Acme Hex Nuts | McMaster-Carr

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195 Products

Acme Lead Screws and Nuts

Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.

Coupling Nuts—Right-Hand Thread

Coupling nuts connect two lead screws.

Carbon Steel—Carbon steel components are easier to machine than alloy steel components.

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

Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.

	Thread Type	Ht.	Wd.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength		Each
Carbon Steel



	3/8"-12	Acme	1 7/8"	1/2"	1	1:1	0.083"	Acme Class 2G	Rockwell B75	Not Rated	93023A661	000000


	1/2"-10	Acme	1 1/4"	5/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	93023A673	00000
	5/8"-8	Acme	2 1/8"	7/8"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	93023A662	00000
	3/4"-5	Acme	2 1/4"	1"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93023A664	00000
	3/4"-6	Acme	2 1/4"	1"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	93023A663	00000
	7/8"-6	Acme	2 1/2"	1 1/4"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	93023A665	00000
	1"-5	Acme	2 3/4"	1 3/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93023A667	00000
	1"-6	Acme	2 3/4"	1 3/8"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	93023A666	00000
	1"-10	Acme	2 3/4"	1 3/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	93023A680	00000
	1 1/8"-5	Acme	3"	1 1/2"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93023A668	00000
	1 1/4"-4	Acme	3"	1 5/8"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	93023A671	00000


	1 1/4"-5	Acme	3"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93023A669	00000
	1 3/8"-4	Acme	3 1/4"	1 7/8"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	93023A672	00000
	1 1/2"-4	Acme	3 1/2"	2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	93023A674	00000
	2"-4	Acme	4"	3"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	93023A675	000000
	2 1/2"-4	Acme	5"	3 1/2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	93023A327	000000


	18-8 Stainless Steel



			1/2"-10	Acme	1 1/4"	5/8"	1	1:1	0.1"	Acme Class 2G	Not Rated	Not Rated	93030A106	00000


			5/8"-8	Acme	2 1/8"	7/8"	1	1:1	0.125"	Acme Class 2G	Not Rated	Not Rated	93030A109	00000
			3/4"-5	Acme	2 1/4"	1"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	93030A112	00000
			3/4"-6	Acme	2 1/4"	1"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	93030A113	00000
			7/8"-6	Acme	2 1/2"	1 1/4"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	93030A115	00000
			1"-5	Acme	2 3/4"	1 3/8"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	93030A119	00000
			1"-6	Acme	2 3/4"	1 3/8"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	93030A117	00000
			1"-10	Acme	2 3/4"	1 3/8"	1	1:1	0.1"	Acme Class 2G	Not Rated	Not Rated	93030A118	00000
			1 1/8"-5	Acme	3"	1 1/2"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	93030A122	000000
			1 1/4"-4	Acme	3"	1 5/8"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	93030A123	000000
			1 1/4"-5	Acme	3"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	93030A124	000000


			1 1/2"-4	Acme	3 1/2"	2"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	93030A127	000000
			2"-4	Acme	4"	3"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	93030A129	000000

Coupling Nuts—Left-Hand Thread

Coupling nuts connect two lead screws.

Carbon Steel—Carbon steel components are easier to machine than alloy steel components.

Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.

	Thread Type	Ht.	Wd.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength		Each
Carbon Steel



	1/2"-10	Acme	1 1/4"	5/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	93026A648	000000


	5/8"-8	Acme	2 1/8"	7/8"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	93026A651	00000
	3/4"-5	Acme	2 1/4"	1"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93026A653	00000
	3/4"-6	Acme	2 1/4"	1"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	93026A652	00000
	7/8"-6	Acme	2 1/2"	1 1/4"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	93026A304	00000
	1"-5	Acme	2 3/4"	1 3/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93026A655	00000
	1"-6	Acme	2 3/4"	1 3/8"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	93026A654	00000
	1"-10	Acme	2 3/4"	1 3/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	93026A308	00000
	1 1/8"-5	Acme	3"	1 1/2"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93026A656	00000
	1 1/4"-4	Acme	3"	1 5/8"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	93026A658	00000
	1 1/4"-5	Acme	3"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93026A657	00000


	1 3/8"-4	Acme	3 1/4"	1 7/8"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	93026A313	00000
	1 1/2"-4	Acme	3 1/2"	2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	93026A659	000000
	2"-4	Acme	4"	3"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	93026A318	000000

Hex Nuts—Right-Hand Thread

Hex nuts fasten and position lead screw components.

Carbon Steel—Carbon steel components are easier to machine than alloy steel components.

Zinc-Plated Carbon Steel—Zinc-plated carbon steel components have mild corrosion resistance and are easier to machine than alloy steel components.

360 Brass—360 brass components have excellent machinability and good corrosion resistance.

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

Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.

	Thread Size	Thread Type	Ht.	Wd.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength	Specs. Met		Each
Carbon Steel



		1/4"-16	Acme	15/64"	1/2"	1	1:1	0.063"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A007	00000


		3/8"-8	Stub Acme	23/64"	11/16"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A011	0000
		3/8"-10	Stub Acme	23/64"	11/16"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A018	0000
		3/8"-12	Acme	23/64"	11/16"	1	1:1	0.083"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A106	0000
		1/2"-8	Acme	31/64"	7/8"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A024	0000
		1/2"-10	Acme	31/64"	7/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A107	0000
		5/8"-6	Acme	39/64"	1 1/16"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A029	0000
		5/8"-8	Acme	39/64"	1 1/16"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A108	0000
		3/4"-5	Acme	47/64"	1 1/4"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A117	0000
		3/4"-6	Acme	47/64"	1 1/4"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A109	0000
		3/4"-8	Acme	47/64"	1 1/4"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A034	0000


		7/8"-6	Acme	55/64"	1 7/16"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A123	0000
		1"-4	Acme	63/64"	1 5/8"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A037	0000
		1"-5	Acme	63/64"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A110	0000
		1"-6	Acme	63/64"	1 5/8"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A111	0000
		1"-8	Acme	63/64"	1 5/8"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A045	0000
		1"-10	Acme	63/64"	1 5/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A118	0000
		1 1/8"-5	Acme	1 7/64"	1 13/16"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A119	00000
		1 1/4"-4	Acme	1 1/4"	2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A112	00000
		1 1/4"-5	Acme	1 7/32"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A116	00000
		1 3/8"-4	Acme	1 11/32"	2 3/16"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A122	00000


		1 1/2"-4	Acme	1 15/32"	2 3/8"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A113	00000
		1 1/2"-5	Acme	1 15/32"	2 3/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A121	00000
		2"-4	Acme	1 31/32"	3"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A114	00000
		2 1/4"-4	Acme	2 1/2"	3 1/2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A125	000000
		2 1/2"-4	Acme	2 1/2"	3 1/2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A115	000000


		Zinc-Plated Carbon Steel



				1/4"-16	Acme	15/64"	1/2"	1	1:1	0.063"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A111	00000


				3/8"-8	Acme	23/64"	11/16"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A112	00000
				3/8"-10	Acme	23/64"	11/16"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A113	00000
				3/8"-12	Acme	23/64"	11/16"	1	1:1	0.083"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A114	00000
				1/2"-8	Acme	31/64"	7/8"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A115	00000
				1/2"-10	Acme	1/2"	7/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A730	00000
				5/8"-6	Acme	39/64"	1 1/16"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A116	00000
				5/8"-8	Acme	5/8"	1 1/16"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A740	00000
				3/4"-5	Acme	47/64"	1 1/4"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A117	00000
				3/4"-6	Acme	3/4"	1 1/4"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A750	00000
				3/4"-8	Acme	47/64"	1 1/4"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A118	00000


				7/8"-6	Acme	55/64"	1 7/16"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A119	00000
				1"-4	Acme	63/64"	1 5/8"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A121	00000
				1"-5	Acme	1"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A770	00000
				1"-6	Acme	63/64"	1 5/8"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A122	00000
				1"-8	Acme	63/64"	1 5/8"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A123	00000
				1"-10	Acme	63/64"	1 5/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A124	00000
				1 1/8"-5	Acme	1 7/64"	1 13/16"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A125	00000
				1 1/4"-4	Acme	1 7/32"	2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A126	00000
1 1/4"-5				Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A820	00000
1 3/8"-4	Acme			1 11/32"	2 3/16"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A127	00000


1 1/2"-4	Acme			1 15/32"	2 3/8"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A128	00000
1 1/2"-5	Acme			1 15/32"	2 3/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A129	00000
2"-4	Acme			1 31/32"	3"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A131	000000
2 1/4"-4	Acme			2 1/2"	3 1/2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A132	000000
2 1/2"-4	Acme			2 1/2"	3 1/2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A133	000000


360 Brass



				3/8"-12	Acme	3/8"	3/4"	1	1:1	0.083"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A111	0000


				1/2"-10	Acme	1/2"	7/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A114	0000
				5/8"-8	Acme	5/8"	1"	1	1:1	0.125"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A119	00000
				3/4"-5	Acme	3/4"	1 1/4"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A123	00000
				3/4"-6	Acme	3/4"	1 1/4"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A127	00000
				7/8"-6	Acme	7/8"	1 1/2"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A143	00000
				1"-5	Acme	1"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A147	00000
				1"-6	Acme	1"	1 5/8"	1	1:1	0.167"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A151	00000
				1"-10	Acme	1"	1 5/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A155	00000
				1 1/8"-5	Acme	1 1/8"	1 3/4"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A159	00000
				1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A163	00000


				1 1/2"-4	Acme	1 1/2"	2 1/4"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A167	00000
				2"-4	Acme	2"	3"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A171	000000
				2 1/2"-4	Acme	2 1/2"	3 1/2"	1	1:1	0.25"	Acme Class 2G	Rockwell B75	Not Rated	ASTM B16	95155A179	000000


				18-8 Stainless Steel



		1/4"-16				Acme	15/64"	1/2"	1	1:1	0.063"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A105	00000


		3/8"-8	Stub Acme			23/64"	11/16"	1	1:1	0.125"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A206	00000
		3/8"-10	Stub Acme			23/64"	11/16"	1	1:1	0.1"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A207	00000
		3/8"-12	Acme			23/64"	11/16"	1	1:1	0.083"	Acme Class 2G	Not Rated	Not Rated	—	95066A208	00000
		1/2"-8	Acme			31/64"	7/8"	1	1:1	0.125"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A209	00000
		1/2"-10	Acme			31/64"	7/8"	1	1:1	0.1"	Acme Class 2G	Not Rated	Not Rated	—	95066A212	00000
		5/8"-6	Acme			39/64"	1 1/16"	1	1:1	0.167"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A141	00000
		5/8"-8	Acme			39/64"	1 1/16"	1	1:1	0.125"	Acme Class 2G	Not Rated	Not Rated	—	95066A213	00000
		3/4"-5	Acme			47/64"	1 1/4"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	—	95066A214	00000
		3/4"-6	Acme			47/64"	1 1/4"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	—	95066A217	00000
		3/4"-8	Acme			47/64"	1 1/4"	1	1:1	0.125"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A152	00000


		7/8"-6	Acme			55/64"	1 1/2"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	—	95066A226	00000
		1"-4	Acme			63/64"	1 5/8"	1	1:1	0.25"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A166	00000
		1"-5	Acme			63/64"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	—	95066A215	00000
		1"-6	Acme			63/64"	1 5/8"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	—	95066A218	00000
		1"-8	Acme			63/64"	1 5/8"	1	1:1	0.125"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A168	00000
		1"-10	Acme			63/64"	1 5/8"	1	1:1	0.1"	Acme Class 2G	Not Rated	Not Rated	—	95066A219	00000
		1 1/8"-5	Acme			1 7/64"	1 3/4"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	—	95066A220	00000
		1 1/4"-4	Acme			1 1/4"	2"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	—	95066A225	00000
		1 1/4"-5	Acme			1 7/32"	2"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	—	95066A221	00000
		1 1/2"-4	Acme			1 15/32"	2 1/4"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	—	95066A216	000000


		1 1/2"-5	Acme			1 1/2"	2 1/4"	1	1:1	0.2"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A175	000000
		2"-4	Acme			1 31/32"	3"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	—	95066A233	000000
		2 1/4"-4	Acme			2 1/2"	3 1/2"	1	1:1	0.25"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A185	000000
		2 1/2"-4	Acme			2 1/2"	3 1/2"	1	1:1	0.25"	Acme Class 2G	Rockwell B97	Not Rated	—	95066A195	000000

Hex Nuts—Left-Hand Thread

Hex nuts fasten and position lead screw components.

Carbon Steel—Carbon steel components are easier to machine than alloy steel components.

Zinc-Plated Carbon Steel—Zinc-plated carbon steel components have mild corrosion resistance and are easier to machine than alloy steel components.

360 Brass—360 brass components have excellent machinability and good corrosion resistance.

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

Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.

	Thread Size	Thread Type	Ht.	Wd.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Fastener Strength Grade/Class	Hardness	Tensile Strength, psi	Specs. Met		Each
Carbon Steel



		1/4"-16	Acme	15/64"	1/2"	1	1:1	0.063"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A009	00000


		3/8"-8	Stub Acme	23/64"	11/16"	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A014	0000
		3/8"-10	Stub Acme	23/64"	11/16"	1	1:1	0.1"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A019	0000
		3/8"-12	Acme	23/64"	11/16"	1	1:1	0.083"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A106	0000
		1/2"-8	Acme	31/64"	7/8"	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A023	0000
		1/2"-10	Acme	31/64"	7/8"	1	1:1	0.1"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A107	0000
		5/8"-6	Acme	39/64"	1 1/16"	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A027	0000
		5/8"-8	Acme	39/64"	1 1/16"	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A108	0000
		3/4"-5	Acme	47/64"	1 1/4"	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A117	0000
		3/4"-6	Acme	47/64"	1 1/4"	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A109	0000
		3/4"-8	Acme	47/64"	1 1/4"	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A046	0000


		7/8"-6	Acme	55/64"	1 7/16"	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A120	00000
		1"-4	Acme	63/64"	1 5/8"	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A054	00000
		1"-5	Acme	63/64"	1 5/8"	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A110	0000
		1"-6	Acme	63/64"	1 5/8"	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A111	0000
		1"-8	Acme	63/64"	1 5/8"	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A066	00000
		1"-10	Acme	63/64"	1 5/8"	1	1:1	0.1"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A121	0000
		1 1/8"-5	Acme	1 7/64"	1 13/16"	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A119	00000
		1 1/4"-4	Acme	1 7/32"	2"	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A118	00000
		1 1/4"-5	Acme	1 7/32"	2"	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A112	00000
		1 3/8"-4	Acme	1 11/32"	2 3/16"	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A122	00000


		1 1/2"-4	Acme	1 15/32"	2 3/8"	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A113	00000
		1 1/2"-5	Acme	1 1/2"	2 3/8"	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A123	00000
		2"-4	Acme	2"	3"	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B85	64,000	—	91808A114	00000


		Zinc-Plated Carbon Steel



				1/2"-10	Acme	1/2"	7/8"	1	1:1	0.1"	Acme Class 2G	—	Rockwell B75	Not Rated	—	98948A130	00000


				5/8"-8	Acme	5/8"	1"	1	1:1	0.125"	Acme Class 2G	—	Rockwell B75	Not Rated	—	98948A140	00000
				3/4"-6	Acme	3/4"	1 1/4"	1	1:1	0.167"	Acme Class 2G	—	Rockwell B75	Not Rated	—	98948A150	00000
				1"-5	Acme	1"	1 5/8"	1	1:1	0.2"	Acme Class 2G	—	Rockwell B75	Not Rated	—	98948A170	00000
				1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	—	Rockwell B75	Not Rated	—	98948A220	00000


				360 Brass



						1/2"-10	Acme	1/2"	7/8"	1	1:1	0.1"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A314	0000


						5/8"-8	Acme	5/8"	1"	1	1:1	0.125"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A319	00000
						3/4"-5	Acme	3/4"	1 1/4"	1	1:1	0.2"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A323	00000
						3/4"-6	Acme	3/4"	1 1/4"	1	1:1	0.167"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A327	00000
						7/8"-6	Acme	7/8"	1 1/2"	1	1:1	0.167"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A343	00000
						1"-5	Acme	1"	1 5/8"	1	1:1	0.2"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A347	00000
						1"-6	Acme	1"	1 5/8"	1	1:1	0.167"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A351	00000
						1"-10	Acme	1"	1 5/8"	1	1:1	0.1"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A355	00000
						1 1/8"-5	Acme	1 1/8"	1 3/4"	1	1:1	0.2"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A359	00000
						1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A363	00000
1 1/2"-4						Acme	1 1/2"	2 1/4"	1	1:1	0.25"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A367	00000


2"-4	Acme					2"	3"	1	1:1	0.25"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A371	000000


18-8 Stainless Steel



						1/4"-16	Acme	15/64"	1/2"	1	1:1	0.063"	Acme Class 2G	—	Rockwell B97	Not Rated	—	95066A305	00000


						3/8"-8	Stub Acme	23/64"	11/16"	1	1:1	0.125"	Acme Class 2G	—	Rockwell B97	Not Rated	—	95066A355	00000
						3/8"-10	Stub Acme	23/64"	11/16"	1	1:1	0.1"	Acme Class 2G	—	Rockwell B97	Not Rated	—	95066A357	00000
						3/8"-12	Acme	23/64"	11/16"	1	1:1	0.083"	Acme Class 2G	—	Not Rated	Not Rated	—	95066A408	00000
						1/2"-8	Acme	31/64"	7/8"	1	1:1	0.125"	Acme Class 2G	—	Rockwell B97	Not Rated	—	95066A366	00000
						1/2"-10	Acme	31/64"	7/8"	1	1:1	0.1"	Acme Class 2G	—	Not Rated	Not Rated	—	95066A412	00000
						5/8"-6	Acme	39/64"	1 1/16"	1	1:1	0.167"	Acme Class 2G	—	Rockwell B97	Not Rated	—	95066A371	00000
						5/8"-8	Acme	39/64"	1 1/16"	1	1:1	0.125"	Acme Class 2G	—	Not Rated	Not Rated	—	95066A413	00000
						3/4"-5	Acme	47/64"	1 1/4"	1	1:1	0.2"	Acme Class 2G	—	Not Rated	Not Rated	—	95066A414	00000
						3/4"-6	Acme	47/64"	1 1/4"	1	1:1	0.167"	Acme Class 2G	—	Not Rated	Not Rated	—	95066A417	00000
						3/4"-8	Acme	47/64"	1 1/4"	1	1:1	0.125"	Acme Class 2G	—	Rockwell B97	Not Rated	—	95066A383	00000


						7/8"-6	Acme	55/64"	1 1/2"	1	1:1	0.167"	Acme Class 2G	—	Not Rated	Not Rated	—	95066A426	00000
						1"-4	Acme	63/64"	1 5/8"	1	1:1	0.25"	Acme Class 2G	—	Rockwell B97	Not Rated	—	95066A389	00000
						1"-5	Acme	63/64"	1 5/8"	1	1:1	0.2"	Acme Class 2G	—	Not Rated	Not Rated	—	95066A415	00000
						1"-6	Acme	63/64"	1 5/8"	1	1:1	0.167"	Acme Class 2G	—	Not Rated	Not Rated	—	95066A418	00000

Metric Lead Screws and Nuts

Hex Nuts—Right-Hand Thread

Hex nuts fasten and position lead screw components.

Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.

	Thread Type	Ht., mm	Wd., mm	No. of Thread Starts	Speed Ratio	Travel Distance per Turn, mm	Thread Fit	Fastener Strength Grade/Class	Hardness	Tensile Strength		Each
Carbon Steel



	M12 × 3 mm	Metric Trapezoidal	12	22.2	1	1:1	3	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A120	000000


	M16 × 4 mm	Metric Trapezoidal	16	27	1	1:1	4	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A160	00000
	M20 × 4 mm	Metric Trapezoidal	20	31.75	1	1:1	4	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A200	00000
	M26 × 5 mm	Metric Trapezoidal	25.4	41.3	1	1:1	5	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A260	00000
	M40 × 7 mm	Metric Trapezoidal	39.9	60.33	1	1:1	7	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A400	00000