Aluminum Pipe Bushings | McMaster-Carr

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65 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Low-Pressure Aluminum Threaded Pipe Fittings

In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.

For technical drawings and 3-D models, click on a part number.

Bushing Straight Reducing Adapters

For Use With: Air, Oil, Water
Specifications Met: ASME B1.20.1, MIL-DTL-52618
Pressure Class: 150
Pipe Nipples and Pipe: Use Schedule 40 aluminum
Flanges: Use Class 125 aluminum

Pipe Size
(A)	(B)	Max. Pressure		Each
NPT Male × NPT Female
1/4	1/8	150 psi @ 72° F	000000000	00000
3/8	1/8	150 psi @ 72° F	000000000	0000
3/8	1/4	150 psi @ 72° F	000000000	0000
1/2	1/8	150 psi @ 72° F	000000000	0000
1/2	1/4	150 psi @ 72° F	000000000	0000
1/2	3/8	150 psi @ 72° F	000000000	0000
3/4	1/4	150 psi @ 72° F	000000000	0000
3/4	3/8	150 psi @ 72° F	000000000	0000
3/4	1/2	150 psi @ 72° F	000000000	0000
1	1/4	150 psi @ 72° F	000000000	0000
1	3/8	150 psi @ 72° F	000000000	0000
1	1/2	150 psi @ 72° F	000000000	0000
1	3/4	150 psi @ 72° F	000000000	0000
1 1/4	1/2	150 psi @ 72° F	000000000	00000
1 1/4	3/4	150 psi @ 72° F	000000000	00000
1 1/4	1	150 psi @ 72° F	000000000	00000
1 1/2	1/2	150 psi @ 72° F	000000000	00000
1 1/2	3/4	150 psi @ 72° F	000000000	00000
1 1/2	1	150 psi @ 72° F	000000000	00000
1 1/2	1 1/4	150 psi @ 72° F	000000000	00000
2	1/2	150 psi @ 72° F	000000000	00000
2	3/4	150 psi @ 72° F	000000000	00000
2	1	150 psi @ 72° F	000000000	00000
2	1 1/4	150 psi @ 72° F	000000000	00000
2	1 1/2	150 psi @ 72° F	000000000	00000
2 1/2	1	150 psi @ 72° F	000000000	00000
2 1/2	2	150 psi @ 72° F	000000000	00000
3	1 1/2	150 psi @ 72° F	000000000	00000
3	2	150 psi @ 72° F	000000000	00000
3	2 1/2	150 psi @ 72° F	000000000	00000
4	2	150 psi @ 72° F	000000000	000000
4	3	150 psi @ 72° F	000000000	000000
6	3	150 psi @ 72° F	000000000	000000
6	4	150 psi @ 72° F	000000000	000000

Miniature Medium-Pressure Aluminum Threaded Pipe Fittings

Their small size makes these miniature fittings a good choice for cramped, confined spaces. They are designed to handle medium-pressure applications. Fittings are aluminum, which is lightweight with good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Bushing Straight Reducing Adapters

For Use With: Air, Oil, Water
Specifications Met: ASME B1.20.1, ASTM B241

NPT Male × NPT Female
Pipe Size (A)	Pipe Size (B)	Thread Size (B)	Max. Pressure		Each
1/8	1/16	__	150 psi @ 72° F	00000000	00000
1/4	1/16	__	150 psi @ 72° F	00000000	00000
1/4	1/8	__	150 psi @ 72° F	00000000	00000
NPT Male × Metric Female
1/16	__	M3 × 0.5 mm	150 psi @ 72° F	00000000	0000
1/16	__	M5 × 0.8 mm	150 psi @ 72° F	00000000	0000
1/8	__	M3 × 0.5 mm	150 psi @ 72° F	00000000	0000
1/8	__	M5 × 0.8 mm	150 psi @ 72° F	00000000	0000
1/8	__	M6 × 1 mm	150 psi @ 72° F	00000000	0000
1/8	__	M8 × 1 mm	150 psi @ 72° F	00000000	0000
1/4	__	M3 × 0.5 mm	150 psi @ 72° F	00000000	00000
1/4	__	M5 × 0.8 mm	150 psi @ 72° F	00000000	00000
1/4	__	M6 × 1 mm	150 psi @ 72° F	00000000	00000
1/4	__	M8 × 1 mm	150 psi @ 72° F	00000000	00000
1/4	__	M10 × 1.25 mm	150 psi @ 72° F	00000000	00000
NPT Male × UN/UNF (SAE Straight) Female
1/16	__	10-32	150 psi @ 72° F	00000000	0000
1/8	__	10-32	150 psi @ 72° F	00000000	0000
1/8	__	1/4"-28	150 psi @ 72° F	00000000	0000
1/4	__	10-32	150 psi @ 72° F	00000000	00000
1/4	__	1/4"-28	150 psi @ 72° F	00000000	00000

Medium-Pressure Aluminum Threaded Pipe Fittings

Designed for medium-pressure applications, these fittings have better strength than our low-pressure aluminum pipe fittings. They are lightweight with good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Bushing Straight Reducing Adapters

For Use With: Air, Oil, Water
Pipe Nipples and Pipe: Use Schedule 40 aluminum

Pipe Size
(A)	(B)	Max. Pressure		Each
BSPT Male × BSPT Female
1/4	1/8	250 psi @ 72° F	0000000	000000
3/8	1/4	250 psi @ 72° F	0000000	00000
1/2	1/4	250 psi @ 72° F	0000000	00000
1/2	3/8	250 psi @ 72° F	0000000	00000
3/4	1/2	250 psi @ 72° F	0000000	00000
1	3/4	250 psi @ 72° F	0000000	00000
1 1/2	1	250 psi @ 72° F	0000000	00000
2	1 1/2	250 psi @ 72° F	0000000	00000

High-Pressure Aluminum Threaded Pipe Fittings

Also known as Pressure Class 3000 fittings, these have the highest pressure rating of all the aluminum pipe fittings we offer. They are lightweight with good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Bushing Straight Reducing Adapters

For Use With: Air, Water
Pressure Class : 3000
Specifications Met: Fed. Spec. QQ-A-200/8, ASTM B221, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 aluminum

Pipe Size
(A)	(B)	Max. Pressure		Each
NPT Male × NPT Female
1/2	1/4	3,000 psi @ 72° F	0000000	000000
3/4	1/2	3,000 psi @ 72° F	0000000	00000
1	1/2	3,000 psi @ 72° F	0000000	00000
1	3/4	3,000 psi @ 72° F	0000000	00000