1 1/4"-5 Threaded Rods | McMaster-Carr

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10,000 psi to 19,999 psi

20,000 psi to 39,999 psi

40,000 psi to 99,999 psi

100,000 psi or greater

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78 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.

Lead Screws—Right-Hand Thread

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.

Alloy Steel—Alloy steel components are harder and stronger than carbon steel components.

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

316 Stainless Steel—316 stainless steel components have excellent 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	Lg.	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 1/4"-5	Acme	12"	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A764	000000


	1 1/4"-5	Acme	3 ft.	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A878	00000
	1 1/4"-5	Acme	6 ft.	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A131	000000
	1 1/4"-5	Acme	12 ft.	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	64,000	ASTM A108	98935A683	000000


	Zinc-Plated Carbon Steel



			1 1/4"-5	Acme	6"	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	93255A481	00000


			1 1/4"-5	Acme	12"	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	93255A487	00000
			1 1/4"-5	Acme	18"	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	93255A493	00000
			1 1/4"-5	Acme	3 ft.	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	68,000	ASTM A108	98941A455	00000
			1 1/4"-5	Acme	6 ft.	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	68,000	ASTM A108	98941A290	000000


			Alloy Steel



					1 1/4"-5	Acme	12"	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93420A650	00000


					1 1/4"-5	Acme	2 ft.	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A125	000000
					1 1/4"-5	Acme	3 ft.	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A651	000000
					1 1/4"-5	Acme	4 ft.	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A126	000000
					1 1/4"-5	Acme	6 ft.	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A230	000000
					1 1/4"-5	Acme	8 ft.	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A127	000000
					1 1/4"-5	Acme	12 ft.	1	1:1	0.2"	Acme Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	93410A872	000000


					18-8 Stainless Steel



							1 1/4"-5	Acme	18"	1	1:1	0.2"	Acme Class 2G	—	Rockwell B96	Not Rated	—	94330A680	000000


							1 1/4"-5	Acme	3 ft.	1	1:1	0.2"	Acme Class 2G	—	Rockwell B96	Not Rated	—	95061A862	000000
							1 1/4"-5	Acme	6 ft.	1	1:1	0.2"	Acme Class 2G	—	Rockwell B96	Not Rated	—	95061A218	000000
							1 1/4"-5	Acme	12 ft.	1	1:1	0.2"	Acme Class 2G	—	Rockwell B96	Not Rated	—	95061A972	000000


							316 Stainless Steel



									1 1/4"-5	Acme	12"	1	1:1	0.2"	Acme Class 2G	ASTM Grade B8M	Rockwell B97	75,000	ASTM A193	97014A625	000000


									1 1/4"-5	Acme	3 ft.	1	1:1	0.2"	Acme Class 2G	ASTM Grade B8M	Rockwell B97	75,000	ASTM A193	97014A345	000000
									1 1/4"-5	Acme	6 ft.	1	1:1	0.2"	Acme Class 2G	ASTM Grade B8M	Rockwell B97	75,000	ASTM A193	97014A190	000000

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 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 1/4"-5	Acme	3	1	1:1	0.2"	Acme Class 2G	SAE Grade 2	Rockwell B61	53,000	ASTM A108	98935A529	000000


	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


	Alloy Steel



			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

Hex-Head Screws—Right-Hand Thread

Hex head screws fasten heavy loads. They’re generally shorter than lead screws and can be tightened with a wrench. Length is measured from under the head.

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.

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



		1 1/4"-5	Acme	3"	1	1:1	0.2"	2 1/2" to 3"	1 7/8"	25/32"	Acme Class 2G	SAE Grade 5	Rockwell C19	105,000	93097A340	000000


		1 1/4"-5	Acme	4"	1	1:1	0.2"	3 1/2" to 4"	1 7/8"	25/32"	Acme Class 2G	SAE Grade 5	Rockwell C19	105,000	93097A350	00000
		1 1/4"-5	Acme	6"	1	1:1	0.2"	5 1/2" to 6"	1 7/8"	25/32"	Acme Class 2G	SAE Grade 5	Rockwell C19	105,000	93097A360	00000

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



	1 1/4"-5	Acme	3"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93023A669	000000


	18-8 Stainless Steel



			1 1/4"-5	Acme	3"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	93030A124	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 1/4"-5	Acme	3"	1 5/8"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	93026A657	000000

Flange Nuts—Right-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 1/4"-5	Acme	2 1/2"	2"	3"	3/4"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	95120A175	0000000

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 1/4"-5	Acme	2 1/2"	2"	3"	3/4"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	95120A575	0000000

Round Nuts—Right-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 1/4"-5	Acme	2 1/2"	3 47/64"	1	1:1	0.2"	Acme Class 2G	Rockwell B96	Not Rated	—	95080A128	0000000


	360 Brass



			1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A127	00000


			932 Bearing Bronze



					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	95090A129	00000

Round Nuts—Left-Hand Thread

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

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
360 Brass



	1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A427	000000


	932 Bearing Bronze



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



	1 1/4"-5	Acme	1 7/32"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	94815A116	000000


	Zinc-Plated Carbon Steel



			1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B75	Not Rated	—	98948A820	00000


			360 Brass



					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


					18-8 Stainless Steel



							1 1/4"-5	Acme	1 7/32"	2"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	—	95066A221	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.

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	Fastener Strength Grade/Class	Hardness	Tensile Strength, psi	Specs. Met		Each
Carbon Steel



	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	000000


	Zinc-Plated Carbon Steel



			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 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	—	Rockwell B75	Not Rated	ASTM B16	95155A363	00000

Square Nuts—Right-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



	1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A163	000000

Square Nuts—Left-Hand Thread

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



	1 1/4"-5	Acme	1 1/4"	2"	1	1:1	0.2"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95270A563	000000

Flat Handles—Right-Hand Thread

Handles fasten and position lead screw components. Handles are easy to grip and tighten by hand for quick assembly and disassembly.

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

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
Cast Iron



	1 1/4"-5	Acme	1 1/8"	9 1/2"	1	1:1	0.2"	Acme Class 2G	Rockwell B72	Not Rated	92428A680	000000

Ball Handles—Right-Hand Thread

Handles fasten and position lead screw components. Handles are easy to grip and tighten by hand for quick assembly and disassembly.

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

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
Cast Iron



	1 1/4"-5	Acme	1 1/8"	9 1/2"	1	1:1	0.2"	Acme Class 2G	Rockwell B72	Not Rated	92428A160	000000

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—Right-Hand Thread


	Right-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.

	Lg.	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 1/4"-5	3 ft.	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A045	000000


	1 1/4"-5	6 ft.	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A145	00000


	Black-Oxide 4140 Alloy Steel



			1 1/4"-5	18"	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A309	00000


			1 1/4"-5	3 ft.	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A651	000000
			1 1/4"-5	6 ft.	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 271	125,000	98940A124	000000


			304 Stainless Steel



					1 1/4"-5	3 ft.	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A371	000000


					1 1/4"-5	6 ft.	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 150	72,000	98980A430	000000

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.

	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 1/4"-5	3	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A445	000000


	1 1/4"-5	6	Acme	1:1	1	0.2"	±0.009"/1 ft.	Acme Class 2C	Brinell 126	64,000	99030A545	00000


	Black-Oxide 4140 Alloy Steel



			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


			304 Stainless Steel



					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

Round Nuts—Right-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.

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
Iron



	1 1/4"-5	2 1/2"	3.734"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	95365A143	0000000


	932 Bearing Bronze



			1 1/4"-5	2 1/2"	3.734"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 65	Not Rated	7,850	1343K126	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.

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
Iron



	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	0000000


	932 Bearing Bronze



			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

Externally Threaded Nuts—Right-Hand Thread

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

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

673 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.

PEEK—PEEK plastic nuts handle twice as much heat as PET and acetal plastic nuts. They have good chemical resistance and excellent 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, psi	Dynamic Thrust Load Cap., lb.	Temp., ° F		Each
673 Bronze



		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	—	95072A118	0000000


		PET



				1 1/4"-5	1 3/4"	2.125"	Acme	1:1	1	0.2"	1 31/32"-18	13/16"	Acme Class 2C	Not Rated	Not Rated	3,900	15 to 175	95075A218	00000


				PEEK



						1 1/4"-5	1 3/4"	2.125"	Acme	1:1	1	0.2"	1 31/32"-18	13/16"	Acme Class 2C	Not Rated	16,000	3,900	-40 to 525	90493A240	000000

Externally Threaded Nuts—Left-Hand Thread

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

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.		Each
673 Bronze



		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	0000000

Flange Nuts—Right-Hand Thread

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

Flange 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.

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



		1 1/4"-5	3 3/4"	1.875"	3 1/4"	5/8"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 65	35,000	7,800	97790A180	0000000

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.

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 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 156	95082A645	000000


	Black-Oxide 1117 Carbon Steel



			1 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 135	1329K105	00000


			303 Stainless Steel



					1 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 140	1329K15	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
Right-Hand Thread







	Black-Oxide 12L14 Carbon Steel

	1 1/4"-5	2 1/2"	3/4"	1	Brinell 163	6698K19	000000

Two-Piece Clamping Acme Lead Screw Collars

Mount these two-piece collars anywhere on an Acme lead screw without removing components. Use them to separate and position components or 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 1215 Carbon Steel—Black-oxide carbon steel collars have mild corrosion resistance.

	No. of Thread Starts	Hardness		Each
Right-Hand Thread







	Black-Oxide 1215 Carbon Steel

	1 1/4"-5	2 1/16"	1/2"	1	Brinell 167	2207N17	000000