocks

3 products

Electrical Insulating Wire Caps

Cover live wire ends to protect against shock from accidental contact

3 products

Terminal Covers

Block out dirt and corrosion to protect battery terminals

20 products

Fastening and Joining

Quick-Release Pin Receptacles

Secure quick-release pins when you don’t have a through hole

36 products

Quick-Release Pin Retaining Caps

Hold quick-release pins in holes that are oversized or out of round

23 products

Cartridge Sealing Caps

Slip over the tips of adhesive and sealant cartridges to keep contents from hardening

1 product

Material Handling

Conveyor Guide Mounting Rod Caps

Cover the ends of conveyor guide mounting rods for a finished look

7 products

Valve Stem Caps

Keep dust and debris out of tire valves

2 products

Facility and Grounds Maintenance

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

4 products

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

3 products

Fabricating and Machining

Fixture Plate Plugs

Keep chips and shavings from clogging or damaging unused holes on fixture plates in milling machines

8 products

Containers, Storage, and Furniture

Dust Covers

Stretch over drums, pails, and other objects to keep out dust and debris

6 products

Heating, Ventilation, and Air Conditioning

Air Conditioner Service Valve Caps

Seal off AC service valves to prevent refrigerant from leaking out

2 products

Communication

Tamper-Evident Seals

Secure hasps, latches, and other connections to visibly indicate tampering

2 products