1 1/2"-12 Couplings | McMaster-Carr

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7 Products

Coupling Nuts

Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.

Low-Strength Steel

Rated Grade 2 or lower, these are about half as strong as medium-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

						Each
	Thread Size	Lg.	Wd.	Threading		1-9	10-49	50-Up
Zinc-Plated Steel



		1 1/2"-12	3 1/2"	2"	Fully Threaded	90264A295	000000	000000	000000

High-Strength Steel

Rated Grade 8 or Class 10, these are about 25% stronger than medium-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

							Each
	Thread Size	Lg.	Wd.	Fastener Strength Grade/Class	Threading		1-9	10-49	50-Up
Zinc-Plated Steel



		1 1/2"-12	3 1/2"	2 1/4"	SAE Grade 8	Fully Threaded	90983A263	0000000	000000	000000

Rod Alignment Couplers


	Angle of Misalignment

Increase cylinder life by fixing alignment problems between air or hydraulic cylinders and driven components. Couplers have a threaded end that moves to compensate for the angle of misalignment, reducing wear on cylinder bearings and seals. Couplers have a male and female end.

	Body Material	OD	Overall Lg.	Max. Pull Force, lbf		Each
5° of Misalignment



	1 1/2"-12	Steel	4"	6 5/8"	45,750	6418T6	0000000

Internally Threaded Ball Joint Rod Ends

Made of steel, these rod ends generally handle higher loads than stainless steel, aluminum, and nylon rod ends. They don’t come lubricated, so you’ll need to lubricate them during installation and on an ongoing basis.

	Shank
	Thread Size	Ctr. Lg.	Thread Lg.	ID	Max. Ball Swivel	Overall Wd.	Overall Thk.	Static Radial Load Cap., lb.	Material	Choose a Shank Thread Direction		Each
Ball Joints



		1 1/2"-12	5 3/8"	2 5/8"	1 1/2"	6.5°	3 1/2"	1 5/16"	64,750	Zinc-Plated Alloy Steel	Right Hand, Left Hand	60645K76	0000000

Threaded Rod Collars

To install, thread these one-piece collars onto the end of your shaft. They clamp evenly around the shaft to create a strong, mar-free hold. Tighten the clamping screw to secure.

Black-Oxide 1215 Carbon Steel—Black-oxide steel collars have some corrosion resistance.

303 Stainless Steel—303 stainless steel collars have excellent corrosion resistance.

			Clamping Screw		Black-Oxide 1215 Carbon Steel		303 Stainless Steel
For Shaft Thread Size	OD	Wd.	Type	No. of		Each		Each
1 1/2"-12	2 3/8"	9/16"	Socket Head	1	6438K36	000000	6438K94	000000

Ball Joint Rod Ends

Made of steel, these rod ends generally handle higher loads than stainless steel, aluminum, and nylon rod ends. They don’t come lubricated, so you’ll need to lubricate during installation and on an ongoing basis.

	Shank
	Thread Size	Ctr. Lg.	Thread Lg.	ID	Max. Ball Swivel	Overall Wd.	Overall Thk.	Static Radial Load Cap., lb.	Material	Choose a Shank Thread Direction		Each
Ball Joints



		1 1/2"-12	5 3/8"	3"	1 1/2"	6.5°	3 1/2"	1 5/16"	64,750	Zinc-Plated Alloy Steel	Right Hand, Left Hand	60645K66	0000000