Plastic Acme Nuts | McMaster-Carr

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212 Products

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

Metric Fast-Travel Ultra-Precision Lead Screws and Nuts

Image of ProductInUse. Front orientation. Contains Inset. Precision Lead Screws and Nuts. Metric Fast-Travel Ultra-Precision Lead Screws and Nuts.


Style A	Style B	Style C	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.

Round Nuts—Right-Hand Thread

Style A

Acetal—Acetal nuts have good wear and 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.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap.	Temp., ° F		Each
Acetal



	A	M8 × 2.5 mm	15/32"	0.709"	Metric Rounded Trapezoidal	4:1	4	10	Durometer 74D	10,000	Not Rated	-40 to 185	2391N17	000000


	A	M10 × 3 mm	25/32"	0.866"	Metric Rounded Trapezoidal	4:1	4	12	Durometer 74D	10,000	Not Rated	-40 to 185	2391N18	00000
	A	M12 × 2.5 mm	15/16"	1.024"	Metric Rounded Trapezoidal	2:1	2	5	Durometer 74D	10,000	Not Rated	-40 to 185	2391N19	00000
	A	M16 × 5 mm	1 17/64"	1.417"	Metric Rounded Trapezoidal	7:1	7	35	Durometer 74D	10,000	Not Rated	-40 to 185	2391N21	00000
	A	M20 × 5 mm	1 37/64"	1.772"	Metric Rounded Trapezoidal	4:1	4	20	Durometer 74D	10,000	Not Rated	-40 to 185	2391N22	00000
	A	M20 × 7.5 mm	1 37/64"	1.772"	Metric Rounded Trapezoidal	8:1	8	60	Durometer 74D	10,000	Not Rated	-40 to 185	2391N23	00000

Externally Threaded Nuts—Right-Hand Thread


Style B	Style C

Acetal—Acetal nuts have good wear and 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
	Style	Thread Size	Lg.	Wd.	Ht.	Dia.	Hex Wd.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Size	Lg.	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	Temp., ° F		Each
Acetal



		B	M2 × 0.5 mm	11/16"	—	—	0.297"	7/16"	Metric Rounded Trapezoidal	2:1	2	1	3/8"-24	3/16"	Not Rated	8,000	10	-40 to 185	97783A190	000000


		B	M4 × 1.25 mm	11/16"	—	—	0.297"	7/16"	Metric Rounded Trapezoidal	8:1	8	10	3/8"-24	3/16"	Not Rated	8,000	25	-40 to 185	97783A210	00000
		B	M5 × 1.25 mm	11/16"	—	—	0.297"	7/16"	Metric Rounded Trapezoidal	4:1	4	5	3/8"-24	3/16"	Not Rated	8,000	25	-40 to 185	97783A220	00000
		B	M8 × 2 mm	1"	—	—	0.548"	11/16"	Metric Rounded Trapezoidal	2:1	2	4	5/8"-18	1/4"	Not Rated	8,000	75	-40 to 185	97783A230	00000


		PEEK



				C	M2 × 0.4 mm	5/16"	0.22"	0.197"	—	—	Metric Rounded Trapezoidal	2:1	2	0.75	M5 × 0.8 mm	9/64"	Durometer 83D	Not Rated	2	—	4537N161	00000


				C	M2 × 0.4 mm	5/16"	0.22"	0.197"	—	—	Metric Rounded Trapezoidal	4:1	4	1.5	M5 × 0.8 mm	9/64"	Durometer 83D	Not Rated	2	—	4537N162	00000
				C	M2 × 0.4 mm	5/16"	0.22"	0.197"	—	—	Metric Rounded Trapezoidal	8:1	8	3	M5 × 0.8 mm	9/64"	Durometer 83D	Not Rated	2	—	4537N163	00000
				C	M3 × 0.5 mm	13/32"	0.311"	0.276"	—	—	Metric Rounded Trapezoidal	2:1	2	1	M7 × 0.75 mm	5/32"	Durometer 83D	Not Rated	4	—	4537N164	00000
				C	M3 × 0.5 mm	13/32"	0.311"	0.276"	—	—	Metric Rounded Trapezoidal	6:1	6	3	M7 × 0.75 mm	5/32"	Durometer 83D	Not Rated	4	—	4537N165	00000
				C	M4 × 1 mm	1/2"	0.402"	0.354"	—	—	Metric Rounded Trapezoidal	4:1	4	4	M9 × 1 mm	13/64"	Durometer 83D	Not Rated	4	—	4537N166	00000
				C	M4 × 1 mm	1/2"	0.402"	0.354"	—	—	Metric Rounded Trapezoidal	8:1	8	8	M9 × 1 mm	13/64"	Durometer 83D	Not Rated	10	—	4537N167	00000

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

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

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.

	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	Temp., ° F		Each
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	1349K134	000000


	3/8"-10	3/4"	1.344"	Acme	1:1	1	0.1"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	1349K138	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	1349K149	00000
	3/8"-16	3/4"	1.344"	Acme	1:1	1	0.063"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	1349K39	00000
	1/2"-10	1"	1.465"	Acme	1:1	1	0.1"	Acme Class 2C	Not Rated	Not Rated	650	15 to 175	1349K141	00000
	5/8"-5	1 1/4"	1.859"	Acme	1:1	1	0.2"	Acme Class 2C	Not Rated	Not Rated	1,000	15 to 175	1349K23	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	1349K136	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	1349K143	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	1349K121	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	1349K129	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	1349K145	000000


	PEEK



			1/2"-10	1"	1.5"	Acme	1:1	1	0.1"	Acme Class 2C	Not Rated	16,000	5,650	-40 to 525	90493A250	000000

Round Nuts—Left-Hand Thread

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.

	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
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	000000


	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—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.

Acetal—Acetal nuts have good wear and 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
Acetal



		3/4"-8	1 1/4"	1.125"	Acme	1:1	1	0.125"	1"-18	1/2"	Acme Class 2C	Rockwell R120	8,000	1,400	-40 to 190	90493A110	000000


		3/4"-16	1 1/4"	1.125"	Acme	1:1	1	0.063"	1"-18	1/2"	Acme Class 2C	Rockwell R120	8,000	1,400	-40 to 190	90493A120	00000
		1"-8	1 1/2"	1.5"	Acme	1:1	1	0.125"	1 3/8"-16	1/2"	Acme Class 2C	Rockwell R120	8,000	2,500	-40 to 190	90493A130	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	Rockwell R120	8,000	5,600	-40 to 190	90493A140	000000


		PET



				1/4"-16	5/8"	0.688"	Acme	1:1	1	0.063"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	160	15 to 175	95075A210	00000


				1/4"-20	5/8"	0.688"	Acme	1:1	1	0.05"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	160	15 to 175	95075A340	00000
				3/8"-8	5/8"	0.688"	Acme	1:1	1	0.125"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A224	00000
				3/8"-10	5/8"	0.688"	Acme	1:1	1	0.1"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A227	00000
				3/8"-12	5/8"	0.688"	Acme	1:1	1	0.083"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A104	00000
				3/8"-16	5/8"	0.688"	Acme	1:1	1	0.063"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A229	00000
				1/2"-10	3/4"	1.125"	Acme	1:1	1	0.1"	15/16"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	650	15 to 175	95075A106	00000
				5/8"-8	1"	1.125"	Acme	1:1	1	0.125"	15/16"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	1,000	15 to 175	95075A109	00000
				5/8"-10	1"	1.125"	Acme	1:1	1	0.1"	15/16"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	1,000	15 to 175	95075A249	00000
				3/4"-5	1 1/4"	1.125"	Acme	1:1	1	0.2"	1"-18	1/2"	Acme Class 2C	Not Rated	Not Rated	1,450	15 to 175	95075A112	00000
				3/4"-6	1 1/4"	1.125"	Acme	1:1	1	0.167"	1"-18	1/2"	Acme Class 2C	Not Rated	Not Rated	1,450	15 to 175	95075A113	00000


				3/4"-10	1 1/4"	1.125"	Acme	1:1	1	0.1"	1"-18	1/2"	Acme Class 2C	Not Rated	Not Rated	1,450	15 to 175	95075A114	00000
				1"-4	1 1/2"	1.5"	Acme	1:1	1	0.25"	1 3/8"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	2,500	15 to 175	95075A118	00000
				1"-5	1 1/2"	1.5"	Acme	1:1	1	0.2"	1 3/8"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	2,500	15 to 175	95075A119	00000
				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
				1"-10	1 1/2"	1.5"	Acme	1:1	1	0.1"	1 3/8"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	2,500	15 to 175	95075A121	00000
				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
				1 1/2"-4	2 19/64"	2.125"	Acme	1:1	1	0.25"	1 31/32"-18	13/16"	Acme Class 2C	Not Rated	Not Rated	6,000	15 to 175	95075A219	000000
				2"-4	3 15/32"	2.75"	Acme	1:1	1	0.25"	2 35/64"-18	7/8"	Acme Class 2C	Not Rated	Not Rated	10,000	15 to 175	95075A222	000000


				PEEK



						1/4"-20	5/8"	0.688"	Acme	1:1	1	0.05"	9/16"-18	3/8"	Acme Class 2C	Not Rated	16,000	150	-40 to 525	90493A150	000000


						1/2"-10	3/4"	1.125"	Acme	1:1	1	0.1"	15/16"-16	1/2"	Acme Class 2C	Not Rated	16,000	620	-40 to 525	90493A160	000000
						3/4"-5	1 1/4"	1.125"	Acme	1:1	1	0.2"	1"-18	1/2"	Acme Class 2C	Not Rated	16,000	1,400	-40 to 525	90493A170	000000
						3/4"-6	1 1/4"	1.125"	Acme	1:1	1	0.166"	1"-18	1/2"	Acme Class 2C	Not Rated	16,000	1,400	-40 to 525	90493A180	000000
						3/4"-10	1 1/4"	1.125"	Acme	1:1	1	0.1"	1"-18	1/2"	Acme Class 2C	Not Rated	16,000	1,400	-40 to 525	90493A190	000000
						1"-4	1 1/2"	1.5"	Acme	1:1	1	0.25"	1 3/8"-16	1/2"	Acme Class 2C	Not Rated	16,000	2,500	-40 to 525	90493A210	000000
						1"-5	1 1/2"	1.5"	Acme	1:1	1	0.2"	1 3/8"-16	1/2"	Acme Class 2C	Not Rated	16,000	2,500	-40 to 525	90493A220	000000
						1"-10	1 1/2"	1.5"	Acme	1:1	1	0.1"	1 3/8"-16	1/2"	Acme Class 2C	Not Rated	16,000	2,500	-40 to 525	90493A230	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	Not Rated	16,000	3,900	-40 to 525	90493A240	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

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

Metric Ultra-Precision Lead Screws and Nuts


	Style A	Style B	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.

Externally Threaded Nuts—Right-Hand Thread


Style A	Style B

Acetal—Acetal nuts have good wear and 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
	Style	Thread Size	Lg.	Wd.	Ht.	Dia.	Hex Wd.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Size	Lg.	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	Temp., ° F		Each
Acetal



		A	M2 × 0.5 mm	11/16"	—	—	0.297"	7/16"	Metric Rounded Trapezoidal	1:1	1	0.5	3/8"-24	3/16"	Not Rated	8,000	10	-40 to 185	7549K58	000000


		A	M4 × 0.3 mm	11/16"	—	—	0.297"	7/16"	Metric Rounded Trapezoidal	1:1	1	0.3	3/8"-24	3/16"	Not Rated	8,000	25	-40 to 185	7549K59	00000
		A	M8 × 1.5 mm	1"	—	—	0.548"	11/16"	Metric Rounded Trapezoidal	1:1	1	1.5	5/8"-18	1/4"	Not Rated	8,000	75	-40 to 185	7549K61	00000


		PEEK



				B	M2 × 0.4 mm	5/16"	0.22"	0.197"	—	—	Metric Rounded Trapezoidal	1:1	1	0.375	M5 × 0.8 mm	9/64"	Durometer 83D	Not Rated	2	—	90500A220	00000


				B	M3 × 0.5 mm	13/32"	0.311"	0.276"	—	—	Metric Rounded Trapezoidal	1:1	1	0.5	M7 × 0.75 mm	5/32"	Durometer 83D	Not Rated	5	—	90500A230	00000
				B	M4 × 1 mm	1/2"	0.402"	0.354"	—	—	Metric Rounded Trapezoidal	1:1	1	1	M9 × 1 mm	13/64"	Durometer 83D	Not Rated	10	—	90500A240	00000

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

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.

Round Nuts—Right-Hand Thread

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.

	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
PET



	1/4"-12	3/4"	1.344"	Acme	4:1	4	0.333"	Acme Class 2C	Not Rated	Not Rated	160	15 to 175	1349K105	000000


	3/8"-8	3/4"	1.344"	Acme	2:1	2	0.25"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	1349K107	00000
	3/8"-8	3/4"	1.344"	Acme	4:1	4	0.5"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	1349K101	00000
	3/8"-10	3/4"	1.344"	Acme	2:1	2	0.2"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	1349K118	00000
	1/2"-8	1"	1.469"	Acme	2:1	2	0.25"	Acme Class 2C	Not Rated	Not Rated	650	15 to 175	1349K15	00000
	1/2"-10	1"	1.469"	Acme	2:1	2	0.2"	Acme Class 2C	Not Rated	Not Rated	650	15 to 175	1349K22	00000
	1/2"-10	1"	1.469"	Acme	5:1	5	0.5"	Acme Class 2C	Not Rated	Not Rated	650	15 to 175	1349K103	00000

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.

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
PET



		1/4"-12	5/8"	0.688"	Acme	4:1	4	0.333"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	160	15 to 175	95075A207	000000


		3/8"-5	5/8"	0.688"	Acme	5:1	5	1"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	250	15 to 175	95075A101	00000
		3/8"-8	5/8"	0.688"	Acme	2:1	2	0.25"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A226	00000
		3/8"-8	5/8"	0.688"	Acme	4:1	4	0.5"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A225	00000
		3/8"-10	5/8"	0.688"	Acme	2:1	2	0.2"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A228	00000
		1/2"-8	3/4"	1.125"	Acme	2:1	2	0.25"	15/16"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	650	15 to 175	95075A105	00000
		1/2"-10	3/4"	1.125"	Acme	2:1	2	0.2"	15/16"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	650	15 to 175	95075A247	00000
		1/2"-10	3/4"	1.125"	Acme	5:1	5	0.5"	15/16"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	650	15 to 175	95075A245	00000
		3/4"-8	1 1/4"	1.125"	Acme	4:1	4	0.5"	1"-18	1/2"	Acme Class 2C	Not Rated	Not Rated	1,450	15 to 175	95075A230	00000
		1"-4	1 1/2"	1.5"	Acme	2:1	2	0.5"	1 3/8"-16	1/2"	Acme Class 2C	Not Rated	Not Rated	2,500	15 to 175	95075A260	00000

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


	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

High-Capacity Press-Fit Leveling Mount Inserts

Rated for high load capacity, use these inserts to connect threaded leveling mounts to machinery, instrument bases, and conveyor equipment with tubular legs. These inserts have pass-through holes that are partially threaded at the base. Tap mounts into place with a rubber hammer.

For Square Legs


Shown with Brass Insert Installed

Plastic with Brass Insert—Move equipment around your workspace and make frequent adjustments without worrying about stripping the brass threads.

	For Leg						Thread
	Outer Lg.	Outer Wd.	Inner Lg.	Inner Wd.	Cap. per Mount, lb.	Overall Ht.	Size	Type	Dp.	Temp., ° F		Each
Plastic with Brass Insert



		1 1/2"	1 1/2"	1 1/4"	1 1/4"	1,500	1 3/4"	3/8"-12	Acme	1 1/4"	-20 to 180	60945K36	00000


		1 1/2"	1 1/2"	1 1/4"	1 1/4"	1,500	1 3/4"	1/2"-10	Acme	1 1/4"	-20 to 180	60945K37	0000
		2"	2"	1 3/4"	1 3/4"	2,000	2"	3/8"-12	Acme	1"	-20 to 180	60945K38	0000
		2"	2"	1 3/4"	1 3/4"	2,000	2"	1/2"-10	Acme	1"	-20 to 180	60945K39	0000