Aluminum Square-Head Plugs

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48 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

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.

Square-Drive Plugs

NPT Male

	Construction	Pressure Class	Material	Max. Pressure @ Temp.		Each
NPT Male



	3/8	Solid	150	6061 Aluminum	150 psi @ 72° F	44705K334	000000


	1/2	Solid	150	6061 Aluminum	150 psi @ 72° F	44705K335	00000
	3/4	Solid	150	356 Aluminum	150 psi @ 72° F	44705K336	00000
	1	Solid	150	356 Aluminum	150 psi @ 72° F	44705K337	00000
	1 1/4	Solid	150	356 Aluminum	150 psi @ 72° F	44705K338	00000
	1 1/2	Solid	150	356 Aluminum	150 psi @ 72° F	44705K339	00000
	2	Solid	150	356 Aluminum	150 psi @ 72° F	44705K341	00000
	2 1/2	Solid	150	356 Aluminum	150 psi @ 72° F	44705K342	00000
	3	Solid	150	356 Aluminum	150 psi @ 72° F	44705K343	00000
	4	Solid	150	356 Aluminum	150 psi @ 72° F	44705K354	000000

External-Square-Drive Plugs

	Construction	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.		Each
NPT Male
Male


	1/8	Solid	150	Square	6061 Aluminum	150 psi @ 72° F	44705K382	00000


	1/4	Solid	150	Square	6061 Aluminum	150 psi @ 72° F	44705K383	0000
	3/8	Solid	150	Square	6061 Aluminum	150 psi @ 72° F	44705K384	0000
	1/2	Solid	150	Square	6061 Aluminum	150 psi @ 72° F	44705K385	0000
	3/4	Solid	150	Square	6061 Aluminum	150 psi @ 72° F	44705K386	0000
	1	Solid	150	Square	356 Aluminum	150 psi @ 72° F	44705K387	00000
	1 1/4	Solid	150	Square	356 Aluminum	150 psi @ 72° F	44705K388	00000
	1 1/2	Solid	150	Square	356 Aluminum	150 psi @ 72° F	44705K389	00000
	2	Solid	150	Square	356 Aluminum	150 psi @ 72° F	44705K411	00000
	2 1/2	Solid	150	Square	356 Aluminum	150 psi @ 72° F	44705K237	00000
	3	Solid	150	Square	356 Aluminum	150 psi @ 72° F	44705K241	00000


	4	Solid	150	Square	356 Aluminum	150 psi @ 72° F	44705K255	00000
	6	Solid	150	Square	356 Aluminum	150 psi @ 72° F	44705K478	000000


	BSPT Male
	Male


			1/8	Solid	—	Square	6061 Aluminum	250 psi @ 72° F	2617K46	0000


			1/4	Solid	—	Square	6061 Aluminum	250 psi @ 72° F	2617K47	0000
			3/8	Solid	—	Square	6061 Aluminum	250 psi @ 72° F	2617K48	0000
			1/2	Solid	—	Square	6061 Aluminum	250 psi @ 72° F	2617K49	00000
			3/4	Solid	—	Square	6061 Aluminum	250 psi @ 72° F	2617K51	00000
			1	Solid	—	Square	6061 Aluminum	250 psi @ 72° F	2617K52	00000
			1 1/2	Solid	—	Square	6061 Aluminum	250 psi @ 72° F	2617K53	00000
			2	Solid	—	Square	6061 Aluminum	250 psi @ 72° F	2617K54	00000

180° Bend Connectors

Image of Product. Front orientation. Pipe Traps. Low-Pressure Aluminum Threaded Pipe Fittings.

180° bend connectors are also known as U-bends.

	Material	Max. Pressure @ Temp.	Shape		Each
NPT Female



	1/2	356 Aluminum	150 psi @ 72° F	180° Bend	44705K479	000000


	3/4	356 Aluminum	150 psi @ 72° F	180° Bend	44705K481	00000
	1	356 Aluminum	150 psi @ 72° F	180° Bend	44705K482	00000

Locknuts

NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.

	Finished Material	Max. Pressure @ Temp.		Each
NPSL Female



	1/4	6061 Aluminum	150 psi @ 72° F	44705K412	00000


	3/8	6061 Aluminum	150 psi @ 72° F	44705K413	0000
	1/2	356 Aluminum	150 psi @ 72° F	44705K414	0000
	3/4	356 Aluminum	150 psi @ 72° F	44705K415	00000
	1	356 Aluminum	150 psi @ 72° F	44705K416	00000
	1 1/4	356 Aluminum	150 psi @ 72° F	44705K417	00000
	1 1/2	356 Aluminum	150 psi @ 72° F	44705K418	00000
	2	356 Aluminum	150 psi @ 72° F	44705K419	00000
	2 1/2	356 Aluminum	150 psi @ 72° F	44705K331	00000
	3	356 Aluminum	150 psi @ 72° F	44705K332	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.

External-Square-Drive Plugs

Male

	Construction	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Mil. Spec.		Each
NPT Male



	1/4	Solid	3000	Square	6061 Aluminum	3,000 psi @ 72° F	Fed. Spec. QQ-A-200/8	3867T55	000000


	1/2	Solid	3000	Square	6061 Aluminum	3,000 psi @ 72° F	Fed. Spec. QQ-A-200/8	3867T56	00000
	3/4	Solid	3000	Square	6061 Aluminum	3,000 psi @ 72° F	Fed. Spec. QQ-A-200/8	3867T57	00000
	1	Solid	3000	Square	6061 Aluminum	3,000 psi @ 72° F	Fed. Spec. QQ-A-200/8	3867T58	00000