Aluminum Plugs | McMaster-Carr

Designed to fit into 37° flared connections such as those found on JIC and SAE fittings, these plugs protect internally threaded connections from contaminants during fabrication and storage.

Caps

Electrical Connectors

Sensor Connectors

Often used with power supply units, proximity switches, and sensors, these connectors have a standardized pole layout so they can be quickly connected or replaced.

Mil. Spec. Connectors

These connectors are made to military standards for pole configuration.

Other Plugs

Outlet Strips

Bring these free-standing outlet strips wherever additional outlets are needed.

Outlet Boxes and Enclosures

House and protect wire connections and electronic systems and components.

Cord Grips

Fabric Grommets

Press these grommets into a hole you've already cut. They strengthen and prevent holes from fraying in tarps, covers, and curtains. They also provide a way to run rope and cable through your material.

Breather Vents

Protect against excess vacuum and pressure in cylinders, gear boxes, enclosures, manifolds, and tanks.

Sights

See inside tanks, gear cases, bearing housings, and mixers.

Slip-On Framing and Fittings

Slip these fittings over rails to construct custom railings, guard rails, storage racks, and shelving.

Robot-Ready Electric Vacuum Lifters

Connect these lifters to your robot arm to pick up and move items using suction. They're electric, so you don't need a compressed air source.

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Pipe, Tubing, Hose, and Fittings

Metal Pipe and Pipe Fittings

Clamp-On Connectors

Tubing and Tube Fittings

Air and Water Hose Fittings

Hydraulic Hose Fittings

Chemical and Petroleum Hose Fittings

Fire-Fighting Hose Fittings

Caps and Plugs

Threaded Round Plugsfor Straight-Thread Pipe

Threaded Round Plugsfor 37° Flared Tube