McMaster-Carr

	Material Material

Aluminum

Plastic

	System of Measurement System of Measurement

Inch

Metric

	For OD For OD

	Type Type


Cap	Plug

Flange	Adapter

	Pipe Size Pipe Size

1 1/2
2
2 1/2
3
4
6
8

	Thread Type Thread Type

	Thread Size Thread Size

	Cap Type Cap Type


Push On	Screw On

	For Pipe Size For Pipe Size

	For Use With For Use With

	Inside Height Inside Height

	Shape Shape


Cap/Plug	Cap

Straight

	Connection Style Connection Style

	For Connection Type For Connection Type

Unthreaded Pipe

Straight-Thread Pipe

	Drive Style Drive Style


External Square	Hex

External Hex	Square

	Color Color

	Black
	Gray

	Gender Gender

Female

Male

	Connection Type Connection Type

Pipe

Hose

Press Fit

	Coupling Size Coupling Size

	Maximum Pressure Maximum Pressure

	Cam-and-Groove Component Cam-and-Groove Component


Socket	Plug

	Finish Finish

Anodized

Fiber Coated

Rubber Coated

	Height Height

302 Products

Caps

Push-On Caps

Threaded Caps

Protect externally threaded components from contaminants during fabrication and storage.

Pipe, Tubing, Hose, and Fittings

Pipe and Pipe Fittings

Connect pipe to pipe in low- to high-pressure applications. Pipe and fittings are measured by pipe size, which is an industry designation, not an actual measured size like hose, tubing, and duct. Pipe is typically rigid.

Hose and Hose Fittings

Other Aluminum Caps

Slip-On Framing and Fittings

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

Roof Vent Caps

Gas and Chimney Vents

Exhaust gas fumes and hot air from boilers, furnaces, and stoves.

Diesel Fuel Tank Caps

Often used with trailers, compressors, and other fuel tanks, these caps meet Department of Transportation requirements.

Breather Vents

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

Bench Vise Jaw Liners

Attach to vise jaws to protect workpieces from marring and hold round and uneven workpieces.

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.