1"-6 Bushings | McMaster-Carr

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.

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"-6	Acme	2"	2 63/64"	1	1:1	0.167"	Acme Class 2G	Rockwell B96	Not Rated	—	95080A123	000000


	360 Brass



			1"-6	Acme	1"	1 5/8"	1	1:1	0.167"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A121	00000


			932 Bearing Bronze



					1"-6	Acme	1 17/32"	1 21/32"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	ASTM B505	95090A505	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.

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"-6	Acme	1"	1 5/8"	1	1:1	0.167"	Acme Class 2G	Rockwell B55	Not Rated	ASTM B16	95100A421	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.

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"-6	2"	2.984"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	95365A135	000000


	932 Bearing Bronze



			1"-6	2"	2.984"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 65	Not Rated	5,000	1343K129	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"-6	2"	2.984"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 217	Not Rated	Not Rated	95365A335	000000


	932 Bearing Bronze



			1"-6	2"	2.984"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 65	Not Rated	5,000	1343K229	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.

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.	Temp., ° F		Each
673 Bronze



		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	—	95072A115	000000


		PET



				1"-6	1 1/2"	1.5"	Acme	1:1	1	0.167"	1 3/8"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	2,500	15 to 175	95075A120	00000

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"-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	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.

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


	Black-Oxide 1117 Carbon Steel



			1 3/8"-16	2 49/64"	33/64"	2 17/64"	Brinell 135	1329K104	00000


			303 Stainless Steel



					1 3/8"-16	2 49/64"	33/64"	2 17/64"	Brinell 140	1329K14	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.

Externally Threaded Nuts—Right-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—Right-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.

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



		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	95072A301	000000

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.

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



		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	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.

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


	303 Stainless Steel



			1 3/8"-16	2 49/64"	33/64"	2 17/64"	Brinell 140	1329K14	00000