Metric Acme Rods | McMaster-Carr

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200 Products

Metric 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, size, and number of thread starts. Class 7e and 7H components are compatible.

Lead Screws—Right-Hand Thread

Black-Oxide Carbon Steel—Black-oxide carbon steel components have mild corrosion resistance.

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

	Thread Type	Lg., mm	No. of Thread Starts	Speed Ratio	Travel Distance per Turn, mm	Thread Fit	Fastener Strength Grade/Class	Hardness	Tensile Strength	Specs. Met		Each
Black-Oxide Carbon Steel



	M10 × 2 mm	Metric Trapezoidal	500	1	1:1	2	Metric Trapezoidal Class 7e	SAE Grade 2	Not Rated	Not Rated	ASTM A108, ASTM A193, DIN 103	97048A751	000000


	M10 × 2 mm	Metric Trapezoidal	1,000	1	1:1	2	Metric Trapezoidal Class 7e	SAE Grade 2	Not Rated	Not Rated	ASTM A108, ASTM A193, DIN 103	97048A752	00000
	M12 × 3 mm	Metric Trapezoidal	500	1	1:1	3	Metric Trapezoidal Class 7e	SAE Grade 2	Not Rated	Not Rated	ASTM A108, ASTM A193, DIN 103	97048A741	00000
	M12 × 3 mm	Metric Trapezoidal	1,000	1	1:1	3	Metric Trapezoidal Class 7e	SAE Grade 2	Not Rated	Not Rated	ASTM A108, ASTM A193, DIN 103	97048A742	00000
	M12 × 3 mm	Metric Trapezoidal	2,000	1	1:1	3	Metric Trapezoidal Class 7e	SAE Grade 2	Rockwell B72	Not Rated	ASTM A108	97048A711	00000
	M16 × 4 mm	Metric Trapezoidal	500	1	1:1	4	Metric Trapezoidal Class 7e	SAE Grade 2	Not Rated	Not Rated	ASTM A108, ASTM A193, DIN 103	97048A743	00000
	M16 × 4 mm	Metric Trapezoidal	1,000	1	1:1	4	Metric Trapezoidal Class 7e	SAE Grade 2	Not Rated	Not Rated	ASTM A108, ASTM A193, DIN 103	97048A744	00000
	M16 × 4 mm	Metric Trapezoidal	2,000	1	1:1	4	Metric Trapezoidal Class 7e	SAE Grade 2	Rockwell B72	Not Rated	ASTM A108	97048A715	000000
	M20 × 4 mm	Metric Trapezoidal	1,000	1	1:1	4	Metric Trapezoidal Class 7e	SAE Grade 2	Not Rated	Not Rated	ASTM A108, ASTM A193, DIN 103	97048A745	000000
	M20 × 4 mm	Metric Trapezoidal	2,000	1	1:1	4	Metric Trapezoidal Class 7e	SAE Grade 2	Rockwell B72	Not Rated	ASTM A108	97048A719	000000
	M26 × 5 mm	Metric Trapezoidal	1,000	1	1:1	5	Metric Trapezoidal Class 7e	SAE Grade 2	Not Rated	Not Rated	ASTM A108, ASTM A193, DIN 103	97048A746	000000


	M26 × 5 mm	Metric Trapezoidal	2,000	1	1:1	5	Metric Trapezoidal Class 7e	SAE Grade 2	Rockwell B72	Not Rated	ASTM A108	97048A725	000000
	M40 × 7 mm	Metric Trapezoidal	1,000	1	1:1	7	Metric Trapezoidal Class 7e	SAE Grade 2	Not Rated	Not Rated	ASTM A108, ASTM A193, DIN 103	97048A747	000000
	M40 × 7 mm	Metric Trapezoidal	2,000	1	1:1	7	Metric Trapezoidal Class 7e	SAE Grade 2	Rockwell B72	Not Rated	ASTM A108	97048A739	000000

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

Hex Nuts—Right-Hand Thread

Hex nuts fasten and position lead screw components.

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



	M12 × 3 mm	Metric Trapezoidal	12	22.2	1	1:1	3	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A120	000000


	M16 × 4 mm	Metric Trapezoidal	16	27	1	1:1	4	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A160	00000
	M20 × 4 mm	Metric Trapezoidal	20	31.75	1	1:1	4	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A200	00000
	M26 × 5 mm	Metric Trapezoidal	25.4	41.3	1	1:1	5	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A260	00000
	M40 × 7 mm	Metric Trapezoidal	39.9	60.33	1	1:1	7	Metric Trapezoidal Class 7H	SAE Grade 2	Not Rated	Not Rated	94353A400	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 moves with one revolution of the lead screw.

	Thread Type	Ht., mm	Wd., mm	No. of Thread Starts	Speed Ratio	Travel Distance per Turn, mm	Thread Fit	Hardness	Tensile Strength		Each
360 Brass



	M10 × 2 mm	Metric Trapezoidal	20	19	1	1:1	2	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A311	000000


	M12 × 3 mm	Metric Trapezoidal	25	25	1	1:1	3	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A312	00000
	M16 × 4 mm	Metric Trapezoidal	35	28	1	1:1	4	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A313	00000
	M20 × 4 mm	Metric Trapezoidal	50	38	1	1:1	4	Metric Trapezoidal Class 7H	Not Rated	Not Rated	94353A314	000000

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.

Lead Screw—Right-Hand Thread

4140 Alloy Steel—Alloy steel lead screws are hard and strong.

303 Stainless Steel—303 stainless steel lead screws have good corrosion resistance.

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., mm	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Tensile Strength, psi		Each
4140 Alloy Steel



	M5 × 1.25 mm	100	Metric Rounded Trapezoidal	4:1	4	5	±0.089 mm/300 mm	Brinell 200	90,000	97783A150	000000


	M5 × 1.25 mm	175	Metric Rounded Trapezoidal	4:1	4	5	±0.089 mm/300 mm	Brinell 200	125,000	97783A160	00000
	M8 × 2 mm	200	Metric Rounded Trapezoidal	2:1	2	4	±0.089 mm/300 mm	Brinell 200	125,000	97783A170	00000
	M8 × 2 mm	300	Metric Rounded Trapezoidal	2:1	2	4	±0.089 mm/300 mm	Brinell 200	125,000	97783A180	00000


	303 Stainless Steel



			M2 × 0.5 mm	50	Metric Rounded Trapezoidal	2:1	2	1	±0.089 mm/300 mm	Brinell 160	90,000	97783A110	00000


			M2 × 0.5 mm	100	Metric Rounded Trapezoidal	2:1	2	1	±0.089 mm/300 mm	Brinell 160	90,000	97783A120	00000
			M4 × 1.25 mm	75	Metric Rounded Trapezoidal	8:1	8	10	±0.089 mm/300 mm	Brinell 160	90,000	97783A130	00000
			M4 × 1.25 mm	150	Metric Rounded Trapezoidal	8:1	8	10	±0.089 mm/300 mm	Brinell 160	90,000	97783A140	00000


			304 Stainless Steel



					M8 × 2.5 mm	250	Metric Rounded Trapezoidal	4:1	4	10	±0.1 mm/300 mm	Brinell 160	72,000	2391N24	00000


					M8 × 2.5 mm	500	Metric Rounded Trapezoidal	4:1	4	10	±0.1 mm/300 mm	Brinell 160	72,000	2391N25	00000
					M10 × 3 mm	250	Metric Rounded Trapezoidal	4:1	4	12	±0.1 mm/300 mm	Brinell 160	72,000	2391N26	00000
					M10 × 3 mm	500	Metric Rounded Trapezoidal	4:1	4	12	±0.1 mm/300 mm	Brinell 160	72,000	2391N27	00000
					M12 × 2.5 mm	250	Metric Rounded Trapezoidal	2:1	2	5	±0.1 mm/300 mm	Brinell 160	72,000	2391N28	00000
					M12 × 2.5 mm	500	Metric Rounded Trapezoidal	2:1	2	5	±0.1 mm/300 mm	Brinell 160	72,000	2391N29	00000
					M12 × 2.5 mm	1,000	Metric Rounded Trapezoidal	2:1	2	5	±0.1 mm/300 mm	Brinell 160	72,000	2391N31	000000
					M16 × 5 mm	250	Metric Rounded Trapezoidal	7:1	7	35	±0.1 mm/300 mm	Brinell 160	72,000	2391N32	00000
					M16 × 5 mm	500	Metric Rounded Trapezoidal	7:1	7	35	±0.1 mm/300 mm	Brinell 160	72,000	2391N33	000000
					M16 × 5 mm	1,000	Metric Rounded Trapezoidal	7:1	7	35	±0.1 mm/300 mm	Brinell 160	72,000	2391N34	000000
					M20 × 5 mm	500	Metric Rounded Trapezoidal	4:1	4	20	±0.1 mm/300 mm	Brinell 160	72,000	2391N35	000000


					M20 × 5 mm	1,000	Metric Rounded Trapezoidal	4:1	4	20	±0.1 mm/300 mm	Brinell 160	72,000	2391N36	000000
					M20 × 7.5 mm	500	Metric Rounded Trapezoidal	8:1	8	60	±0.1 mm/300 mm	Brinell 160	72,000	2391N37	000000
					M20 × 7.5 mm	1,000	Metric Rounded Trapezoidal	8:1	8	60	±0.1 mm/300 mm	Brinell 160	72,000	2391N38	000000


					17-4 PH Stainless Steel



							M2 × 0.4 mm	145	Metric Rounded Trapezoidal	2:1	2	0.75	±0.15 mm/300 mm	Rockwell C35	145,000	4537N101	000000


							M2 × 0.4 mm	145	Metric Rounded Trapezoidal	4:1	4	1.5	±0.15 mm/300 mm	Rockwell C35	145,000	4537N102	000000
							M2 × 0.4 mm	145	Metric Rounded Trapezoidal	8:1	8	3	±0.15 mm/300 mm	Rockwell C35	145,000	4537N103	000000
							M3 × 0.5 mm	145	Metric Rounded Trapezoidal	2:1	2	1	±0.15 mm/300 mm	Rockwell C35	145,000	4537N104	000000
							M3 × 0.5 mm	145	Metric Rounded Trapezoidal	6:1	6	3	±0.15 mm/300 mm	Rockwell C35	145,000	4537N105	000000
							M3 × 0.5 mm	145	Metric Rounded Trapezoidal	12:1	12	6	±0.15 mm/300 mm	Rockwell C35	145,000	4537N106	000000
							M4 × 1 mm	145	Metric Rounded Trapezoidal	4:1	4	4	±0.15 mm/300 mm	Rockwell C35	145,000	4537N107	000000
							M4 × 1 mm	145	Metric Rounded Trapezoidal	8:1	8	8	±0.15 mm/300 mm	Rockwell C35	145,000	4537N108	000000

Lead Screw with One Machinable End—Right-Hand Thread

Image of Product. Front orientation. Precision Lead Screws and Nuts. Metric Fast-Travel Ultra-Precision Lead Screws and Nuts, Lead Screw with One Machinable End—Right-Hand Thread.

Lead screws with one machinable end let you create your own custom connection to suit your application.

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.

				End, mm
	Thread Size	Lg., mm	Thread Type	Dia.	Lg.	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Tensile Strength, psi		Each
17-4 PH Stainless Steel



		M2 × 0.4 mm	150	Metric Rounded Trapezoidal	7	25	2:1	2	0.75	±0.15 mm/300 mm	Rockwell C35	145,000	4537N121	0000000


		M2 × 0.4 mm	150	Metric Rounded Trapezoidal	7	25	4:1	4	1.5	±0.15 mm/300 mm	Rockwell C35	145,000	4537N122	000000
		M2 × 0.4 mm	150	Metric Rounded Trapezoidal	7	25	8:1	8	3	±0.15 mm/300 mm	Rockwell C35	145,000	4537N123	000000
		M3 × 0.5 mm	150	Metric Rounded Trapezoidal	7	25	2:1	2	1	±0.15 mm/300 mm	Rockwell C35	145,000	4537N124	000000
		M3 × 0.5 mm	150	Metric Rounded Trapezoidal	7	25	6:1	6	3	±0.15 mm/300 mm	Rockwell C35	145,000	4537N125	000000
		M3 × 0.5 mm	150	Metric Rounded Trapezoidal	7	25	12:1	12	6	±0.15 mm/300 mm	Rockwell C35	145,000	4537N126	000000
		M4 × 1 mm	150	Metric Rounded Trapezoidal	7	25	4:1	4	4	±0.15 mm/300 mm	Rockwell C35	145,000	4537N127	000000
		M4 × 1 mm	150	Metric Rounded Trapezoidal	7	25	8:1	8	8	±0.15 mm/300 mm	Rockwell C35	145,000	4537N128	000000

Lead Screw with One Coupling End—Right-Hand Thread

Lead screws with one coupling end connect directly with your shaft without extra machining. Torque down the locknut once inserted.

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.

				End, mm
	Thread Size	Lg., mm	Thread Type	Dia.	Lg.	For Shaft Dia.	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Tensile Strength, psi		Each
17-4 PH Stainless Steel



		M2 × 0.4 mm	150	Metric Rounded Trapezoidal	6.5	15	2	2:1	2	0.75	±0.15 mm/300 mm	Rockwell C35	145,000	4537N141	0000000


		M2 × 0.4 mm	150	Metric Rounded Trapezoidal	6.5	15	2	4:1	4	1.5	±0.15 mm/300 mm	Rockwell C35	145,000	4537N142	000000
		M2 × 0.4 mm	150	Metric Rounded Trapezoidal	6.5	15	2	8:1	8	3	±0.15 mm/300 mm	Rockwell C35	145,000	4537N143	000000
		M3 × 0.5 mm	150	Metric Rounded Trapezoidal	7.5	15.5	3	2:1	2	1	±0.15 mm/300 mm	Rockwell C35	145,000	4537N144	000000
		M3 × 0.5 mm	150	Metric Rounded Trapezoidal	7.5	15.5	3	6:1	6	3	±0.15 mm/300 mm	Rockwell C35	145,000	4537N145	000000
		M3 × 0.5 mm	150	Metric Rounded Trapezoidal	7.5	15.5	3	12:1	12	6	±0.15 mm/300 mm	Rockwell C35	145,000	4537N146	000000
		M4 × 1 mm	150	Metric Rounded Trapezoidal	8.5	15.5	4	4:1	4	4	±0.15 mm/300 mm	Rockwell C35	145,000	4537N147	000000
		M4 × 1 mm	150	Metric Rounded Trapezoidal	8.5	15.5	4	8:1	8	8	±0.15 mm/300 mm	Rockwell C35	145,000	4537N148	000000
		M4 × 1 mm	150	Metric Rounded Trapezoidal	9.5	15.5	5	4:1	4	4	±0.15 mm/300 mm	Rockwell C35	145,000	4537N149	000000
		M4 × 1 mm	150	Metric Rounded Trapezoidal	9.5	15.5	5	8:1	8	8	±0.15 mm/300 mm	Rockwell C35	145,000	4537N151	000000

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

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.

Lead Screws—Right-Hand Thread

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

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



	M10 × 2 mm	250	Metric Trapezoidal	1:1	1	2	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K71	000000


	M10 × 2 mm	500	Metric Trapezoidal	1:1	1	2	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K72	00000
	M10 × 2 mm	750	Metric Trapezoidal	1:1	1	2	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K73	00000
	M10 × 2 mm	1,750	Metric Trapezoidal	1:1	1	2	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	70,000	DIN 103	7549K1	00000
	M12 × 3 mm	500	Metric Trapezoidal	1:1	1	3	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K74	00000
	M12 × 3 mm	1,000	Metric Trapezoidal	1:1	1	3	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K75	00000
	M12 × 3 mm	1,750	Metric Trapezoidal	1:1	1	3	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	70,000	DIN 103	7549K2	00000
	M16 × 3 mm	500	Metric Trapezoidal	1:1	1	3	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K76	00000
	M16 × 3 mm	1,000	Metric Trapezoidal	1:1	1	3	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K77	00000
	M16 × 3 mm	1,750	Metric Trapezoidal	1:1	1	3	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	70,000	DIN 103	7549K4	00000
	M20 × 4 mm	500	Metric Trapezoidal	1:1	1	4	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K78	00000


	M20 × 4 mm	1,000	Metric Trapezoidal	1:1	1	4	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K79	00000
	M20 × 4 mm	1,750	Metric Trapezoidal	1:1	1	4	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	70,000	DIN 103	7549K6	000000
	M24 × 5 mm	500	Metric Trapezoidal	1:1	1	5	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K81	00000
	M24 × 5 mm	1,000	Metric Trapezoidal	1:1	1	5	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K82	00000
	M24 × 5 mm	1,750	Metric Trapezoidal	1:1	1	5	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	70,000	DIN 103	7549K7	000000
	M28 × 5 mm	1,000	Metric Trapezoidal	1:1	1	5	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K83	00000
	M28 × 5 mm	1,750	Metric Trapezoidal	1:1	1	5	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K84	000000
	M40 × 7 mm	1,000	Metric Trapezoidal	1:1	1	7	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	85,000	DIN 103	7549K85	000000
	M40 × 7 mm	1,750	Metric Trapezoidal	1:1	1	7	±0.15 mm/300 mm	Metric Trapezoidal Class 8e	Brinell 150	70,000	DIN 103	7549K12	000000

Round Nuts—Right-Hand Thread

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

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

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



	M10 × 2 mm	3/4"	0.75"	Metric Trapezoidal	1:1	1	2	Metric Trapezoidal Class 7H	Brinell 70	Not Rated	670	DIN 103	7549K32	000000


	M12 × 3 mm	1"	0.875"	Metric Trapezoidal	1:1	1	3	Metric Trapezoidal Class 7H	Brinell 70	Not Rated	1,100	DIN 103	7549K33	00000
	M16 × 3 mm	1 1/8"	1.125"	Metric Trapezoidal	1:1	1	3	Metric Trapezoidal Class 7H	Brinell 70	Not Rated	2,000	DIN 103	7549K35	00000
	M20 × 4 mm	1 1/2"	1.25"	Metric Trapezoidal	1:1	1	4	Metric Trapezoidal Class 7H	Brinell 70	Not Rated	3,100	DIN 103	7549K37	00000
	M24 × 5 mm	2"	1.75"	Metric Trapezoidal	1:1	1	5	Metric Trapezoidal Class 7H	Brinell 70	Not Rated	4,500	DIN 103	7549K38	00000
	M28 × 5 mm	2"	1.75"	Metric Trapezoidal	1:1	1	5	Metric Trapezoidal Class 7H	Brinell 69	44,000	6,100	DIN 103	7549K87	00000
	M40 × 7 mm	3"	2.5"	Metric Trapezoidal	1:1	1	7	Metric Trapezoidal Class 7H	Brinell 70	Not Rated	12,300	DIN 103	7549K43	00000

Externally Threaded Nuts—Right-Hand Thread

Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Metric Precision Lead Screws and Nuts, Externally Threaded 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.

								External Thread
	Thread Size	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Size	Lg.	Thread Fit	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	Specs. Met		Each
Manganese Bronze



		M10 × 2 mm	5/8"	0.68"	Metric Trapezoidal	1:1	1	2	9/16"-18	3/8"	Metric Trapezoidal Class 7H	Brinell 126	75,000	670	DIN 103	7549K88	000000


		M12 × 3 mm	3/4"	1.125"	Metric Trapezoidal	1:1	1	3	15/16"-16	1/2"	Metric Trapezoidal Class 7H	Brinell 126	75,000	1,100	DIN 103	7549K89	00000
		M16 × 3 mm	1"	1.125"	Metric Trapezoidal	1:1	1	3	15/16"-16	1/2"	Metric Trapezoidal Class 7H	Brinell 126	75,000	2,000	DIN 103	7549K91	00000
		M20 × 4 mm	1 1/4"	1.125"	Metric Trapezoidal	1:1	1	4	1"-18	1/2"	Metric Trapezoidal Class 7H	Brinell 126	75,000	3,100	DIN 103	7549K92	00000
		M24 × 5 mm	1 1/2"	1.5"	Metric Trapezoidal	1:1	1	5	1 3/8"-16	1/2"	Metric Trapezoidal Class 7H	Brinell 126	75,000	4,500	DIN 103	7549K93	000000
		M28 × 5 mm	1 3/4"	2.125"	Metric Trapezoidal	1:1	1	5	1 31/32"-18	13/16"	Metric Trapezoidal Class 7H	Brinell 126	75,000	6,100	DIN 103	7549K94	000000
		M40 × 7 mm	2 19/64"	2.125"	Metric Trapezoidal	1:1	1	7	1 31/32"-18	13/16"	Metric Trapezoidal Class 7H	Brinell 126	75,000	12,300	DIN 103	7549K95	000000

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

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.

Lead Screw—Right-Hand Thread

4140 Alloy Steel—Alloy steel lead screws are hard and strong.

303 Stainless Steel—303 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., mm	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Tensile Strength, psi		Each
4140 Alloy Steel



	M8 × 1.5 mm	100	Metric Rounded Trapezoidal	1:1	1	1.5	±0.089 mm/300 mm	Brinell 200	125,000	7549K55	000000


	M8 × 1.5 mm	200	Metric Rounded Trapezoidal	1:1	1	1.5	±0.089 mm/300 mm	Brinell 200	125,000	7549K56	00000
	M8 × 1.5 mm	300	Metric Rounded Trapezoidal	1:1	1	1.5	±0.089 mm/300 mm	Brinell 200	125,000	7549K57	00000


	303 Stainless Steel



			M2 × 0.5 mm	50	Metric Rounded Trapezoidal	1:1	1	0.5	±0.089 mm/300 mm	Brinell 160	90,000	7549K51	00000


			M2 × 0.5 mm	100	Metric Rounded Trapezoidal	1:1	1	0.5	±0.089 mm/300 mm	Brinell 160	90,000	7549K52	00000
			M4 × 0.3 mm	75	Metric Rounded Trapezoidal	1:1	1	0.3	±0.089 mm/300 mm	Brinell 160	90,000	7549K53	00000
			M4 × 0.3 mm	150	Metric Rounded Trapezoidal	1:1	1	0.3	±0.089 mm/300 mm	Brinell 160	90,000	7549K54	00000


			17-4 PH Stainless Steel



					M2 × 0.4 mm	145	Metric Rounded Trapezoidal	1:1	1	0.375	±0.15 mm/300 mm	Rockwell C35	145,000	90500A110	000000


					M3 × 0.5 mm	145	Metric Rounded Trapezoidal	1:1	1	0.5	±0.15 mm/300 mm	Rockwell C35	145,000	90500A120	000000
					M4 × 1 mm	145	Metric Rounded Trapezoidal	1:1	1	1	±0.15 mm/300 mm	Rockwell C35	145,000	90500A130	000000

Lead Screw with One Machinable End—Right-Hand Thread

Image of Product. Front orientation. Precision Lead Screws and Nuts. Metric Ultra-Precision Lead Screws and Nuts, Lead Screw with One Machinable End—Right-Hand Thread.

Lead screws with one machinable end let you create your own custom connection to suit your application.

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.

				End, mm
	Thread Size	Lg., mm	Thread Type	Dia.	Lg.	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Tensile Strength, psi		Each
17-4 PH Stainless Steel



		M2 × 0.4 mm	150	Metric Rounded Trapezoidal	7	25	1:1	1	0.375	±0.15 mm/300 mm	Rockwell C35	145,000	90500A140	0000000


		M3 × 0.5 mm	150	Metric Rounded Trapezoidal	7	25	1:1	1	0.5	±0.15 mm/300 mm	Rockwell C35	145,000	90500A150	000000
		M4 × 1 mm	150	Metric Rounded Trapezoidal	7	25	1:1	1	1	±0.15 mm/300 mm	Rockwell C35	145,000	90500A160	000000

Lead Screw with One Coupling End—Right-Hand Thread

Image of Product. Front orientation. Precision Lead Screws and Nuts. Metric Ultra-Precision Lead Screws and Nuts, Lead Screw with One Coupling End—Right-Hand Thread.

Lead screws with one coupling end connect directly with your shaft without extra machining. Torque down the locknut once inserted.

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.

				End, mm
	Thread Size	Lg., mm	Thread Type	Dia.	Lg.	For Shaft Dia.	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Tensile Strength, psi		Each
17-4 PH Stainless Steel



		M2 × 0.4 mm	150	Metric Rounded Trapezoidal	6.5	15	2	1:1	1	0.375	±0.15 mm/300 mm	Rockwell C35	145,000	90500A170	0000000


		M3 × 0.5 mm	150	Metric Rounded Trapezoidal	7.5	15.5	3	1:1	1	0.5	±0.15 mm/300 mm	Rockwell C35	145,000	90500A180	000000
		M4 × 1 mm	150	Metric Rounded Trapezoidal	8.5	15.5	4	1:1	1	1	±0.15 mm/300 mm	Rockwell C35	145,000	90500A190	000000
		M4 × 1 mm	150	Metric Rounded Trapezoidal	9.5	15.5	5	1:1	1	1	±0.15 mm/300 mm	Rockwell C35	145,000	90500A210	000000

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

Metric Clamping Lead Screw Collars

Thread these one-piece collars onto a metric lead screw to separate and position components, or use them as an end stop to limit travel. Made of black-oxide steel, they have mild corrosion resistance. Tighten the clamping screws to secure.

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

	No. of Thread Starts	Hardness		Each
Right-Hand Thread







	Black-Oxide 1215 Carbon Steel

	M8 × 1.5 mm	18	9	1	Brinell 167	2198N101	000000


	M10 × 2 mm	24	9	1	Brinell 167	2198N11	00000
	M12 × 3 mm	28	11	1	Brinell 167	2198N12	00000
	M16 × 3 mm	34	13	1	Brinell 167	2198N13	00000
	M16 × 4 mm	34	13	1	Brinell 167	2198N102	00000
	M20 × 4 mm	40	15	1	Brinell 167	2198N14	00000
	M24 × 5 mm	45	15	1	Brinell 167	2198N103	00000