Left Hand Lead Screws | McMaster-Carr

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Left Hand

Right Hand

Right Hand and Left Hand

System of Measurement

Thread Size

Component

Nut Type

Material

Length

Thread Type

Number of Thread Starts

Travel Distance per Turn

Thread Fit

Threading

Speed Ratio

Tensile Strength

40,000 psi to 99,999 psi

100,000 psi or greater

Hardness

Diameter

REACH

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

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Exempt

Not Compliant

Fastener Strength Grade/Class

ASTM Grade B7

SAE Grade 2

Dynamic Thrust Load Capacity

Less than 1,000 lb.

1,000 lb. to 1,999 lb.

2,000 lb. to 9,999 lb.

10,000 lb. to 19,999 lb.

Shaft Type

Finish

450 Products

Precision Acme Lead Screws and Nuts

Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won’t unexpectedly move when the lead screw is at rest. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.

Lead Screws—Left-Hand Thread


	Left-Hand Threads

1018 Low-Carbon Steel—Carbon steel lead screws and flanges have good machinability.

Black-Oxide 4140 Alloy Steel—Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance and a dark surface color.

304 Stainless Steel—304 stainless steel lead screws have good corrosion resistance.

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 Size	Lg., ft.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength, psi		Each
1018 Low-Carbon Steel



		1/4"-16	3	Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A432	000000


		1/4"-16	6	Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A532	00000
		3/8"-10	3	Stub Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A527	00000
		3/8"-10	6	Stub Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A427	00000
		3/8"-16	3	Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A534	00000
		3/8"-16	6	Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A434	000000
		1/2"-10	3	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A405	00000
		1/2"-10	6	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A505	00000
		5/8"-8	3	Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A409	00000
		5/8"-8	6	Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A509	00000
		5/8"-10	3	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A628	00000


		5/8"-10	6	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A528	00000
		3/4"-5	3	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A413	00000
		3/4"-5	6	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A513	000000
		3/4"-6	3	Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A417	00000
		3/4"-6	6	Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A517	000000
		3/4"-8	3	Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A475	00000
		3/4"-8	6	Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A575	00000
		3/4"-10	3	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A752	00000
		3/4"-10	6	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A230	000000
		3/4"-16	3	Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A477	00000


		3/4"-16	6	Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A577	000000
		1"-4	3	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A418	000000
		1"-4	6	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A518	000000
		1"-5	3	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A425	00000
		1"-5	6	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A525	00000
		1"-6	3	Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A429	00000
		1"-6	6	Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A529	00000
		1"-8	3	Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A476	00000
		1"-8	6	Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A576	000000
		1"-10	3	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A433	00000


		1"-10	6	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A533	00000
		1 1/4"-4	3	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A441	00000
		1 1/4"-4	6	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A541	000000
		1 1/4"-5	3	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A445	00000
		1 1/4"-5	6	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A545	00000
		1 1/2"-4	3	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A453	00000
		1 1/2"-4	6	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A553	000000
		1 1/2"-10	3	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A431	000000
		1 1/2"-10	6	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A531	000000
		2"-4	3	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A457	000000


		2"-4	6	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A557	000000


		Black-Oxide 4140 Alloy Steel



				3/8"-12	3	Acme	1:1	1	0.083"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A715	00000


3/8"-12				6	Acme	1:1	1	0.083"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A404	00000
3/8"-16	3			Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A719	00000
3/8"-16	6			Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A316	000000
1/2"-10	3			Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A725	00000
1/2"-10	6			Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A406	00000
5/8"-5	3			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A734	00000
5/8"-5	6			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A408	000000
5/8"-8	3			Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A733	00000
5/8"-8	6			Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A409	000000
5/8"-10	3			Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A731	00000


5/8"-10	6			Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A324	000000
3/4"-5	3			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A735	00000
3/4"-5	6			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A412	000000
3/4"-6	3			Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A737	00000
3/4"-6	6			Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A413	000000
3/4"-10	3			Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A739	000000
3/4"-10	6			Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A414	000000
1"-4	3			Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A741	000000
1"-4	6			Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A418	000000
1"-5	3			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A743	000000


1"-5	6			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A419	000000
1"-10	3			Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A747	000000
1"-10	6			Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A421	000000
1 1/4"-4	3			Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A749	000000
1 1/4"-4	6			Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A423	000000
1 1/4"-5	3			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A751	000000
1 1/4"-5	6			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A424	000000
1 1/2"-4	3			Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A753	000000
1 1/2"-4	6			Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A427	000000
1 1/2"-5	3			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A755	000000


1 1/2"-5	6			Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A428	000000
2"-4	3			Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A757	000000
2"-4	6			Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A432	000000


304 Stainless Steel



				3/8"-8	3	Stub Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A001	00000


				3/8"-8	6	Stub Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A620	000000
				3/8"-10	3	Stub Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A002	00000
				3/8"-10	6	Stub Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A003	000000
				3/8"-12	3	Acme	1:1	1	0.083"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A004	00000
				3/8"-12	6	Acme	1:1	1	0.083"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A005	00000
				3/8"-16	3	Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A225	00000
				3/8"-16	6	Acme	1:1	1	0.063"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A006	000000
				1/2"-10	3	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A008	00000
				1/2"-10	6	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A670	000000
				5/8"-8	3	Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A240	00000


		5/8"-8	6	Acme	1:1	1	0.125"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A100	000000
		5/8"-10	3	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A238	000000
		5/8"-10	6	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A101	000000
		3/4"-5	3	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A242	000000
		3/4"-5	6	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A103	000000
		3/4"-6	3	Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A113	000000
		3/4"-6	6	Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A693	000000
		3/4"-10	3	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A246	000000
		3/4"-10	6	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A695	000000
		1"-4	3	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A106	000000


		1"-4	6	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A119	000000
		1"-5	3	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A250	000000
		1"-5	6	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A710	000000
		1"-6	3	Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A208	000000
		1"-6	6	Acme	1:1	1	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A204	000000
		1"-10	3	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A312	000000
		1"-10	6	Acme	1:1	1	0.1"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A303	000000
		1 1/4"-5	3	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A307	000000
		1 1/4"-5	6	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A308	000000
		1 1/2"-4	3	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A406	000000


		1 1/2"-4	6	Acme	1:1	1	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A735	000000

Round Nuts—Left-Hand Thread

Iron—Iron nuts have good machinability and high strength.

932 Bearing Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

PET—PET plastic nuts are lightweight and corrosion resistant.

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 Size	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength	Dynamic Thrust Load Cap., lb.	Temp., ° F		Each
Iron



		3/8"-8	3/4"	1.344"	Stub Acme	1:1	1	0.125"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A621	000000


		3/8"-10	3/4"	1.344"	Stub Acme	1:1	1	0.1"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A623	00000
		3/8"-12	3/4"	1.344"	Acme	1:1	1	0.083"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A311	00000
		3/8"-16	3/4"	1.344"	Acme	1:1	1	0.063"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A629	00000
		1/2"-10	1"	1.469"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A315	00000
		5/8"-5	1 1/4"	1.859"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A613	00000
		5/8"-8	1 1/4"	1.859"	Acme	1:1	1	0.125"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A319	00000
		5/8"-10	1 1/4"	1.859"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A625	00000
		3/4"-5	1 1/2"	2.234"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A323	00000
		3/4"-6	1 1/2"	2.234"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A327	00000
		3/4"-10	1 1/2"	2.234"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A626	00000


		1"-4	2"	2.984"	Acme	1:1	1	0.25"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A606	000000
		1"-5	2"	2.984"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A331	000000
		1"-6	2"	2.984"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A335	00000
		1"-10	2"	2.984"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A339	00000
		1 1/4"-4	2 1/2"	3.734"	Acme	1:1	1	0.25"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A607	000000
		1 1/4"-5	2 1/2"	3.734"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A343	000000
		1 1/2"-4	3"	4.469"	Acme	1:1	1	0.25"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	—	95365A347	000000


		932 Bearing Bronze



				3/8"-8	3/4"	1.344"	Acme	1:1	1	0.125"	Acme Class 2C	Brinell 65	Not Rated	700	—	1343K231	00000


				3/8"-10	3/4"	1.344"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	Not Rated	700	—	1343K233	00000
				3/8"-12	3/4"	1.344"	Acme	1:1	1	0.083"	Acme Class 2C	Brinell 65	Not Rated	700	—	1343K238	00000
				1/2"-10	1"	1.465"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	Not Rated	1,300	—	1343K234	00000
				5/8"-8	1 1/4"	1.859"	Acme	1:1	1	0.125"	Acme Class 2C	Brinell 65	Not Rated	2,000	—	1343K232	00000
				5/8"-10	1 1/4"	1.859"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	Not Rated	2,000	—	1343K235	00000
				3/4"-5	1 1/2"	2.234"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 65	Not Rated	2,900	—	1343K224	000000
				3/4"-6	1 1/2"	2.234"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 65	Not Rated	2,900	—	1343K228	000000
				3/4"-10	1 1/2"	2.234"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	Not Rated	2,900	—	1343K236	000000
				1"-4	2"	2.984"	Acme	1:1	1	0.25"	Acme Class 2C	Brinell 65	Not Rated	5,000	—	1343K216	000000
				1"-5	2"	2.984"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 65	Not Rated	5,000	—	1343K225	000000


				1"-6	2"	2.984"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 65	Not Rated	5,000	—	1343K229	000000
				1"-10	2"	2.984"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	Not Rated	5,000	—	1343K237	000000
				1 1/4"-4	2 1/2"	3.734"	Acme	1:1	1	0.25"	Acme Class 2C	Brinell 65	Not Rated	7,850	—	1343K217	000000
				1 1/4"-5	2 1/2"	3.734"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 65	Not Rated	7,850	—	1343K226	000000
				1 1/2"-4	3"	4.469"	Acme	1:1	1	0.25"	Acme Class 2C	Brinell 65	Not Rated	12,000	—	1343K218	000000


				PET



						3/8"-8	3/4"	1.344"	Acme	1:1	1	0.125"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	1349K135	00000


						3/8"-10	3/4"	1.344"	Acme	1:1	1	0.1"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	1349K139	00000
						3/8"-12	3/4"	1.344"	Acme	1:1	1	0.083"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	1349K151	00000
						1/2"-10	1"	1.465"	Acme	1:1	1	0.1"	Acme Class 2C	Not Rated	Not Rated	650	15 to 175	1349K142	00000
						5/8"-8	1 1/4"	1.859"	Acme	1:1	1	0.125"	Acme Class 2C	Not Rated	Not Rated	1,000	15 to 175	1349K137	00000
5/8"-10						1 1/4"	1.859"	Acme	1:1	1	0.1"	Acme Class 2C	Not Rated	Not Rated	1,000	15 to 175	1349K144	00000
3/4"-5	1 1/2"					2.234"	Acme	1:1	1	0.2"	Acme Class 2C	Not Rated	Not Rated	1,450	15 to 175	1349K122	000000
3/4"-6	1 1/2"					2.234"	Acme	1:1	1	0.167"	Acme Class 2C	Not Rated	Not Rated	1,450	15 to 175	1349K131	000000
3/4"-10	1 1/2"					2.234"	Acme	1:1	1	0.1"	Acme Class 2C	Not Rated	Not Rated	1,450	15 to 175	1349K146	000000

Externally Threaded Nuts—Left-Hand Thread

Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Externally Threaded Nuts—Left-Hand Thread.

Combine externally threaded nuts with a flange to create a custom flange nut.

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

673 Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

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.

								External Thread
	Thread Size	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Size	Lg.	Thread Fit	Hardness	Tensile Strength	Dynamic Thrust Load Cap., lb.		Each
360 Brass



		3/4"-8	1 1/4"	1.125"	Acme	1:1	1	0.125"	1"-18	1/2"	Acme Class 2C	Brinell 70	Not Rated	2,800	95072A352	000000


		3/4"-16	1 1/4"	1.125"	Acme	1:1	1	0.063"	1"-18	1/2"	Acme Class 2C	Brinell 70	Not Rated	2,800	95072A372	00000
		1"-8	1 1/2"	1.5"	Acme	1:1	1	0.125"	1 3/8"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	5,000	95072A362	00000
		1 1/2"-10	2 19/64"	2.125"	Acme	1:1	1	0.1"	1 31/32"-18	13/16"	Acme Class 2C	Brinell 70	Not Rated	11,250	95072A442	000000


		673 Bronze



				1/4"-16	5/8"	0.688"	Acme	1:1	1	0.063"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A882	00000


				3/8"-12	5/8"	0.688"	Acme	1:1	1	0.083"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A208	00000
				1/2"-10	3/4"	1.125"	Acme	1:1	1	0.1"	15/16"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A209	00000
				5/8"-5	1"	1.125"	Acme	1:1	1	0.2"	15/16"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A210	00000
				5/8"-8	1"	1.125"	Acme	1:1	1	0.125"	15/16"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A211	00000
				5/8"-10	1"	1.125"	Acme	1:1	1	0.1"	15/16"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A249	00000
				3/4"-5	1 1/4"	1.125"	Acme	1:1	1	0.2"	1"-18	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A212	00000
				3/4"-6	1 1/4"	1.125"	Acme	1:1	1	0.167"	1"-18	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A213	00000
				3/4"-10	1 1/4"	1.125"	Acme	1:1	1	0.1"	1"-18	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A231	00000
				1"-4	1 1/2"	1.5"	Acme	1:1	1	0.25"	1 3/8"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A232	00000
				1"-5	1 1/2"	1.5"	Acme	1:1	1	0.2"	1 3/8"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A214	00000


				1"-6	1 1/2"	1.5"	Acme	1:1	1	0.167"	1 3/8"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A224	00000
				1"-10	1 1/2"	1.5"	Acme	1:1	1	0.1"	1 3/8"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A216	00000
				1 1/4"-4	1 3/4"	2.125"	Acme	1:1	1	0.25"	1 31/32"-18	13/16"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A217	000000
				1 1/4"-5	1 3/4"	2.125"	Acme	1:1	1	0.2"	1 31/32"-18	13/16"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A218	000000
				1 1/2"-4	2 19/64"	2.125"	Acme	1:1	1	0.25"	1 31/32"-18	13/16"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A219	000000
				1 1/2"-5	2 19/64"	2.125"	Acme	1:1	1	0.2"	1 31/32"-18	13/16"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A225	000000
				2"-4	2 3/4"	2.75"	Acme	1:1	1	0.25"	2 35/64"-18	7/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A226	000000

Platform Nuts—Left-Hand Thread

Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Platform Nuts—Left-Hand Thread.

Platform nuts have wide, machinable surfaces for custom mounting.

932 Bearing Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

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.

	Lg.	Wd.	Ht.	Ctr. Ht.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength	Dynamic Thrust Load Cap., lb.		Each
932 Bearing Bronze



	1/2"-10	1 3/4"	2"	1 1/8"	5/8"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	Not Rated	1,200	1710K49	0000000


	3/4"-5	2 1/4"	2 5/8"	1 5/8"	15/16"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 65	Not Rated	2,800	1710K44	000000
	3/4"-6	2 1/4"	2 5/8"	1 5/8"	15/16"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 65	Not Rated	2,800	1710K47	000000
	3/4"-10	2 1/4"	2 5/8"	1 5/8"	15/16"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	Not Rated	2,800	1710K51	000000
	1"-4	3"	3"	1 15/16"	1 1/8"	Acme	1:1	1	0.25"	Acme Class 2C	Brinell 65	Not Rated	5,000	1710K41	000000
	1"-5	3"	3"	1 15/16"	1 1/8"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 65	Not Rated	5,000	1710K45	000000
	1"-6	3"	3"	1 15/16"	1 1/8"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 65	Not Rated	5,000	1710K48	000000
	1"-10	3"	3"	1 15/16"	1 1/8"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	Not Rated	5,000	1710K52	000000
	1 1/2"-4	4 1/2"	3 5/8"	2 9/16"	1 1/2"	Acme	1:1	1	0.25"	Acme Class 2C	Brinell 65	Not Rated	11,000	1710K43	000000

Flanges

Image of Attribute. Front orientation. Contains Annotated.

Thread onto an externally threaded acme nut to create a custom flange nut.

1117 Carbon Steel—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.

Black-Oxide 1117 Carbon Steel—Black-oxide carbon steel flanges have mild corrosion resistance in dry environments and a dark surface color.

1215 Carbon Steel—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.

303 Stainless Steel—303 stainless steel flanges have good corrosion resistance.

	Flange Dia.	Flange Thk.	Bolt Circle Dia.	Flange Hardness		Each
1117 Carbon Steel



	1 3/8"-16	2 49/64"	33/64"	2 17/64"	Brinell 156	95082A644	000000


	1 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 156	95082A645	00000
	2 35/64"-18	4 15/16"	29/32"	4 1/16"	Brinell 156	95082A646	00000


	Black-Oxide 1117 Carbon Steel



			9/16"-18	1 39/64"	13/32"	1 1/8"	Brinell 135	1329K101	00000


			15/16"-16	2 39/64"	17/32"	2 3/32"	Brinell 135	1329K102	00000
			1 3/8"-16	2 49/64"	33/64"	2 17/64"	Brinell 135	1329K104	00000
			1 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 135	1329K105	00000


			1215 Carbon Steel



					9/16"-18	1 39/64"	13/32"	1 1/8"	Not Rated	95082A641	00000


					15/16"-16	2 5/8"	17/32"	2 3/32"	Not Rated	95082A642	00000
					1"-18	2 5/8"	17/32"	2 3/32"	Not Rated	95082A643	00000


					303 Stainless Steel



							9/16"-18	1 39/64"	13/32"	1 1/8"	Brinell 140	1329K11	00000


							15/16"-16	2 5/8"	17/32"	2 3/32"	Brinell 140	1329K12	00000
							1"-18	2 5/8"	17/32"	2 3/32"	Brinell 140	1329K13	00000
							1 3/8"-16	2 49/64"	33/64"	2 17/64"	Brinell 140	1329K14	00000
							1 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 140	1329K15	000000
							2 35/64"-18	4 15/16"	29/32"	4 1/16"	Brinell 140	1329K16	000000

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.

Lead Screws—Left-Hand Thread

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

Alloy Steel—Alloy steel components are harder and stronger than carbon 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 Size	Thread Type	Lg., ft.	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	3	1	1:1	0.063"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A404	000000


		1/4"-16	Acme	6	1	1:1	0.063"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A405	00000
		3/8"-12	Acme	3	1	1:1	0.083"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A411	0000
		3/8"-12	Acme	6	1	1:1	0.083"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A410	00000
		1/2"-8	Acme	3	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A417	00000
		1/2"-8	Acme	6	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A418	00000
		1/2"-10	Acme	3	1	1:1	0.1"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A419	00000
		1/2"-10	Acme	6	1	1:1	0.1"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A420	00000
		5/8"-6	Acme	3	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A426	00000
		5/8"-6	Acme	6	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A427	00000
		5/8"-8	Acme	3	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A429	00000


		5/8"-8	Acme	6	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A430	00000
		3/4"-5	Acme	3	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A439	00000
		3/4"-5	Acme	6	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A440	00000
		3/4"-6	Acme	3	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A449	00000
		3/4"-6	Acme	6	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A450	00000
		3/4"-8	Acme	3	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A451	00000
		3/4"-8	Acme	6	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A452	00000
		7/8"-6	Acme	3	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A459	00000
		7/8"-6	Acme	6	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A460	00000
		1"-4	Acme	3	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A468	00000


		1"-4	Acme	6	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A469	00000
		1"-5	Acme	3	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A471	00000
		1"-5	Acme	6	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A470	00000
		1"-6	Acme	3	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A479	00000
		1"-6	Acme	6	1	1:1	0.167"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A480	00000
		1"-8	Acme	3	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A485	00000
		1"-8	Acme	6	1	1:1	0.125"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A486	00000
		1"-10	Acme	3	1	1:1	0.1"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A489	00000
		1"-10	Acme	6	1	1:1	0.1"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A490	00000
		1 1/8"-5	Acme	3	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A509	00000


		1 1/8"-5	Acme	6	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A510	00000
		1 1/4"-4	Acme	3	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A519	00000
		1 1/4"-4	Acme	6	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A520	000000
		1 1/4"-5	Acme	3	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A529	00000
		1 1/4"-5	Acme	6	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A530	000000
		1 3/8"-4	Acme	3	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A539	00000
		1 3/8"-4	Acme	6	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A540	000000
		1 1/2"-4	Acme	3	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A549	00000
		1 1/2"-4	Acme	6	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A550	000000
		1 1/2"-5	Acme	3	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A554	00000


		1 1/2"-5	Acme	6	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A555	000000
		2"-4	Acme	3	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A559	000000
		2"-4	Acme	6	1	1:1	0.25"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A560	000000


		Alloy Steel



				1/4"-16	Acme	3	1	1:1	0.063"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A404	00000


1/4"-16	Acme			6	1	1:1	0.063"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A405	00000
3/8"-8	Stub Acme			3	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A409	00000
3/8"-8	Stub Acme			6	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A410	00000
3/8"-10	Stub Acme			3	1	1:1	0.1"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A411	00000
3/8"-10	Stub Acme			6	1	1:1	0.1"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A412	00000
3/8"-12	Acme			3	1	1:1	0.083"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A414	00000
3/8"-12	Acme			6	1	1:1	0.083"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A415	000000
1/2"-8	Acme			3	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A419	00000
1/2"-8	Acme			6	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A420	000000
1/2"-10	Acme			3	1	1:1	0.1"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A424	00000


1/2"-10	Acme			6	1	1:1	0.1"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A425	000000
5/8"-6	Acme			3	1	1:1	0.167"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A429	000000
5/8"-6	Acme			6	1	1:1	0.167"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A430	000000
5/8"-8	Acme			3	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A434	00000
5/8"-8	Acme			6	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A435	000000
3/4"-5	Acme			3	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A444	00000
3/4"-5	Acme			6	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A445	000000
3/4"-6	Acme			3	1	1:1	0.167"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A454	00000
3/4"-6	Acme			6	1	1:1	0.167"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A455	000000
3/4"-8	Acme			3	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A449	00000


3/4"-8	Acme			6	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A450	000000
7/8"-6	Acme			3	1	1:1	0.167"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A464	000000
7/8"-6	Acme			6	1	1:1	0.167"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A465	000000
1"-4	Acme			3	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A469	000000
1"-4	Acme			6	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A470	000000
1"-5	Acme			3	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A474	000000
1"-5	Acme			6	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A475	000000
1"-6	Acme			3	1	1:1	0.167"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A484	00000
1"-6	Acme			6	1	1:1	0.167"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A485	000000
1"-8	Acme			3	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A489	000000


1"-8	Acme			6	1	1:1	0.125"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A490	000000
1"-10	Acme			3	1	1:1	0.1"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A494	000000
1"-10	Acme			6	1	1:1	0.1"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A495	000000
1 1/8"-5	Acme			3	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A504	000000
1 1/8"-5	Acme			6	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A505	000000
1 1/4"-4	Acme			3	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A524	000000
1 1/4"-4	Acme			6	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A525	000000
1 1/4"-5	Acme			3	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A534	000000
1 1/4"-5	Acme			6	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A535	000000
1 3/8"-4	Acme			3	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A544	000000


1 3/8"-4	Acme			6	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A545	000000
1 1/2"-4	Acme			3	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A554	000000
1 1/2"-4	Acme			6	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A555	000000
1 1/2"-5	Acme			3	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A556	000000
1 1/2"-5	Acme			6	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A557	000000
2"-4	Acme			3	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A564	000000
2"-4	Acme			6	1	1:1	0.25"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A565	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

Flange Nuts—Left-Hand Thread

Flange nuts move objects along the length of a lead screw. Flange nuts have a wide machinable flange for custom mounting.

932 Bearing Bronze—932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair 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.

					Flange
	Thread Size	Thread Type	Ht.	Dia.	Dia.	Thk.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength		Each
932 Bearing Bronze



		1/2"-10	Acme	1"	3/4"	1 1/4"	1/8"	1	1:1	0.1"	Acme Class 2G	Not Rated	Not Rated	95120A511	0000000


		5/8"-8	Acme	1 1/4"	7/8"	1 1/2"	1/4"	1	1:1	0.125"	Acme Class 2G	Not Rated	Not Rated	95120A519	000000
		3/4"-5	Acme	1 1/2"	1"	2"	3/8"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	95120A523	000000
		3/4"-6	Acme	1 1/2"	1"	2"	3/8"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	95120A527	000000
		7/8"-6	Acme	1 3/4"	1 1/4"	2 1/4"	1/2"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	95120A543	000000
		1"-5	Acme	2"	1 1/2"	2 1/2"	1/2"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	95120A551	000000
		1"-6	Acme	2"	1 1/2"	2 1/2"	1/2"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	95120A555	000000
		1 1/8"-5	Acme	2 1/4"	1 3/4"	2 3/4"	5/8"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	95120A567	000000
		1 1/4"-4	Acme	2 1/2"	2"	3"	3/4"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	95120A571	000000
		1 1/4"-5	Acme	2 1/2"	2"	3"	3/4"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	95120A575	000000
		1 1/2"-4	Acme	3"	2 1/2"	3 1/2"	3/4"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	95120A583	000000


		2"-4	Acme	4"	3"	4"	1"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	95120A591	000000

Round Nuts—Left-Hand Thread

Round nuts move objects along the length of a lead screw.

Cast Iron—Cast iron components have good machinability and high strength.

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

932 Bearing Bronze—932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair 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.	Dia.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength	Specs. Met		Each
Cast Iron



	1/2"-10	Acme	1"	1 15/32"	1	1:1	0.1"	Acme Class 2G	Rockwell B96	Not Rated	—	95080A403	000000


	5/8"-8	Acme	1 1/4"	1 55/64"	1	1:1	0.125"	Acme Class 2G	Rockwell B96	Not Rated	—	95080A408	00000
	3/4"-5	Acme	1 1/2"	2 15/64"	1	1:1	0.2"	Acme Class 2G	Rockwell B96	Not Rated	—	95080A412	00000
	3/4"-6	Acme	1 1/2"	2 15/64"	1	1:1	0.167"	Acme Class 2G	Rockwell B96	Not Rated	—	95080A413	00000
	1"-5	Acme	2"	2 63/64"	1	1:1	0.2"	Acme Class 2G	Rockwell B96	Not Rated	—	95080A422	000000


	360 Brass



			1/2"-10	Acme	1/2"	7/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A403	0000


			5/8"-8	Acme	5/8"	1"	1	1:1	0.125"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A405	00000
			3/4"-5	Acme	3/4"	1 1/4"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A407	00000
			3/4"-6	Acme	3/4"	1 1/4"	1	1:1	0.167"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A409	00000
			7/8"-6	Acme	7/8"	1 1/2"	1	1:1	0.167"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A417	00000
			1"-5	Acme	1"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A419	00000
			1"-6	Acme	1"	1 5/8"	1	1:1	0.167"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A421	00000
			1"-10	Acme	1"	1 5/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A423	00000
			1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A427	00000


			932 Bearing Bronze



					1/2"-10	Acme	29/32"	29/32"	1	1:1	0.1"	Acme Class 2G	Not Rated	Not Rated	ASTM B505	95090A404	00000


					5/8"-8	Acme	1 1/32"	1 9/32"	1	1:1	0.125"	Acme Class 2G	Not Rated	Not Rated	ASTM B505	95090A408	00000
					3/4"-5	Acme	1 9/32"	1 13/32"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	ASTM B505	95090A412	00000
					3/4"-6	Acme	1 9/32"	1 13/32"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	ASTM B505	95090A417	00000
					1"-5	Acme	1 17/32"	1 21/32"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	ASTM B505	95090A427	00000
					1 1/4"-5	Acme	2 1/64"	2 5/32"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	ASTM B505	95090A429	00000

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

Square Nuts—Left-Hand Thread

Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.

360 Brass—360 brass components have excellent machinability and 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	Specs. Met		Each
360 Brass



	3/8"-12	Acme	3/8"	3/4"	1	1:1	0.083"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A511	00000


	1/2"-10	Acme	1/2"	7/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A514	00000
	5/8"-8	Acme	5/8"	1"	1	1:1	0.125"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A519	00000
	3/4"-5	Acme	3/4"	1 1/4"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A523	00000
	3/4"-6	Acme	3/4"	1 1/4"	1	1:1	0.167"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A527	00000
	7/8"-6	Acme	7/8"	1 1/2"	1	1:1	0.167"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A543	00000
	1"-5	Acme	1"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A547	00000
	1"-6	Acme	1"	1 5/8"	1	1:1	0.167"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A551	00000
	1"-10	Acme	1"	1 5/8"	1	1:1	0.1"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A555	00000
	1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A563	00000
	1 1/2"-4	Acme	1 1/2"	2 1/4"	1	1:1	0.25"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A567	00000

Fast-Travel Precision Acme Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. The threads have a tight thread fit for accurate, repeatable starts and stops. Pair with a motor in automated motion and positioning applications. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.

Lead Screws—Left-Hand Thread

1018 Low-Carbon Steel—Carbon steel lead screws and flanges have good machinability.

Black-Oxide 4140 Alloy Steel—Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance.

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.

	Lg., ft.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength, psi		Each
1018 Low-Carbon Steel



	3/8"-12	3	Acme	2:1	2	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A424	000000


	3/8"-12	6	Acme	2:1	2	0.167"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A524	00000
	5/8"-8	3	Acme	2:1	2	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A472	00000
	5/8"-8	6	Acme	2:1	2	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A572	00000
	3/4"-6	3	Acme	2:1	2	0.333"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A412	00000
	3/4"-6	6	Acme	2:1	2	0.333"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A512	00000
	3/4"-8	3	Acme	2:1	2	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A473	00000
	3/4"-8	6	Acme	2:1	2	0.25"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A573	000000
	1"-4	3	Acme	2:1	2	0.5"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A406	00000
	1"-4	6	Acme	2:1	2	0.5"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A506	000000
	1"-6	3	Acme	2:1	2	0.333"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A470	00000


	1"-6	6	Acme	2:1	2	0.333"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A570	000000
	1"-10	3	Acme	10:1	10	1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A402	000000
	1"-10	6	Acme	10:1	10	1"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A502	000000
	1 1/2"-4	3	Acme	2:1	2	0.5"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A407	000000
	1 1/2"-4	6	Acme	2:1	2	0.5"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A507	000000


	Black-Oxide 4140 Alloy Steel



			3/4"-6	3	Acme	2:1	2	0.333"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A717	00000


			3/4"-6	6	Acme	2:1	2	0.333"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A417	000000

Round Nuts—Left-Hand Thread

932 Bearing Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

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.

	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength	Dynamic Thrust Load Cap., lb.		Each
932 Bearing Bronze



	1/4"-12	3/4"	1.344"	Acme	4:1	4	0.333"	Acme Class 2C	Brinell 65	Not Rated	320	1343K213	000000


	3/8"-8	3/4"	1.344"	Acme	2:1	2	0.25"	Acme Class 2C	Brinell 65	Not Rated	700	1343K214	00000
	3/8"-8	3/4"	1.344"	Acme	4:1	4	0.5"	Acme Class 2C	Brinell 65	Not Rated	700	1343K211	00000
	3/8"-10	3/4"	1.344"	Acme	2:1	2	0.2"	Acme Class 2C	Brinell 65	Not Rated	700	1343K221	00000
	1/2"-10	1"	1.469"	Acme	5:1	5	0.5"	Acme Class 2C	Brinell 65	Not Rated	1,300	1343K212	00000

Externally Threaded Nuts—Left-Hand Thread

Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Fast-Travel Precision Acme Lead Screws and Nuts, Externally Threaded Nuts—Left-Hand Thread.

Combine externally threaded nuts with a flange to create a custom flange nut.

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

673 Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

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.

								External Thread
	Thread Size	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Size	Lg.	Thread Fit	Hardness	Tensile Strength	Dynamic Thrust Load Cap., lb.		Each
360 Brass



		5/8"-8	1"	1.125"	Acme	2:1	2	0.25"	15/16"-16	1/2"	Acme Class 2C	Brinell 130	Not Rated	1,900	95072A322	000000


		3/4"-8	1 1/4"	1.125"	Acme	2:1	2	0.25"	1"-18	1/2"	Acme Class 2C	Brinell 130	Not Rated	2,800	95072A332	00000
		1"-4	1 1/2"	1.5"	Acme	2:1	2	0.5"	1 3/8"-16	1/2"	Acme Class 2C	Brinell 130	Not Rated	5,000	95072A552	00000
		1"-6	1 1/2"	1.5"	Acme	2:1	2	0.333"	1 3/8"-16	1/2"	Acme Class 2C	Brinell 130	Not Rated	5,000	95072A302	00000


		673 Bronze



				3/8"-12	5/8"	0.688"	Acme	2:1	2	0.167"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A772	00000


				3/4"-6	1 1/4"	1.125"	Acme	2:1	2	0.333"	1"-18	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A602	00000
				1"-10	1 1/2"	1.5"	Stub Acme	10:1	10	1"	1 3/8"-16	1/2"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A512	00000
				1 1/2"-4	2 19/64"	2.125"	Acme	2:1	2	0.5"	1 31/32"-18	13/16"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A562	000000

Flanges

Thread onto an externally threaded acme nut to create a custom flange nut.

1117 Carbon Steel—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.

1215 Carbon Steel—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.

303 Stainless Steel—303 stainless steel flanges have good corrosion resistance.

	Flange Dia.	Flange Thk.	Bolt Circle Dia.	Flange Hardness		Each
1117 Carbon Steel



	1 3/8"-16	2 49/64"	33/64"	2 17/64"	Brinell 156	95082A644	000000


	1 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 156	95082A645	00000


	1215 Carbon Steel



			9/16"-18	1 39/64"	13/32"	1 1/8"	Not Rated	95082A641	00000


			15/16"-16	2 5/8"	17/32"	2 3/32"	Not Rated	95082A642	00000
			1"-18	2 5/8"	17/32"	2 3/32"	Not Rated	95082A643	00000


			303 Stainless Steel



					9/16"-18	1 39/64"	13/32"	1 1/8"	Brinell 140	1329K11	00000


					15/16"-16	2 5/8"	17/32"	2 3/32"	Brinell 140	1329K12	00000
					1"-18	2 5/8"	17/32"	2 3/32"	Brinell 140	1329K13	00000
					1 3/8"-16	2 49/64"	33/64"	2 17/64"	Brinell 140	1329K14	00000
					1 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 140	1329K15	000000

Ball Screws and Nuts


	A	Ball Nuts Flange Nut Style E

Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, they have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread direction and size. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.

Ball Screws—Left-Hand Threaded

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

Root Diameter—Root diameter indicates the diameter the ball screw will be after machining away the threads.

	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temp. Range, ° F		Each
Alloy Steel



	5/8"-5	1	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N381	000000


	5/8"-5	2	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N382	00000
	5/8"-5	3	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N383	00000
	5/8"-5	6	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N384	000000
	1"-4	1	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N391	00000
	1"-4	2	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N392	000000
	1"-4	3	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N393	000000
	1"-4	6	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N394	000000

Externally Threaded Ball Nuts—Left-Hand Threaded

Image of Product. A. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Externally Threaded Nut, Ball Nuts, Style A.

Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.

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

	Thread Size	Lg.	Wd.	Ht.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
Black-Oxide Alloy Steel



	A	5/8"-5	1 45/64"	1"	1"	1	0.2"	15/16"-16	Rockwell C56	820	0.015"	-65 to 300	3405N456	000000


	A	1"-4	2 11/32"	1 1/2"	1 1/2"	1	0.25"	1 9/16"-18	Rockwell C56	1,620	0.015"	-65 to 300	3405N457	000000

Flange Ball Nuts—Left-Hand Threaded


Style E

Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.

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

						Flange
	Style	Thread Size	Lg.	Wd.	Ht.	Dia.	Thk.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
Black-Oxide Alloy Steel



		E	5/8"-5	1 47/64"	1"	1"	2 19/32"	17/32"	1	0.2"	2 3/32"	Rockwell C56	820	0.015"	-65 to 300	3405N401	0000000


		E	1"-4	2 5/8"	1 1/2"	1 1/2"	2 15/64"	5/8"	1	0.25"	2 3/4"	Rockwell C56	1,620	0.015"	-65 to 300	3405N402	000000
		E	1"-4	2 63/64"	1 1/2"	1 1/2"	3 15/64"	5/8"	1	0.25"	2 3/4"	Rockwell C56	1,620	0.015"	-65 to 300	3405N474	000000

Clamping Acme Lead Screw Collars

Thread these one-piece collars onto an Acme lead screw to separate and position components, or use them as an end stop to limit travel. Tighten the clamping screw to secure.

To ensure compatibility, please select a collar that has the same thread type, direction, size, and number of thread starts as your lead screw.

Black-Oxide 12L14 Carbon Steel—Black-oxide carbon steel collars have mild corrosion resistance.

	No. of Thread Starts	Hardness		Each
Left-Hand Thread







	Black-Oxide 12L14 Carbon Steel

	1/2"-10	1 5/16"	1/2"	1	Brinell 163	6698K61	000000


	3/4"-6	2"	5/8"	1	Brinell 163	6698K62	00000
	1"-5	2 1/4"	5/8"	1	Brinell 163	6698K63	00000