Left-Hand Threaded Coupling Nuts

Filter by

System of Measurement

Thread Size

Hex Length

Material

Length

Hex Size

Nut Type

Thread Length

Finish

Pitch

Thread Fit

Unified Standard Class 2B

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Width

Export Control Classification Number (ECCN)

EAR99

REACH

Compliant

RoHS

Compliant

Compliant with Exemptions

DFARS Specialty Metals

Hardness

73 Products

Left-Hand to Right-Hand Female Hex Thread Adapters

Often called sleeve nuts, these thread adapters fasten parts with right-hand threads to parts with left-hand threads.

Black-Oxide Steel—Choose black-oxide steel adapters to match the aesthetics of your system or for their mild corrosion resistance. The finish won't chip or rub off. They resist rust in indoor and dry environments, but avoid using them in corrosive environments.

Zinc-Plated Steel—Zinc-plated steel adapters are strong and corrosion resistant.

Aluminum—At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.

18-8 Stainless Steel—18-8 stainless steel adapters have good corrosion resistance.

316 Stainless Steel—316 stainless steel adapters have the best corrosion resistance. They stand up to wet environments, just like 18-8 stainless steel adapters, but unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and harsh chemicals.

			Thread Lg.		Thread Fit		Hex				Each
	Thread Size (A)	Thread Size (B)	(A)	(B)	(A)	(B)	Size	Length	Hardness		1-9	10-Up
Black-Oxide Steel



		10-24	10-24	3/8"	3/8"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	1 1/2"	Rockwell B80	91998A105	000000	000000


		1/4"-20	1/4"-20	1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B80	91998A108	00000	00000
		1/4"-28	1/4"-28	1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B80	91998A109	00000	00000
		5/16"-18	5/16"-18	1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	7/16"	2"	Rockwell B80	91998A110	00000	00000
		5/16"-24	5/16"-24	1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	7/16"	2"	Rockwell B80	91998A111	00000	00000
		3/8"-16	3/8"-16	3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1/2"	2 1/2"	Rockwell B80	91998A112	00000	00000
		3/8"-24	3/8"-24	3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1/2"	2 1/2"	Rockwell B80	91998A113	00000	00000
		1/2"-13	1/2"-13	1"	1"	Unified Standard Class 2B	Unified Standard Class 2B	5/8"	3"	Rockwell B80	91998A115	00000	00000
		3/4"-10	3/4"-10	1 1/2"	1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	5"	Rockwell B80	91998A117	00000	00000
		7/8"-9	7/8"-9	1 1/2"	1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 3/8"	5"	Rockwell B80	91998A118	00000	00000
		1"-8	1"-8	1 1/2"	1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 5/8"	5"	Rockwell B80	91998A119	00000	00000


		M6 x 1 mm	M6 x 1 mm	8 mm	8 mm	Metric Class 6H	Metric Class 6H	10 mm	50 mm	Rockwell B80	91998A122	00000	00000
		M8 x 1.25 mm	M8 x 1.25 mm	12 mm	12 mm	Metric Class 6H	Metric Class 6H	11 mm	50 mm	Rockwell B80	91998A123	00000	00000
		M10 x 1.5 mm	M10 x 1.5 mm	20 mm	20 mm	Metric Class 6H	Metric Class 6H	16 mm	65 mm	Rockwell B80	91998A124	00000	00000
		M12 x 1.75 mm	M12 x 1.75 mm	25 mm	25 mm	Metric Class 6H	Metric Class 6H	16 mm	75 mm	Rockwell B80	91998A125	00000	00000


		Zinc-Plated Steel



				3/8"-16	3/8"-16	1 3/4"	1 3/4"	Unified Standard Class 2B	Unified Standard Class 2B	3/4"	4"	Rockwell B65	94280A115	00000	00000


				1/2"-13	1/2"-13	1 3/4"	1 3/4"	Unified Standard Class 2B	Unified Standard Class 2B	7/8"	4"	Rockwell B65	94280A119	00000	00000
				5/8"-11	5/8"-11	2 1/4"	2 1/4"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/8"	5"	Rockwell B65	94280A123	00000	00000
				3/4"-10	3/4"-10	2 1/4"	2 1/4"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	5"	Rockwell B65	94280A127	00000	00000
				7/8"-9	7/8"-9	3 1/4"	3 1/4"	Unified Standard Class 2B	Unified Standard Class 2B	1 3/8"	7"	Rockwell B65	94280A131	00000	00000
				1"-8	1"-8	3 1/4"	3 1/4"	Unified Standard Class 2B	Unified Standard Class 2B	1 5/8"	7"	Rockwell B65	94280A135	00000	00000
				1 1/8"-7	1 1/8"-7	3 1/2"	3 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 3/4"	7 1/2"	Rockwell B65	94280A101	00000	00000
				1 1/4"-7	1 1/4"-7	3 1/2"	3 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	2"	7 1/2"	Rockwell B65	94280A102	00000	00000
				1 1/2"-6	1 1/2"-6	3 3/4"	3 3/4"	Unified Standard Class 2B	Unified Standard Class 2B	2 3/8"	8"	Rockwell B65	94280A104	00000	00000


				Aluminum



						5-40	5-40	1/4"	1/4"	Unified Standard Class 2B	Unified Standard Class 2B	5/16"	1"	Rockwell B56	96864A102	00000	00000


						6-32	6-32	1/4"	1/4"	Unified Standard Class 2B	Unified Standard Class 2B	5/16"	1"	Rockwell B56	96864A103	00000	00000
						8-32	8-32	5/16"	5/16"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	1"	Rockwell B56	96864A104	00000	00000
						10-32	10-32	3/8"	3/8"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	1 1/2"	Rockwell B56	96864A106	00000	00000
						1/4"-20	1/4"-20	1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B56	96864A108	00000	00000
						1/4"-28	1/4"-28	1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B56	96864A109	00000	00000
						5/16"-24	5/16"-24	1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	7/16"	2"	Rockwell B56	96864A112	00000	00000
						3/8"-16	3/8"-16	3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1/2"	2 1/2"	Rockwell B56	96864A113	00000	00000
						3/8"-24	3/8"-24	3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1/2"	2 1/2"	Rockwell B56	96864A114	00000	00000


						18-8 Stainless Steel



								4-40	4-40	1/4"	1/4"	Unified Standard Class 2B	Unified Standard Class 2B	5/16"	1"	Rockwell B80	97372A101	0000	0000


6-32	6-32							1/4"	1/4"	Unified Standard Class 2B	Unified Standard Class 2B	5/16"	1"	Rockwell B80	97372A102	0000	0000
8-32	8-32							5/16"	5/16"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	1"	Rockwell B80	97372A103	0000	0000
10-24	10-24							3/8"	3/8"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	1 1/2"	Rockwell B80	97372A104	0000	0000
10-32	10-32							3/8"	3/8"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	1 1/2"	Rockwell B80	97372A105	0000	0000
12-24	12-24							1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B80	97372A112	00000	00000
1/4"-20	1/4"-20							1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B80	97372A106	0000	0000
1/4"-28	1/4"-28							1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B80	97372A113	00000	00000
5/16"-18	5/16"-18							1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	7/16"	2"	Rockwell B80	97372A107	0000	0000
5/16"-24	5/16"-24							1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	7/16"	2"	Rockwell B80	97372A114	00000	00000
3/8"-16	3/8"-16							3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1/2"	2 1/2"	Rockwell B80	97372A108	00000	00000


3/8"-24	3/8"-24							3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1/2"	2 1/2"	Rockwell B80	97372A115	00000	00000
1/2"-13	1/2"-13							1"	1"	Unified Standard Class 2B	Unified Standard Class 2B	5/8"	3"	Rockwell B80	97372A109	00000	00000
5/8"-11	5/8"-11							1 1/2"	1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/8"	5"	Rockwell B80	97372A117	00000	00000
3/4"-10	3/4"-10							1 1/2"	1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	5"	Rockwell B80	97372A118	00000	00000
1"-8	1"-8							1 1/2"	1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 5/8"	5"	Rockwell B80	97372A121	00000	00000
M4 x 0.7 mm	M4 x 0.7 mm							8 mm	8 mm	Metric Class 6H	Metric Class 6H	10 mm	25 mm	Rockwell B80	97372A122	0000	0000
M5 x 0.8 mm	M5 x 0.8 mm							8 mm	8 mm	Metric Class 6H	Metric Class 6H	10 mm	38 mm	Rockwell B80	97372A123	0000	0000
M6 x 1 mm	M6 x 1 mm							8 mm	8 mm	Metric Class 6H	Metric Class 6H	10 mm	50 mm	Rockwell B80	97372A124	00000	00000
M8 x 1.25 mm	M8 x 1.25 mm							12 mm	12 mm	Metric Class 6H	Metric Class 6H	11 mm	50 mm	Rockwell B80	97372A125	00000	00000
M10 x 1.5 mm	M10 x 1.5 mm							20 mm	20 mm	Metric Class 6H	Metric Class 6H	16 mm	65 mm	Rockwell B80	97372A126	00000	00000


M12 x 1.75 mm	M12 x 1.75 mm	25 mm						25 mm	Metric Class 6H	Metric Class 6H	16 mm	75 mm	Rockwell B80	97372A127	00000	00000


316 Stainless Steel



		10-32	10-32					3/8"	3/8"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	1 1/2"	Rockwell B80	95537A106	00000	00000


		12-24	12-24					1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B80	95537A107	00000	00000
		1/4"-20	1/4"-20					1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B80	95537A108	00000	00000
		1/4"-28	1/4"-28					1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	3/8"	2"	Rockwell B80	95537A109	00000	00000
		5/16"-18	5/16"-18					1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	7/16"	2"	Rockwell B80	95537A111	00000	00000
		5/16"-24	5/16"-24					1/2"	1/2"	Unified Standard Class 2B	Unified Standard Class 2B	7/16"	2"	Rockwell B80	95537A112	00000	00000
		3/8"-16	3/8"-16					3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1/2"	2 1/2"	Rockwell B80	95537A113	00000	00000
		3/8"-24	3/8"-24					3/4"	3/4"	Unified Standard Class 2B	Unified Standard Class 2B	1/2"	2 1/2"	Rockwell B80	95537A114	00000	00000
		1/2"-13	1/2"-13					1"	1"	Unified Standard Class 2B	Unified Standard Class 2B	5/8"	3"	Rockwell B80	95537A116	00000	00000
		5/8"-11	5/8"-11	1 1/2"				1 1/2"	Unified Standard Class 2B	Unified Standard Class 2B	1 1/8"	5"	Rockwell B80	95537A117	00000	00000
		3/4"-10	3/4"-10	1 1/2"	1 1/2"			Unified Standard Class 2B	Unified Standard Class 2B	1 1/4"	5"	Rockwell B80	95537A118	00000	00000

Left-Hand-Thread Coupling Nuts

Pair with left-hand threaded rods, and turn to the left to tighten. 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-Up
Zinc-Plated Steel



		3/8"-16	1 3/4"	5/8"	Fully Threaded	93345A231	00000	00000


		1/2"-13	1 3/4"	11/16"	Fully Threaded	93345A233	0000	0000
		5/8"-11	2 1/8"	13/16"	Fully Threaded	93345A235	0000	0000
		3/4"-10	2 1/4"	1"	Fully Threaded	93345A236	00000	00000
		7/8"-9	2 1/2"	1 1/4"	Fully Threaded	93345A239	00000	00000
		1"-8	2 3/4"	1 3/8"	Fully Threaded	93345A038	00000	00000
		1 1/4"-7	3"	1 5/8"	Fully Threaded	93345A240	00000	00000