Flange Lead Screw Nuts | McMaster-Carr

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155 Products

Metric Fast-Travel Ultra-Precision Lead Screws and Nuts


	Style D	Style E	Style F

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. To ensure compatibility, select components that have the same thread size and number of thread starts.

Flange Nuts—Right-Hand Thread


Style D	Style E	Style F


Style D	Style E	Style F

Acetal—Acetal nuts have good wear and corrosion resistance.

Wear-Compensating Internal O-Ring—Flange nuts with a wear-compensating internal O-ring resist backlash to keep the nuts in place and maintain a tight fit even when their threads begin to wear. They’re often used in 3D printing and robotic applications.

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
	Style	Thread Size	Lg.	Dia.	Dia.	Wd.	Ht.	Thk.	Thread Type	Speed Ratio	Bolt Circle Dia.	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	No. of Mounting Holes	Temp., ° F		Each
Acetal



		D	M2 × 0.5 mm	1/2"	0.297"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	2:1	39/64"	2	1	Not Rated	8,000	10	2	-40 to 185	97783A240	000000


		D	M4 × 1.25 mm	1/2"	0.297"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	8:1	39/64"	8	10	Not Rated	8,000	25	2	-40 to 185	97783A250	00000
		D	M5 × 1.25 mm	1/2"	0.297"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	4:1	39/64"	4	5	Not Rated	8,000	25	2	-40 to 185	97783A260	00000
		E	M8 × 2 mm	3/4"	0.548"	1 1/8"	—	—	3/16"	Metric Rounded Trapezoidal	2:1	7/8"	2	4	Not Rated	8,000	75	3	-40 to 185	97783A270	00000
		F	M8 × 2.5 mm	25/32"	0.787"	1 27/64"	—	—	5/16"	Metric Rounded Trapezoidal	4:1	1 7/64"	4	10	Durometer 74D	10,000	Not Rated	6	-40 to 185	2391N11	00000
		F	M10 × 3 mm	63/64"	0.984"	1 21/32"	—	—	25/64"	Metric Rounded Trapezoidal	4:1	1 11/32"	4	12	Durometer 74D	10,000	Not Rated	6	-40 to 185	2391N12	00000
		F	M12 × 2.5 mm	1 3/8"	1.102"	1 57/64"	—	—	15/32"	Metric Rounded Trapezoidal	2:1	1 1/2"	2	5	Durometer 74D	10,000	Not Rated	6	-40 to 185	2391N13	00000
		F	M16 × 5 mm	1 3/8"	1.102"	1 57/64"	—	—	15/32"	Metric Rounded Trapezoidal	7:1	1 1/2"	7	35	Durometer 74D	10,000	Not Rated	6	-40 to 185	2391N14	00000
		F	M20 × 5 mm	1 47/64"	1.26"	2 11/64"	—	—	15/32"	Metric Rounded Trapezoidal	4:1	1 49/64"	4	20	Durometer 74D	10,000	Not Rated	6	-40 to 185	2391N15	000000
		F	M20 × 7.5 mm	1 47/64"	1.26"	2 11/64"	—	—	15/32"	Metric Rounded Trapezoidal	8:1	1 49/64"	8	60	Durometer 74D	10,000	Not Rated	6	-40 to 185	2391N16	000000


		PEEK



				D	M2 × 0.4 mm	9/32"	0.209"	—	15/32"	15/64"	5/64"	Metric Rounded Trapezoidal	2:1	11/32"	2	0.75	Durometer 83D	Not Rated	2	2	—	4537N181	00000


				D	M2 × 0.4 mm	9/32"	0.209"	—	15/32"	15/64"	5/64"	Metric Rounded Trapezoidal	4:1	11/32"	4	1.5	Durometer 83D	Not Rated	2	2	—	4537N182	00000
				D	M2 × 0.4 mm	9/32"	0.209"	—	15/32"	15/64"	5/64"	Metric Rounded Trapezoidal	8:1	11/32"	8	3	Durometer 83D	Not Rated	2	2	—	4537N183	00000
				D	M3 × 0.5 mm	21/64"	0.295"	—	39/64"	5/16"	3/32"	Metric Rounded Trapezoidal	2:1	15/32"	2	1	Durometer 83D	Not Rated	4	2	—	4537N184	00000
				D	M3 × 0.5 mm	21/64"	0.295"	—	39/64"	5/16"	3/32"	Metric Rounded Trapezoidal	6:1	15/32"	6	3	Durometer 83D	Not Rated	4	2	—	4537N185	00000
				D	M3 × 0.5 mm	21/64"	0.295"	—	39/64"	5/16"	3/32"	Metric Rounded Trapezoidal	12:1	15/32"	12	6	Durometer 83D	Not Rated	4	2	—	4537N186	00000
				D	M4 × 1 mm	13/32"	0.354"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	4:1	19/32"	4	4	Durometer 83D	Not Rated	10	2	—	4537N187	00000
				D	M4 × 1 mm	13/32"	0.354"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	8:1	19/32"	8	8	Durometer 83D	Not Rated	10	2	—	4537N188	00000


				PEEK with Wear-Compensating Internal O-Ring



						D	M2 × 0.4 mm	5/16"	0.228"	—	15/32"	15/64"	5/64"	Metric Rounded Trapezoidal	2:1	11/32"	2	0.75	Durometer 83D	Not Rated	1	2	—	4537N201	00000


						D	M2 × 0.4 mm	5/16"	0.228"	—	15/32"	15/64"	5/64"	Metric Rounded Trapezoidal	4:1	11/32"	4	1.5	Durometer 83D	Not Rated	1	2	—	4537N202	00000
						D	M2 × 0.4 mm	5/16"	0.228"	—	15/32"	15/64"	5/64"	Metric Rounded Trapezoidal	8:1	11/32"	8	3	Durometer 83D	Not Rated	1	2	—	4537N203	00000
						D	M3 × 0.5 mm	25/64"	0.315"	—	39/64"	5/16"	3/32"	Metric Rounded Trapezoidal	2:1	15/32"	2	1	Durometer 83D	Not Rated	2	2	—	4537N204	00000
						D	M3 × 0.5 mm	25/64"	0.315"	—	39/64"	5/16"	3/32"	Metric Rounded Trapezoidal	6:1	15/32"	6	3	Durometer 83D	Not Rated	2	2	—	4537N205	00000
						D	M3 × 0.5 mm	25/64"	0.315"	—	39/64"	5/16"	3/32"	Metric Rounded Trapezoidal	12:1	15/32"	12	6	Durometer 83D	Not Rated	2	2	—	4537N206	00000
						D	M4 × 1 mm	31/64"	0.406"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	4:1	19/32"	4	4	Durometer 83D	Not Rated	4	2	—	4537N207	00000
						D	M4 × 1 mm	31/64"	0.406"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	8:1	19/32"	8	8	Durometer 83D	Not Rated	4	2	—	4537N208	00000

Metric Precision 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, select components that have the same thread direction, size, and number of thread starts.

Flange Nuts—Right-Hand Thread

Manganese Bronze—Manganese bronze nuts have good strength and wear 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	Bolt Circle Dia.	No. of Thread Starts	Travel Distance per Turn, mm	Thread Fit	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	No. of Mounting Holes	Specs. Met		Each
Manganese Bronze



		M10 × 2 mm	5/8"	0.688"	1 39/64"	13/32"	Metric Trapezoidal	1:1	1 1/8"	1	2	Metric Trapezoidal Class 7H	Brinell 126	Not Rated	670	4	DIN 103	7549K16	000000


		M12 × 3 mm	3/4"	1.125"	2 39/64"	17/32"	Metric Trapezoidal	1:1	2 3/32"	1	3	Metric Trapezoidal Class 7H	Brinell 126	Not Rated	1,100	4	DIN 103	7549K17	00000
		M16 × 3 mm	1"	1.125"	2 39/64"	17/32"	Metric Trapezoidal	1:1	2 3/32"	1	3	Metric Trapezoidal Class 7H	Brinell 126	Not Rated	2,000	4	DIN 103	7549K19	00000
		M20 × 4 mm	1 1/4"	1.125"	2 39/64"	17/32"	Metric Trapezoidal	1:1	2 3/32"	1	4	Metric Trapezoidal Class 7H	Brinell 126	Not Rated	3,100	4	DIN 103	7549K22	00000
		M24 × 5 mm	1 1/2"	1.5"	2 3/4"	33/64"	Metric Trapezoidal	1:1	2 17/64"	1	5	Metric Trapezoidal Class 7H	Brinell 126	Not Rated	4,500	4	DIN 103	7549K23	00000
		M28 × 5 mm	1 3/4"	2.125"	4 13/64"	53/64"	Metric Trapezoidal	1:1	3 7/16"	1	5	Metric Trapezoidal Class 7H	Brinell 126	75,000	6,100	4	DIN 103	7549K86	000000
		M40 × 7 mm	2 19/64"	2.125"	4 13/64"	53/64"	Metric Trapezoidal	1:1	3 7/16"	1	7	Metric Trapezoidal Class 7H	Brinell 126	Not Rated	12,300	4	DIN 103	7549K27	000000

Ultra-Precision Lead Screws and Nuts


	Style A	Style B	Style C

Operating with less backlash (play) than Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. 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. All components are corrosion resistant for use in harsh environments. To ensure compatibility, select components that have the same thread type, thread size, and number of thread starts.

Flange Nuts—Right-Hand Thread


Style A	Style B	Style C

Style B

Style C

Acetal—Acetal nuts have good wear and corrosion resistance.

Wear-Compensating Spring—Flange nuts with wear-compensating internal O-ring or wear-compensating spring maintain a tight fit even when their threads begin to wear. They resist backlash to maintain accuracy over time, which is important in positioning applications such as 3D printing and robotics.

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
	Style	Thread Size	Lg.	Dia.	Dia.	Wd.	Ht.	Thk.	Thread Type	Speed Ratio	Bolt Circle Dia.	No. of Thread Starts	Travel Distance per Turn	Mounting Hole Ctr.-to-Ctr.	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	No. of Mounting Holes		Each
Acetal



		A	1/8"-20.8	1/2"	0.4"	—	3/4"	13/32"	1/8"	Rounded Acme	1:1	—	1	0.048"	39/64"	Not Rated	9,000	25	2	6350K682	000000


		A	1/8"-41.7	1/2"	0.4"	—	3/4"	13/32"	1/8"	Rounded Acme	1:1	—	1	0.024"	39/64"	Not Rated	9,000	25	2	6350K681	00000
		A	9/64"-20.8	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	1:1	—	1	0.048"	39/64"	Not Rated	Not Rated	25	2	6642K22	00000
		A	9/64"-41.7	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	1:1	—	1	0.024"	39/64"	Not Rated	Not Rated	25	2	6642K21	00000
		A	7/32"-20.8	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	1:1	—	1	0.048"	39/64"	Not Rated	Not Rated	25	2	6642K24	00000
		B	1/4"-20	1"	0.5"	1"	—	—	3/16"	Rounded Acme	1:1	3/4"	1	0.05"	—	Not Rated	9,700	50	3	6350K171	00000
		B	1/4"-40	1"	0.5"	1"	—	—	3/16"	Rounded Acme	1:1	3/4"	1	0.025"	—	Not Rated	9,000	50	3	6350K683	00000
		B	3/8"-10	1"	0.625"	1 7/64"	—	—	3/16"	Rounded Acme	1:1	7/8"	1	0.1"	—	Not Rated	9,700	75	3	6350K33	00000
		B	3/8"-20	1"	0.625"	1 7/64"	—	—	3/16"	Rounded Acme	1:1	7/8"	1	0.05"	—	Not Rated	9,700	75	3	6350K172	00000
		B	3/8"-40	1"	0.625"	1 7/64"	—	—	3/16"	Rounded Acme	1:1	7/8"	1	0.025"	—	Not Rated	9,700	75	3	6350K175	00000
		B	1/2"-8	1 1/2"	0.75"	1 1/2"	—	—	3/16"	Rounded Acme	1:1	1 1/8"	1	0.125"	—	Not Rated	9,700	150	3	6350K163	00000


		B	1/2"-10	1 1/2"	0.75"	1 1/2"	—	—	3/16"	Rounded Acme	1:1	1 1/8"	1	0.1"	—	Not Rated	9,700	150	3	6350K41	00000
		B	1/2"-20	1 1/2"	0.75"	1 1/2"	—	—	3/16"	Rounded Acme	1:1	1 1/8"	1	0.05"	—	Not Rated	9,700	150	3	6350K173	00000
		B	5/8"-10	1 1/2"	0.875"	1 1/2"	—	—	3/16"	Rounded Acme	1:1	1 3/16"	1	0.1"	—	Not Rated	9,700	220	3	6350K167	00000
		B	3/4"-10	2"	1.125"	1 51/64"	—	—	1/4"	Rounded Acme	1:1	1 7/16"	1	0.1"	—	Not Rated	9,700	350	3	6350K168	00000


		Acetal with Wear-Compensating Internal O-Ring



				A	9/64"-20.8	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	1:1	—	1	0.048"	39/64"	Not Rated	Not Rated	5	2	6642K32	00000


				A	9/64"-41.7	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	1:1	—	1	0.024"	39/64"	Not Rated	Not Rated	5	2	6642K31	00000
				A	7/32"-20.8	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	1:1	—	1	0.048"	39/64"	Not Rated	Not Rated	5	2	6642K34	00000


				Acetal with Wear-Compensating Spring



						B	3/4"-10	2 45/64"	1.563"	2 13/32"	—	—	5/16"	Rounded Acme	1:1	2"	1	0.1"	—	Not Rated	9,700	150	3	6350K206	000000


						C	1/4"-20	1"	0.5"	1"	—	—	3/16"	Rounded Acme	1:1	3/4"	1	0.05"	—	Not Rated	9,700	5	3	6350K208	00000
						C	3/8"-10	1 29/32"	0.703"	1 1/2"	—	—	3/16"	Rounded Acme	1:1	1 1/8"	1	0.1"	—	Not Rated	9,700	10	3	6350K53	00000
						C	3/8"-20	1 29/32"	0.703"	1 1/2"	—	—	3/16"	Rounded Acme	1:1	1 1/8"	1	0.05"	—	Not Rated	9,700	10	3	6350K209	00000
						C	3/8"-40	1 29/32"	0.703"	1 1/2"	—	—	3/16"	Rounded Acme	1:1	1 1/8"	1	0.025"	—	Not Rated	9,700	10	3	6350K213	00000
						C	1/2"-8	2"	0.891"	1 39/64"	—	—	17/64"	Rounded Acme	1:1	1 1/4"	1	0.125"	—	Not Rated	9,700	25	3	6350K201	00000
						C	1/2"-10	2"	0.891"	1 39/64"	—	—	17/64"	Rounded Acme	1:1	1 1/4"	1	0.1"	—	Not Rated	9,700	25	3	6350K61	00000
						C	1/2"-20	2"	0.891"	1 39/64"	—	—	17/64"	Rounded Acme	1:1	1 1/4"	1	0.05"	—	Not Rated	9,700	25	3	6350K211	00000
						C	5/8"-10	2"	1.063"	1 51/64"	—	—	17/64"	Rounded Acme	1:1	1 3/8"	1	0.1"	—	Not Rated	9,700	35	3	6350K205	00000

Fast-Travel Ultra-Precision Lead Screws and Nuts


	Style A	Style B	Style C

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. All components are corrosion resistant for use in harsh environments. To ensure compatibility, select components that have the same thread type, thread size, and number of thread starts.

Flange Nuts—Right-Hand Thread


Style A	Style B	Style C

Style B

Style C

Acetal—Acetal nuts have good wear and corrosion resistance.

Wear-Compensating Internal O-Ring and Wear-Compensating Spring—Flange nuts with wear-compensating internal O-ring or wear-compensating spring maintain a tight fit even when their threads begin to wear. They resist backlash to maintain accuracy over time, which is important in positioning applications such as 3D printing and robotics.

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
	Style	Thread Size	Lg.	Dia.	Dia.	Wd.	Ht.	Thk.	Thread Type	Speed Ratio	Bolt Circle Dia.	No. of Thread Starts	Travel Distance per Turn	Mounting Hole Ctr.-to-Ctr.	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	No. of Mounting Holes		Each
Acetal



		A	9/64"-20.8	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	2:1	—	2	0.096"	39/64"	Not Rated	Not Rated	25	2	6642K23	000000


		A	5/32"-21.3	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	2:1	—	2	0.094"	39/64"	Not Rated	Not Rated	25	2	6642K25	00000
		A	3/16"-42.7	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	16:1	—	16	0.375"	39/64"	Not Rated	Not Rated	25	2	6642K57	00000
		A	7/32"-20.8	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	4:1	—	4	0.192"	39/64"	Not Rated	Not Rated	25	2	6642K26	00000
		B	1/4"-8	1"	0.5"	1"	—	—	3/16"	Rounded Acme	8:1	3/4"	8	1"	—	Not Rated	9,700	50	3	6350K32	00000
		B	1/4"-16	1"	0.5"	1"	—	—	3/16"	Rounded Acme	4:1	3/4"	4	0.25"	—	Not Rated	9,700	50	3	6350K31	00000
		B	1/4"-20	1"	0.5"	1"	—	—	3/16"	Rounded Acme	2:1	3/4"	2	0.1"	—	Not Rated	9,700	50	3	6350K166	00000
		B	3/8"-5	1"	0.625"	1 7/64"	—	—	3/16"	Rounded Acme	5:1	7/8"	5	1"	—	Not Rated	9,700	75	3	6350K36	00000
		B	3/8"-8	1"	0.625"	1 7/64"	—	—	3/16"	Rounded Acme	4:1	7/8"	4	0.5"	—	Not Rated	9,700	75	3	6350K35	00000
		B	3/8"-10	1"	0.625"	1 7/64"	—	—	3/16"	Rounded Acme	2:1	7/8"	2	0.2"	—	Not Rated	9,700	75	3	6350K34	00000
		B	3/8"-12	1"	0.625"	1 7/64"	—	—	3/16"	Rounded Acme	3:1	7/8"	3	0.25"	—	Not Rated	9,700	75	3	6350K151	00000


		B	1/2"-8	1 1/2"	0.75"	1 1/2"	—	—	3/16"	Rounded Acme	2:1	1 1/8"	2	0.25"	—	Not Rated	9,700	150	3	6350K153	00000
		B	1/2"-8	1 1/2"	0.75"	1 1/2"	—	—	3/16"	Rounded Acme	4:1	1 1/8"	4	0.5"	—	Not Rated	9,700	150	3	6350K43	00000
		B	1/2"-8	1 1/2"	0.75"	1 1/2"	—	—	3/16"	Rounded Acme	8:1	1 1/8"	8	1"	—	Not Rated	9,700	150	3	6350K44	00000
		B	1/2"-10	1 1/2"	0.75"	1 1/2"	—	—	3/16"	Rounded Acme	2:1	1 1/8"	2	0.2"	—	Not Rated	9,700	150	3	6350K42	00000
		B	5/8"-6	1 1/2"	0.875"	1 1/2"	—	—	3/16"	Rounded Acme	12:1	1 3/16"	12	2"	—	Not Rated	9,700	220	3	6350K139	00000
		B	5/8"-8	1 1/2"	0.875"	1 1/2"	—	—	3/16"	Rounded Acme	4:1	1 3/16"	4	0.5"	—	Not Rated	9,700	220	3	6350K145	00000
		B	3/4"-8	2"	1.125"	1 3/4"	—	—	1/4"	Rounded Acme	8:1	1 7/16"	8	1"	—	Not Rated	9,000	350	3	6350K684	00000
		B	3/4"-8	2"	1.125"	1 51/64"	—	—	1/4"	Rounded Acme	2:1	1 7/16"	2	0.25"	—	Not Rated	9,700	350	3	6350K45	00000


		Acetal with Wear-Compensating Internal O-Ring



				A	9/64"-20.8	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	2:1	—	2	0.096"	39/64"	Not Rated	Not Rated	5	2	6642K33	00000


				A	5/32"-21.3	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	2:1	—	2	0.094"	39/64"	Not Rated	Not Rated	5	2	6642K35	00000
				A	3/16"-42.7	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	16:1	—	16	0.375"	39/64"	Not Rated	Not Rated	5	2	6642K67	00000
				A	7/32"-20.8	1/2"	0.406"	—	3/4"	13/32"	1/8"	Rounded Acme	4:1	—	4	0.192"	39/64"	Not Rated	Not Rated	5	2	6642K36	00000


				Acetal with Wear-Compensating Spring



						B	3/4"-8	2 45/64"	1.563"	2 13/32"	—	—	5/16"	Rounded Acme	2:1	2"	2	0.25"	—	Not Rated	9,700	150	3	6350K65	000000


						C	1/4"-8	1"	0.5"	1"	—	—	3/16"	Rounded Acme	8:1	3/4"	8	1"	—	Not Rated	9,700	5	3	6350K52	00000
						C	1/4"-16	1"	0.5"	1"	—	—	3/16"	Rounded Acme	4:1	3/4"	4	0.25"	—	Not Rated	9,700	5	3	6350K51	00000
						C	1/4"-20	1"	0.5"	1"	—	—	3/16"	Rounded Acme	2:1	3/4"	2	0.1"	—	Not Rated	9,700	5	3	6350K204	00000
						C	3/8"-5	1 29/32"	0.703"	1 1/2"	—	—	3/16"	Rounded Acme	5:1	1 1/8"	5	1"	—	Not Rated	9,700	10	3	6350K56	00000
						C	3/8"-8	1 29/32"	0.703"	1 1/2"	—	—	3/16"	Rounded Acme	4:1	1 1/8"	4	0.5"	—	Not Rated	9,700	10	3	6350K55	00000
						C	3/8"-10	1 29/32"	0.703"	1 1/2"	—	—	3/16"	Rounded Acme	2:1	1 1/8"	2	0.2"	—	Not Rated	9,700	10	3	6350K54	00000
						C	3/8"-12	1 29/32"	0.703"	1 1/2"	—	—	3/16"	Rounded Acme	3:1	1 1/8"	3	0.25"	—	Not Rated	9,700	10	3	6350K188	00000
						C	1/2"-8	2"	0.891"	1 39/64"	—	—	17/64"	Rounded Acme	2:1	1 1/4"	2	0.25"	—	Not Rated	9,700	25	3	6350K191	00000
						C	1/2"-8	2"	0.891"	1 39/64"	—	—	17/64"	Rounded Acme	4:1	1 1/4"	4	0.5"	—	Not Rated	9,700	25	3	6350K63	00000
						C	1/2"-8	2"	0.891"	1 39/64"	—	—	17/64"	Rounded Acme	8:1	1 1/4"	8	1"	—	Not Rated	9,700	25	3	6350K64	00000


						C	1/2"-10	2"	0.891"	1 39/64"	—	—	17/64"	Rounded Acme	2:1	1 1/4"	2	0.2"	—	Not Rated	9,700	25	3	6350K62	00000
						C	5/8"-6	2"	1.063"	1 51/64"	—	—	17/64"	Rounded Acme	12:1	1 3/8"	12	2"	—	Not Rated	9,700	35	3	6350K177	00000
						C	5/8"-8	2"	1.063"	1 51/64"	—	—	17/64"	Rounded Acme	4:1	1 3/8"	4	0.5"	—	Not Rated	9,700	35	3	6350K183	00000

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.

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



		1/2"-10	1 3/4"	1"	2"	3/8"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	35,000	1,200	97790A110	0000000


		3/4"-5	2 1/4"	1.375"	2 5/8"	9/16"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 65	35,000	2,800	97790A120	000000
		3/4"-6	2 1/4"	1.375"	2 5/8"	9/16"	Acme	1:1	1	0.167"	Acme Class 2C	Brinell 65	35,000	2,800	97790A130	000000
		3/4"-10	2 1/4"	1.375"	2 5/8"	9/16"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	35,000	2,800	97790A140	000000
		1"-4	3"	1.625"	3"	5/8"	Acme	1:1	1	0.25"	Acme Class 2C	Brinell 65	35,000	5,000	97790A150	000000
		1"-5	3"	1.625"	3"	5/8"	Acme	1:1	1	0.2"	Acme Class 2C	Brinell 65	35,000	5,000	97790A160	000000
		1"-10	3"	1.625"	3"	5/8"	Acme	1:1	1	0.1"	Acme Class 2C	Brinell 65	35,000	5,000	97790A170	000000
		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	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.

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



		3/8"-12	Acme	7/8"	1/2"	1"	1/8"	1	1:1	0.083"	Acme Class 2G	Not Rated	Not Rated	95120A592	0000000


		1/2"-10	Acme	1"	3/4"	1 1/4"	1/8"	1	1:1	0.1"	Acme Class 2G	Not Rated	Not Rated	95120A111	000000
		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	95120A119	000000
		3/4"-5	Acme	1 1/2"	1"	2"	3/8"	1	1:1	0.2"	Acme Class 2G	Not Rated	Not Rated	95120A123	000000
		3/4"-6	Acme	1 1/2"	1"	2"	3/8"	1	1:1	0.167"	Acme Class 2G	Not Rated	Not Rated	95120A127	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	95120A143	000000
		1"-4	Acme	2"	1 1/2"	2 1/2"	1/2"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	95120A593	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	95120A151	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	95120A155	000000
		1"-10	Acme	2"	1 1/2"	2 1/2"	1/2"	1	1:1	0.1"	Acme Class 2G	Not Rated	Not Rated	95120A594	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	95120A167	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	95120A171	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	95120A175	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	95120A183	000000
		2"-4	Acme	4"	3"	4"	1"	1	1:1	0.25"	Acme Class 2G	Not Rated	Not Rated	95120A191	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

Ball Screws and Nuts

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 with Flange Ball Nut—Right-Hand Threaded

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

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.

		Ball Screw			Flange Ball Nut, mm
	Thread Size	Lg., mm	Root Dia., mm	Tensile Strength, psi	Lg.	Dia.	Lg. Tolerance Type	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash, mm	Temp. Range, ° F		Each
Carbon Steel Ball Screw with Alloy Steel Flange Ball Nut



		M6	150	5.3	21,000	21	13	Plus	1	1	±0.210 mm/300 mm	Rockwell C58	150	0.05	5 to 175	6624K66	0000000


		M6	250	5.3	21,000	21	13	Plus	1	1	±0.210 mm/300 mm	Rockwell C58	150	0.05	5 to 175	6638K1	000000
		M8	150	6.6	21,000	28	20	Plus	1	2	±0.210 mm/300 mm	Rockwell C58	470	0.05	5 to 175	6624K67	000000
		M8	250	6.6	21,000	28	20	Plus	1	2	±0.210 mm/300 mm	Rockwell C58	470	0.05	5 to 175	6638K3	000000
		M10	200	8.6	21,000	28	23	Plus	1	2	±0.210 mm/300 mm	Rockwell C58	510	0.05	5 to 175	6624K68	000000
		M10	300	8.6	21,000	28	23	Plus	1	2	±0.210 mm/300 mm	Rockwell C58	510	0.05	5 to 175	6638K7	000000
		M12	200	10.6	21,000	30	25	Plus	1	2	±0.210 mm/300 mm	Rockwell C58	560	0.05	5 to 175	6638K9	000000
		M12	300	10.6	21,000	30	25	Plus	1	2	±0.210 mm/300 mm	Rockwell C58	560	0.05	5 to 175	6638K11	000000

Metric Ultra-Precision Lead Screws and Nuts


Style C	Style D

Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. 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, select components that have the same thread size, thread type, thread size, thread pitch, and number of thread starts.

Flange Nuts—Right-Hand Thread


Style C	Style D

Style C

Style D

Acetal—Acetal nuts have good wear and corrosion resistance.

Wear-Compensating Internal O-Ring—Flange nuts with wear-compensating internal O-ring maintain a tight fit even when their threads begin to wear. They resist backlash to maintain accuracy over time, which is important in positioning applications such as 3D printing and robotics.

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
	Style	Thread Size	Lg.	Dia.	Dia.	Wd.	Ht.	Thk.	Thread Type	Speed Ratio	Bolt Circle Dia.	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	No. of Mounting Holes	Temp., ° F		Each
Acetal



		C	M2 × 0.5 mm	1/2"	0.297"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	1:1	39/64"	1	0.5	Not Rated	8,000	10	2	-40 to 185	7549K62	000000


		C	M4 × 0.3 mm	1/2"	0.297"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	1:1	39/64"	1	0.3	Not Rated	8,000	25	2	-40 to 185	7549K63	00000
		D	M8 × 1.5 mm	3/4"	0.548"	1 1/8"	—	—	3/16"	Metric Rounded Trapezoidal	1:1	7/8"	1	1.5	Not Rated	8,000	75	3	-40 to 185	7549K64	00000


		PEEK



				C	M2 × 0.4 mm	9/32"	0.209"	—	15/32"	15/64"	5/64"	Metric Rounded Trapezoidal	1:1	11/32"	1	0.375	Durometer 83D	Not Rated	2	2	—	90500A250	00000


				C	M3 × 0.5 mm	21/64"	0.295"	—	39/64"	5/16"	3/32"	Metric Rounded Trapezoidal	1:1	15/32"	1	0.5	Durometer 83D	Not Rated	5	2	—	90500A260	00000
				C	M4 × 1 mm	13/32"	0.354"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	1:1	19/32"	1	1	Durometer 83D	Not Rated	10	2	—	90500A270	00000


				PEEK with Wear-Compensating Internal O-Ring



						C	M2 × 0.4 mm	5/16"	0.228"	—	15/32"	15/64"	5/64"	Metric Rounded Trapezoidal	1:1	11/32"	1	0.375	Durometer 83D	Not Rated	1	2	—	90500A280	000000


						C	M3 × 0.5 mm	25/64"	0.315"	—	39/64"	5/16"	3/32"	Metric Rounded Trapezoidal	1:1	15/32"	1	0.5	Durometer 83D	Not Rated	2	2	—	90500A290	000000
						C	M4 × 1 mm	31/64"	0.406"	—	3/4"	13/32"	1/8"	Metric Rounded Trapezoidal	1:1	19/32"	1	1	Durometer 83D	Not Rated	5	2	—	90500A310	000000

Metric Lead Screws and Nuts

Flange Nuts—Right-Hand Thread

Flange nuts move objects along the length of a lead screw. They 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 moves with one revolution of the lead screw.

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



		M10 × 2 mm	Metric Trapezoidal	35	28	48	12	1	1:1	2	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A321	0000000


		M12 × 3 mm	Metric Trapezoidal	35	28	48	12	1	1:1	3	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A322	00000
		M16 × 4 mm	Metric Trapezoidal	35	28	48	12	1	1:1	4	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A323	00000
		M20 × 4 mm	Metric Trapezoidal	44	32	55	12	1	1:1	4	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A324	00000
		M26 × 5 mm	Metric Trapezoidal	46	38	62	14	1	1:1	5	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A325	000000
		M40 × 7 mm	Metric Trapezoidal	66	63	98	16	1	1:1	7	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A326	000000