Roller Screws | McMaster-Carr

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Ball Nut

Ball Screw

Ball Screw with One Machined End

End Support

Nut

Roller Screw

System of Measurement

Thread Size

Length

Nut Type

Travel Distance per Turn

Dynamic Thrust Load Capacity

Less than 1,000 lb.

1,000 lb. to 1,999 lb.

2,000 lb. to 9,999 lb.

10,000 lb. to 19,999 lb.

20,000 lb. or greater

Diameter

Threading

Thread Direction

Material

Thread Type

Number of Thread Starts

Hardness

Rockwell C58 to Rockwell C62

REACH

DFARS Specialty Metals

Exempt

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

RoHS

Compliant

Export Control Classification Number (ECCN)

EAR99

Tensile Strength

Less than 60,000 psi

60,000 psi to 79,999 psi

80,000 psi to 99,999 psi

100,000 psi to 129,999 psi

130,000 psi or greater

Maximum Backlash

For Load Direction

Combined Radial and Thrust

Minimum Temperature

Maximum Temperature

229 Products

Roller Screws and Nuts

Precision ground to create more points of contact, these roller screws and nuts are highly accurate and handle much higher loads than ball screws and nuts of the same size. They're most traditionally used to replace hydraulics in linear actuators but can also be used in place of ball and lead screw assemblies because of their high load capacity and precise motion control. In fact, they're almost four times more accurate than our most accurate ball and lead screws. They also last longer than ball screw nuts in systems with lower loads and can handle higher shock loads. However, because they have more contact points, they’re slightly less efficient than ball screws. To ensure compatibility, select components that have the same thread direction and size.

Roller Screws—Right-Hand Partially Threaded

Roller screws are made of hardened steel for strength and durability.

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

	Lg., mm	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Min. Thread Lg., mm	Root Dia., mm	Hardness	Tensile Strength, psi		Each
Alloy Steel



	M15	642	5	4	±0.023 mm/300 mm	522	14.59	Rockwell C60	105,000	0000000	000000000


	M15	642	5	5	±0.023 mm/300 mm	522	14.44	Rockwell C60	105,000	0000000	00000000
	M20	680	5	4	±0.023 mm/300 mm	561	19.15	Rockwell C60	105,000	0000000	00000000
	M20	680	5	5	±0.023 mm/300 mm	561	19.05	Rockwell C60	105,000	0000000	00000000

Round Nuts—Right-Hand Thread

Image of Product. Front orientation. Roller Screws and Nuts. Nuts.

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

						Keyway, mm
	Thread Size	Lg., mm	Dia., mm	No. of Thread Starts	Travel Distance per Turn, mm	Wd.	Dp.	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash, mm	Temp. Range, ° F	Lubrication		Each
Alloy Steel



		M15	45	35	5	4	4	14	Rockwell C60	9,230	0.03	-40 to 350	Required	0000000	000000000


		M15	45	35	5	5	4	14	Rockwell C60	12,000	0.03	-40 to 350	Required	0000000	00000000
		M20	65	42	5	4	4	18	Rockwell C60	15,100	0.03	-40 to 350	Required	0000000	00000000
		M20	65	42	5	5	4	18	Rockwell C60	20,600	0.03	-40 to 350	Required	0000000	00000000

Ball Screws and Nuts


A	Ball Nuts, Externally Threaded Nut, Style B	Flange Nut Ball Nuts Style C

Flange Nut Ball Nuts Style D	Flange Nut Ball Nuts Style E

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	0000000	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	000000	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	0000000	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	000000	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	0000000	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	000000	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	000000	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	0000000	000000

Ball Screws—Right-Hand Threaded

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.

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

	Thread Size	Lg.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temp. Range, ° F		Each
Carbon Steel



		M14	500 mm	1	4 mm	±0.210 mm/300 mm	11.5 mm	Rockwell C58	21,000	5 to 175	0000000	000000


		M14	1,000 mm	1	4 mm	±0.210 mm/300 mm	11.5 mm	Rockwell C58	21,000	5 to 175	0000000	000000
		M16	500 mm	1	5 mm	±0.210 mm/300 mm	13.5 mm	Rockwell C58	21,000	5 to 175	0000000	000000
		M16	1,000 mm	1	5 mm	±0.210 mm/300 mm	13.5 mm	Rockwell C58	21,000	5 to 175	000000	000000
		M20	500 mm	1	5 mm	±0.210 mm/300 mm	17.2 mm	Rockwell C58	21,000	5 to 175	0000000	000000
		M20	1,000 mm	1	5 mm	±0.210 mm/300 mm	17.2 mm	Rockwell C58	21,000	5 to 175	000000	000000
		M20	1,500 mm	1	10 mm	±0.210 mm/300 mm	16.4 mm	Rockwell C58	21,000	5 to 175	000000	000000
		M25	500 mm	1	5 mm	±0.210 mm/300 mm	22.2 mm	Rockwell C58	21,000	5 to 175	0000000	000000
		M25	1,000 mm	1	5 mm	±0.210 mm/300 mm	22.2 mm	Rockwell C58	21,000	5 to 175	0000000	000000
		M25	1,500 mm	1	10 mm	±0.210 mm/300 mm	20.2 mm	Rockwell C58	21,000	5 to 175	0000000	000000


		Alloy Steel



				3/8"-8	1 ft.	1	0.125"	±0.007"/1 ft.	0.3"	Rockwell C56	85,000	-65 to 300	00000000	000000


				3/8"-8	2 ft.	1	0.125"	±0.007"/1"	0.3"	Rockwell C56	85,000	-65 to 300	00000000	000000
				5/8"-5	1 ft.	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	00000
				5/8"-5	2 ft.	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	00000
				5/8"-5	3 ft.	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	00000
				5/8"-5	4 ft.	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	000000
				5/8"-5	5 ft.	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	000000
				5/8"-5	6 ft.	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	000000
				3/4"-5	1 ft.	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	00000000	00000
				3/4"-5	2 ft.	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	00000000	000000
				3/4"-5	3 ft.	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	00000000	000000


				3/4"-5	4 ft.	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	00000000	000000
				3/4"-5	5 ft.	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	00000000	000000
				3/4"-5	6 ft.	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	00000000	000000
				1"-4	2 ft.	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000
				1"-4	3 ft.	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000
				1"-4	4 ft.	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000
				1"-4	5 ft.	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000
				1"-4	6 ft.	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000
				1"-4	7 ft.	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000
				1"-4	8 ft.	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000


				1 1/2"-2	2 ft.	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	00000000	000000
				1 1/2"-2	3 ft.	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	00000000	000000
				1 1/2"-2	4 ft.	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	00000000	000000
				1 1/2"-2	5 ft.	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	00000000	000000
				1 1/2"-2	6 ft.	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	00000000	000000
				1 1/2"-2	7 ft.	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	00000000	000000
				1 1/2"-2	8 ft.	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	00000000	000000
				1 1/2"-4	2 ft.	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	00000000	000000
				1 1/2"-4	3 ft.	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	00000000	000000
				1 1/2"-4	4 ft.	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	00000000	000000


				1 1/2"-4	5 ft.	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	00000000	000000
				1 1/2"-4	6 ft.	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	00000000	000000
				1 1/2"-4	7 ft.	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	00000000	000000
				1 1/2"-4	8 ft.	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	00000000	000000
2 1/4"-2				2 ft.	1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	00000000	000000
2 1/4"-2	3 ft.			1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	00000000	00000000
2 1/4"-2	4 ft.			1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	00000000	00000000
2 1/4"-2	5 ft.			1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	00000000	00000000
2 1/4"-2	6 ft.			1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	00000000	00000000
2 1/4"-2	7 ft.			1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	00000000	00000000


2 1/4"-2	8 ft.			1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	00000000	00000000

Ball Screws—Left-Hand Threaded

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.

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

	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temp. Range, ° F		Each
Alloy Steel



	5/8"-5	1	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	000000


	5/8"-5	2	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	00000
	5/8"-5	3	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	00000
	5/8"-5	6	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	00000000	000000
	1"-4	1	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	00000
	1"-4	2	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000
	1"-4	3	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000
	1"-4	6	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	00000000	000000

Ball Screws with One Machined End—Right-Hand Threaded

Ball screws with one machined end fit into an end support and are ready to connect to a motor. To adjust the length, the non-machined end can be cut to size.

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.

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

								Machined End			Keyway
	Thread Size	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Shoulder Lg.	Overall Lg.	Thread Size	Dia.	Lg.	Wd.	Hardness	Tensile Strength, psi	Temp. Range, ° F		Each
Alloy Steel



		5/8"-5	2	1	0.2"	±0.007"/1 ft.	0.5"	2"	3 19/64"	0.469"-32	3/8"	1 1/4"	1/8"	Rockwell C56	72,500	-65 to 300	00000000	0000000


		5/8"-5	4	1	0.2"	±0.007"/1 ft.	0.5"	2"	3 19/64"	0.469"-32	3/8"	1 1/4"	1/8"	Rockwell C56	72,500	-65 to 300	00000000	000000
		5/8"-5	6	1	0.2"	±0.007"/1 ft.	0.5"	2"	3 19/64"	0.469"-32	3/8"	1 1/4"	1/8"	Rockwell C56	72,500	-65 to 300	00000000	000000
		3/4"-5	2	1	0.2"	±0.007"/1 ft.	0.65"	2 3/16"	3 3/16"	0.586"-32	1/2"	1"	1/8"	Rockwell C56	92,500	-65 to 300	00000000	000000
		3/4"-5	4	1	0.2"	±0.007"/1 ft.	0.65"	2 3/16"	3 3/16"	0.586"-32	1/2"	1"	1/8"	Rockwell C56	92,500	-65 to 300	00000000	000000
		3/4"-5	6	1	0.2"	±0.007"/1 ft.	0.65"	2 3/16"	3 3/16"	0.586"-32	1/2"	1"	1/8"	Rockwell C56	92,500	-65 to 300	00000000	000000
		1"-4	2	1	0.25"	±0.007"/1 ft.	0.84"	2 23/32"	4 1/32"	0.781"-32	5/8"	1.13"	0.188"	Rockwell C56	122,000	-65 to 300	00000000	000000
		1"-4	4	1	0.25"	±0.007"/1 ft.	0.84"	2 23/32"	4 1/32"	0.781"-32	5/8"	1.13"	0.188"	Rockwell C56	122,000	-65 to 300	00000000	000000
		1"-4	6	1	0.25"	±0.007"/1 ft.	0.84"	2 23/32"	4 1/32"	0.781"-32	5/8"	1.13"	0.188"	Rockwell C56	122,000	-65 to 300	00000000	00000000

Externally Threaded Ball Nuts—Right-Hand Threaded


A	Style B

Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.

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.

Wipers—Secure a way wiper on the end of a ball nut to sweep chips and other contaminants out of the way as it moves across the ball screw.

	Ball Screw Nuts															Wipers
	Style	Thread Size	Lg.	Wd.	Ht.	Dia.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each		Each
Black-Oxide Alloy Steel



		A	3/8"-8	1"	—	—	3/4"	1	0.125"	11/16"-28	Rockwell C56	170	0.015"	-65 to 300	00000000	0000000	———	0


		A	5/8"-5	1 45/64"	1"	1"	—	1	0.2"	15/16"-16	Rockwell C56	820	0.015"	-65 to 300	00000000	00000	———	0
		A	3/4"-5	2 7/8"	—	—	1 1/4"	1	0.2"	1 1/8"-18	Rockwell C56	1,900	0.015"	-65 to 300	00000000	00000	0000000	000000
		A	1 1/2"-2	5 9/16"	—	—	2 5/8"	1	0.5"	2 23/64"-18	Rockwell C56	12,900	0.015"	-65 to 300	00000000	000000	———	0
		A	1 1/2"-4	3"	—	—	2 3/32"	1	0.25"	1 31/32"-18	Rockwell C56	4,250	0.015"	-65 to 300	00000000	000000	———	0
		A	2 1/4"-2	6 11/16"	—	—	3 3/8"	1	0.5"	3.137"-12	Rockwell C58 to Rockwell C62	21,306	0.015"	-65 to 300	00000000	00000000	———	0
		B	1"-4	2 11/32"	1 1/2"	1 1/2"	—	1	0.25"	1 9/16"-18	Rockwell C56	1,625	0.015"	-65 to 300	00000000	000000	———	0

Externally Threaded Ball Nuts—Left-Hand Threaded

Image of Product. A. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Externally Threaded Nut, Ball Nuts, Style A.

Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.

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.

	Thread Size	Lg.	Wd.	Ht.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
Black-Oxide Alloy Steel



	A	5/8"-5	1 45/64"	1"	1"	1	0.2"	15/16"-16	Rockwell C56	820	0.015"	-65 to 300	00000000	000000


	A	1"-4	2 11/32"	1 1/2"	1 1/2"	1	0.25"	1 9/16"-18	Rockwell C56	1,620	0.015"	-65 to 300	00000000	000000

Platform Ball Nuts—Right-Hand Threaded

Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Platform Nut, Ball Nuts.

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.

	Lg., mm	Wd., mm	Ht., mm	Ctr. Ht., mm	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash, mm	Temp. Range, ° F		Each
Alloy Steel



	M14	35	34	30	13	1	4	Rockwell C58	1,200	0.1	5 to 175	0000000	0000000


	M16	36	42	32.5	16	1	5	Rockwell C58	1,200	0.1	5 to 175	0000000	000000
	M20	35	48	39	17	1	5	Rockwell C58	1,300	0.1	5 to 175	0000000	000000
	M20	58	48	46	18	1	10	Rockwell C58	2,350	0.1	5 to 175	0000000	000000
	M25	35	60	45	20	1	5	Rockwell C58	1,500	0.1	5 to 175	0000000	000000
	M25	94	60	55	23	1	10	Rockwell C58	7,000	0.1	5 to 175	0000000	000000

Flange Ball Nuts—Right-Hand Threaded


Style C	Style D	Style E

Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.

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.

							Flange
	Style	Thread Size	Lg.	Wd.	Ht.	Dia.	Dia.	Wd., mm	Ht., mm	Thk.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
Alloy Steel



		C	M14	40 mm	—	—	31 mm	—	50	37	10 mm	1	4 mm	—	Rockwell C58	1,200	0.1 mm	5 to 175	0000000	0000000


		C	M16	40 mm	—	—	34 mm	—	54	40	10 mm	1	5 mm	—	Rockwell C58	1,200	0.1 mm	5 to 175	0000000	000000
		C	M20	40 mm	—	—	40 mm	—	60	46	10 mm	1	5 mm	—	Rockwell C58	1,300	0.1 mm	5 to 175	0000000	000000
		C	M20	64 mm	—	—	52 mm	—	82	64	12 mm	1	10 mm	—	Rockwell C58	2,350	0.1 mm	5 to 175	0000000	000000
		C	M25	40 mm	—	—	43 mm	—	67	50	10 mm	1	5 mm	—	Rockwell C58	1,500	0.1 mm	5 to 175	0000000	000000
		C	M25	98 mm	—	—	60 mm	—	96	72	15 mm	1	10 mm	—	Rockwell C58	7,000	0.1 mm	5 to 175	0000000	000000


		Black-Oxide Alloy Steel



				D	3/8"-8	1 1/64"	—	—	3/4"	1 19/32"	—	—	9/32"	1	0.125"	1 15/64"	Rockwell C56	170	0.015"	-65 to 300	00000000	000000


				D	3/4"-5	2 29/32"	—	—	1 1/4"	2 19/32"	—	—	17/32"	1	0.2"	2 3/32"	Rockwell C56	1,900	0.015"	-65 to 300	00000000	000000
				D	1 1/2"-2	5 19/32"	—	—	2 5/8"	4 15/16"	—	—	25/32"	1	0.5"	4 1/16"	Rockwell C56	12,900	0.015"	-65 to 300	00000000	000000
				D	1 1/2"-4	3 1/32"	—	—	2 3/32"	4 23/64"	—	—	17/32"	1	0.25"	3 7/16"	Rockwell C56	4,250	0.015"	-65 to 300	00000000	000000
				D	2 1/4"-2	6 23/32"	—	—	3 3/8"	5 3/8"	—	—	1 37/64"	1	0.5"	4 3/8"	Rockwell C58 to Rockwell C62	21,306	0.015"	-65 to 300	0000000	00000000
				E	5/8"-5	1 47/64"	1"	1"	—	2 19/32"	—	—	17/32"	1	0.2"	2 3/32"	Rockwell C56	820	0.015"	-65 to 300	00000000	000000
				E	1"-4	2 63/64"	1 1/2"	1 1/2"	—	3 15/64"	—	—	5/8"	1	0.25"	2 3/4"	Rockwell C56	1,620	0.015"	-65 to 300	00000000	000000

Flange Ball Nuts—Left-Hand Threaded


Style E

Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.

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.

						Flange
	Style	Thread Size	Lg.	Wd.	Ht.	Dia.	Thk.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
Black-Oxide Alloy Steel



		E	5/8"-5	1 47/64"	1"	1"	2 19/32"	17/32"	1	0.2"	2 3/32"	Rockwell C56	820	0.015"	-65 to 300	00000000	0000000


		E	1"-4	2 5/8"	1 1/2"	1 1/2"	2 15/64"	5/8"	1	0.25"	2 3/4"	Rockwell C56	1,620	0.015"	-65 to 300	00000000	000000
		E	1"-4	2 63/64"	1 1/2"	1 1/2"	3 15/64"	5/8"	1	0.25"	2 3/4"	Rockwell C56	1,620	0.015"	-65 to 300	00000000	000000

Fast-Travel Ball Screws and Nuts


Ball Nuts, Externally Threaded Nut, Style A	Ball Nuts, Externally Threaded Nut, Style B	Ball Nuts, Externally Threaded Nut, Style C	Ball Nuts, Externally Threaded Nut, Style D

Flange Nut Ball Nuts Style E	Flange Nut Ball Nuts Style F	Flange Nut Ball Nuts Style G

Multiple thread channels (also known as thread starts) create faster linear travel than ball screws with a single thread start. Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. To ensure compatibility, select components that have the same thread size and number of thread starts. 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—Right-Hand Threaded

Carbon Steel—Carbon steel ball screws and nuts are case hardened, so they resist wear better than standard carbon steel. However, they are less corrosion resistant than black-oxide alloy steel screws and nuts.

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.

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

	Lg.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temp. Range, ° F		Each
Carbon Steel



	M12	500 mm	2	10 mm	±0.05 mm/300 mm	9.6 mm	Rockwell C56	95,000	32 to 150	00000000	0000000


	M12	1,000 mm	2	10 mm	±0.05 mm/300 mm	9.6 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M15	500 mm	4	16 mm	±0.05 mm/300 mm	12.9 mm	Rockwell C56	95,000	32 to 150	00000000	00000
	M15	500 mm	4	20 mm	±0.05 mm/300 mm	12.3 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M15	1,000 mm	4	16 mm	±0.05 mm/300 mm	12.9 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M15	1,000 mm	4	20 mm	±0.05 mm/300 mm	12.3 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M16	500 mm	4	16 mm	±0.05 mm/300 mm	13.3 mm	Rockwell C56	95,000	32 to 150	00000000	00000
	M16	1,000 mm	4	16 mm	±0.05 mm/300 mm	13.3 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M20	500 mm	4	20 mm	±0.05 mm/300 mm	17 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M20	1,000 mm	4	20 mm	±0.05 mm/300 mm	17 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M32	500 mm	2	20 mm	±0.05 mm/300 mm	28.5 mm	Rockwell C56	95,000	32 to 150	00000000	000000


	M32	500 mm	4	32 mm	±0.05 mm/300 mm	28.3 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M32	1,000 mm	2	20 mm	±0.05 mm/300 mm	28.5 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M32	1,000 mm	4	32 mm	±0.05 mm/300 mm	28.3 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M40	500 mm	4	40 mm	±0.05 mm/300 mm	35.4 mm	Rockwell C56	95,000	32 to 150	00000000	000000
	M40	1,000 mm	4	40 mm	±0.05 mm/300 mm	35.4 mm	Rockwell C56	95,000	32 to 150	00000000	000000


	Alloy Steel



			1/2"-4	1 ft.	2	0.5"	±0.007"/1 ft.	0.4"	Rockwell C56	58,000	-65 to 300	00000000	00000


			1/2"-4	2 ft.	2	0.5"	±0.007"/1 ft.	0.4"	Rockwell C56	58,000	-65 to 300	00000000	000000
			3/4"-4	1 ft.	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	00000000	00000
			3/4"-4	2 ft.	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	00000000	000000
			3/4"-4	3 ft.	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	00000000	000000
			3/4"-4	4 ft.	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	00000000	000000
			3/4"-4	5 ft.	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	00000000	000000
			3/4"-4	6 ft.	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	00000000	000000
			1"-4	2 ft.	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	00000000	000000
			1"-4	2 ft.	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	00000000	000000
			1"-4	3 ft.	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	00000000	000000


			1"-4	3 ft.	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	00000000	000000
			1"-4	4 ft.	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	00000000	000000
			1"-4	4 ft.	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	00000000	000000
			1"-4	5 ft.	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	00000000	000000
			1"-4	5 ft.	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	00000000	000000
			1"-4	6 ft.	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	00000000	000000
			1"-4	6 ft.	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	00000000	000000
			1"-4	7 ft.	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	00000000	000000
			1"-4	7 ft.	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	00000000	000000
			1"-4	8 ft.	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	00000000	000000


			1"-4	8 ft.	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	00000000	000000
			1 1/2"-2	2 ft.	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	00000000	000000
			1 1/2"-2	3 ft.	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	00000000	000000
			1 1/2"-2	4 ft.	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	00000000	000000
			1 1/2"-2	5 ft.	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	00000000	000000
			1 1/2"-2	6 ft.	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	00000000	000000
			1 1/2"-2	7 ft.	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	00000000	000000
			1 1/2"-2	8 ft.	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	00000000	000000

Externally Threaded Ball Nuts—Right-Hand Threaded


Style A	Style B

Style C	Style D

Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.

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.

Wipers—Secure a way wiper on the end of a ball nut to sweep chips and other contaminants out of the way as it moves across the ball screw.

	Ball Screw Nuts															Wipers
	Style	Thread Size	Lg.	Wd.	Ht.	Dia.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each		Each
Carbon Steel



		A	M12	50 mm	—	—	30 mm	1	10 mm	M25	Rockwell C56	1,000	0.02 mm	32 to 150	00000000	0000000	———	0


		B	M16	50 mm	—	—	39 mm	4	16 mm	M30	Rockwell C56	1,500	0.04 mm	32 to 150	00000000	000000	———	0
		C	M32	90 mm	—	—	53 mm	4	32 mm	M50	Rockwell C56	3,700	0.03 mm	32 to 150	00000000	000000	———	0


		Black-Oxide Alloy Steel



				C	1/2"-4	1 3/4"	—	—	1 1/16"	2	0.5"	15/16"-16	Rockwell C56	850	0.015"	-65 to 300	00000000	00000	———	0


				C	3/4"-4	2 15/16"	—	—	1 5/16"	2	0.5"	1 1/4"-16	Rockwell C56	3,400	0.015"	-65 to 300	00000000	00000	———	0
				C	1"-4	3 1/8"	—	—	1 11/16"	2	0.5"	1 9/16"-18	Rockwell C56	4,250	0.015"	-65 to 300	00000000	000000	———	0
				C	1 1/2"-2	3 3/4"	2 1/4"	2 1/4"	2 5/8"	2	1"	2 1/4"-20	Rockwell C56	8,000	0.015"	-65 to 300	00000000	000000	0000000	0000000
				D	1"-4	3"	1 1/2"	1 1/2"	—	4	1"	1 9/16"-18	Rockwell C56	2,300	0.015"	-65 to 300	00000000	000000	———	0

Flange Ball Nuts—Right-Hand Threaded


Style E	Style F	Style G

Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.

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.

Wipers—Secure a way wiper on the end of a ball nut to sweep chips and other contaminants out of the way as it moves across the ball screw.

	Ball Screw Nuts																	Wipers
							Flange
	Style	Thread Size	Lg.	Wd.	Ht.	Dia.	Dia.	Thk.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each		Each
Carbon Steel



		E	M12	43 mm	—	—	23 mm	40 mm	10 mm	2	10 mm	32 mm	Rockwell C56	1,100	0.02 mm	32 to 150	00000000	0000000	———	0


		E	M15	56 mm	—	—	33 mm	57 mm	10 mm	4	20 mm	45 mm	Rockwell C56	2,250	0.04 mm	32 to 150	00000000	000000	———	0
		E	M15	61 mm	—	—	27 mm	48 mm	10 mm	4	16 mm	38 mm	Rockwell C56	2,200	0.04 mm	32 to 150	00000000	000000	———	0
		E	M20	77 mm	—	—	35 mm	58 mm	10 mm	4	20 mm	47 mm	Rockwell C56	2,750	0.04 mm	32 to 150	00000000	000000	———	0
		E	M32	88 mm	—	—	53 mm	86 mm	14 mm	4	32 mm	71 mm	Rockwell C56	5,800	0.05 mm	32 to 150	00000000	000000	———	0
		E	M32	108 mm	—	—	49 mm	80 mm	16 mm	2	20 mm	65 mm	Rockwell C56	4,900	0.04 mm	32 to 150	00000000	000000	———	0
		E	M40	101 mm	—	—	66 mm	106 mm	18 mm	4	40 mm	85 mm	Rockwell C56	9,550	0.07 mm	32 to 150	00000000	000000	———	0


		Black-Oxide Alloy Steel



				F	1/2"-4	1 3/4"	—	—	1 1/16"	2 39/64"	17/32"	2	0.5"	2 3/32"	Rockwell C56	850	0.015"	-65 to 300	00000000	000000	———	0


				F	3/4"-4	2 15/16"	—	—	1 5/16"	2 39/64"	17/32"	2	0.5"	2 3/32"	Rockwell C56	3,400	0.015"	-65 to 300	00000000	000000	———	0
				F	1"-4	3 1/8"	—	—	1 11/16"	3 15/64"	5/8"	2	0.5"	2 3/4"	Rockwell C56	4,250	0.015"	-65 to 300	00000000	000000	———	0
				G	1"-4	3"	1 1/2"	1 1/2"	—	3 15/64"	5/8"	4	1"	2 3/4"	Rockwell C56	2,300	0.015"	-65 to 300	00000000	000000	———	0
				G	1 1/2"-2	3 3/4"	2 1/4"	2 1/4"	—	4 15/16"	1 1/64"	2	1"	4 1/8"	Rockwell C56	8,000	0.015"	-65 to 300	00000000	000000	0000000	0000000

End Supports for Ball Screws and Precision Lead Screws

A set of ball bearings reduces friction and secures the end of a ball or lead screw. Note: The end of your ball or lead screw must be machined before installing it into an end support.

For Radial Loads About For Radial Loads

Image of Product. Front orientation. Contains Annotated. End Supports for Ball Screws and Precision Lead Screws. For Radial Loads.

End supports for radial loads handle loads perpendicular to the lead screw.

							Face Mounting Holes			Top Mounting Holes
	ID	Ht.	Ctr. Ht.	Wd.	Dp.	No. of Mounting Holes	Dia.	Ctr.-to-Ctr. Wd.	Ctr.-to-Ctr. Ht.	Dia.	Ctr.-to-Ctr. Wd.	Temp. Range, ° F		Each
Alloy Steel



		23/64"	2"	1"	2 3/4"	35/64"	6	9/32"	2"	1 3/8"	9/32"	2"	-40 to 210	000000000	0000000


		15/32"	1 7/8"	1"	3"	25/32"	6	9/32"	2 1/4"	1 1/8"	13/32"	2 1/4"	-40 to 210	000000000	000000
		19/32"	2 1/8"	1 1/8"	3 1/2"	1 55/64"	6	9/32"	2 1/2"	1 3/8"	13/32"	2 1/2"	-40 to 210	000000000	000000
		25/32"	2 3/4"	1 7/16"	4 1/2"	1 7/64"	6	15/32"	3 1/4"	1 3/4"	21/32"	3 1/4"	-40 to 210	0000000	000000
		1 3/16"	3 5/8"	1 7/8"	6 1/2"	1 21/32"	6	21/32"	4 3/4"	2"	29/32"	4 3/4"	-40 to 210	000000000	000000

For Combined Radial and Thrust Loads About For Combined Radial and Thrust Loads

Image of Product. Front orientation. Contains Annotated. End Supports for Ball Screws and Precision Lead Screws. For Combined Radial and Thrust Loads.

End supports for combined radial and thrust loads handle radial loads (perpendicular to the lead screw) and thrust loads (parallel to the lead screw).

						Combined Load Cap., lbf			Face Mounting Holes			Top Mounting Holes
	ID	Ht.	Ctr. Ht.	Wd.	Dp.	Static	Dynamic	No. of Mounting Holes	Dia.	Ctr.-to-Ctr. Wd.	Ctr.-to-Ctr. Ht.	Dia.	Ctr.-to-Ctr. Wd.	Temp. Range, ° F		Each
Alloy Steel



		23/64"	2"	1"	2 3/4"	1 3/16"	1,000	440	6	9/32"	2"	1 3/8"	9/32"	2"	-40 to 210	00000000	0000000


		15/32"	1 7/8"	1"	3"	1 11/32"	1,600	630	6	9/32"	2 1/4"	1 1/8"	13/32"	2 1/4"	-40 to 210	00000000	000000
		19/32"	2 1/8"	1 1/8"	3 1/2"	1 1/2"	2,300	1,050	6	9/32"	2 1/2"	1 3/8"	13/32"	2 1/2"	-40 to 210	00000000	000000
		43/64"	2 3/8"	1 1/4"	4"	1 21/32"	3,200	1,550	6	13/32"	2 7/8"	1 3/8"	17/32"	2 7/8"	-40 to 210	000000000	000000
		25/32"	2 3/4"	1 7/16"	4 1/2"	1 7/8"	3,200	1,800	6	15/32"	3 1/4"	1 3/4"	21/32"	3 1/4"	-40 to 210	00000000	000000
		63/64"	3 3/8"	1 3/4"	6"	1 15/16"	3,750	2,100	6	21/32"	4 1/4"	2"	29/32"	4 1/4"	-40 to 210	00000000	00000000
		1 3/16"	3 5/8"	1 7/8"	6 1/2"	2 1/16"	5,200	3,050	6	21/32"	4 3/4"	2"	29/32"	4 3/4"	-40 to 210	00000000	00000000
		1 49/64"	5 5/8"	2 13/16"	8 1/2"	3 15/32"	15,000	9,000	10	13/16"	6 5/8"	3 5/8"	1 1/32"	6 5/8"	-40 to 210	00000000	00000000


		Carbon Steel



				12 mm	43 mm	25 mm	60 mm	34 mm	730	1,450	4	—	—	—	6.6 mm	46 mm	0 to 160	0000000	000000


				15 mm	48 mm	28 mm	70 mm	38 mm	890	1,700	4	—	—	—	6.6 mm	54 mm	0 to 160	0000000	000000
				17 mm	64 mm	39 mm	86 mm	51 mm	1,300	3,050	4	—	—	—	9 mm	68 mm	0 to 160	0000000	000000

Fast-Travel Corrosion-Resistant Ball Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than ball screws with a single thread start. Suitable for use in harsh environments, these ball screws and nuts are made of stainless steel. Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. To ensure compatibility, select components that have the same thread 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—Right-Hand Threaded

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.

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

	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temp. Range, ° F		Each
17-4 PH Stainless Steel



	1/2"-4	1	2	0.5"	±0.005"/1 ft.	0.4"	Rockwell C38	150,000	-65 to 300	0000000	0000000


	1/2"-4	2	2	0.5"	±0.004"/1 ft.	0.4"	Rockwell C38	145,000	-65 to 300	000000	000000
	1/2"-4	4	2	0.5"	±0.004"/1 ft.	0.4"	Rockwell C38	145,000	-65 to 300	000000	000000
	1/2"-4	6	2	0.5"	±0.004"/1 ft.	0.4"	Rockwell C38	145,000	-65 to 300	000000	000000
	3/4"-4	3	2	0.5"	±0.005"/1 ft.	0.63"	Rockwell C38	150,000	-65 to 300	0000000	000000
	3/4"-4	6	2	0.5"	±0.005"/1 ft.	0.63"	Rockwell C38	150,000	-65 to 300	0000000	000000

Externally Threaded Ball Nuts—Right-Hand Threaded

Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Fast-Travel Corrosion-Resistant Ball Screws and Nuts, Ball Nuts, Externally Threaded Nut.

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.

	Lg.	Dia.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
17-4 PH Stainless Steel



	1/2"-4	1 3/4"	1 1/16"	2	0.5"	15/16"-16	Rockwell C38	140	0.007"	-65 to 300	0000000	0000000


	3/4"-4	2 15/16"	1 5/16"	2	0.5"	1 1/4"-16	Rockwell C38	600	0.007"	-65 to 300	0000000	000000

Flange Ball Nuts—Right-Hand Threaded

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.

				Flange
	Thread Size	Lg.	Dia.	Dia.	Thk.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
17-4 PH Stainless Steel



		1/2"-4	1 29/32"	1 1/16"	2 19/32"	17/32"	2	0.5"	2 3/32"	Rockwell C38	140	0.007"	-65 to 300	0000000	0000000


		3/4"-4	2 15/16"	1 5/16"	2 19/32"	17/32"	2	0.5"	2 3/32"	Rockwell C38	600	0.007"	-65 to 300	0000000	000000

Self-Stopping Ball Screws and Nuts

Stop Pin Shown Installed

Keep your ball screw spinning without the ball nut damaging your system—a clutch-like collar inside the ball nut prevents it from travelling past the stop pins. Install the included stop pins anywhere along the length of the ball screw by drilling a hole in the valley of the threads (also known as the root) and pressing in the stop pin. When the collar meets the stop pin, the ball nut disengages from the threads and begins to idle. To start the ball nut travelling again, spin the ball screw in the opposite direction. All components are black-oxide steel and have mild corrosion resistance. To ensure compatibility, select components that have the same thread 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—Right-Hand Threaded

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.

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

	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temp. Range, ° F	No. of Pins Included		Each
Black-Oxide Alloy Steel



	5/8"-6	1	2	0.188"	0.562"	Rockwell C56	95,000	-65 to 300	2	0000000	0000000


	5/8"-6	2	2	0.188"	0.562"	Rockwell C56	95,000	-65 to 300	2	0000000	000000
	5/8"-6	3	2	0.188"	0.562"	Rockwell C56	95,000	-65 to 300	2	0000000	000000
	1"-4	2	2	0.274"	0.84"	Rockwell C56	78,000	-65 to 300	2	0000000	000000
	1"-4	3	2	0.274"	0.84"	Rockwell C56	78,000	-65 to 300	2	0000000	000000
	1"-4	4	2	0.274"	0.84"	Rockwell C56	78,000	-65 to 300	2	0000000	000000

Externally Threaded Ball Nuts—Right-Hand Threaded

Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Self-Stopping Ball Screws and Nuts, Ball Nuts, Externally Threaded Nut.

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.

	Lg.	Dia.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
Black-Oxide Alloy Steel



	5/8"-6	1 7/8"	1"	2	0.188"	15/16"-16	Rockwell C56	300	0.006"	-65 to 300	0000000	0000000


	1"-4	2 23/32"	1 5/8"	2	0.274"	1.563"-18	Rockwell C56	900	0.008"	-65 to 300	0000000	000000

Flange Ball Nuts—Right-Hand Threaded

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.

				Flange
	Thread Size	Lg.	Dia.	Dia.	Thk.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
Black-Oxide Alloy Steel



		5/8"-6	1 7/8"	1"	2"	13/32"	2	0.188"	1 5/8"	Rockwell C56	300	0.006"	-65 to 300	0000000	0000000


		1"-4	2 23/32"	1 5/8"	3 15/64"	5/8"	2	0.274"	2 3/4"	Rockwell C56	900	0.008"	-65 to 300	0000000	000000

Corrosion-Resistant Ball Screws and Nuts


	Ball Nuts, Externally Threaded Nut, Style A	Ball Nuts, Externally Threaded Nut, Style B	Flange Nut Ball Nuts Style C	Flange Nut Ball Nuts Style D

Suitable for use in harsh environments, these ball screws and nuts are made of stainless steel. 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 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—Right-Hand Threaded

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.

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

	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temp. Range, ° F		Each
17-4 PH Stainless Steel



	3/8"-8	1	1	0.125"	±0.005"/1 ft.	0.3"	Rockwell C38	150,000	-65 to 300	0000000	0000000


	3/8"-8	2	1	0.125"	±0.004"/1 ft.	0.3"	Rockwell C38	145,000	-65 to 300	000000	000000
	3/8"-8	4	1	0.125"	±0.004"/1 ft.	0.3"	Rockwell C38	145,000	-65 to 300	000000	000000
	5/8"-5	2	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C38	145,000	-65 to 300	000000	000000
	5/8"-5	4	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C38	145,000	-65 to 300	000000	000000
	5/8"-5	6	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C38	145,000	-65 to 300	000000	000000

Externally Threaded Ball Nuts—Right-Hand Threaded


Style A	Style B

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.

	Thread Size	Lg.	Wd.	Ht.	Dia.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
17-4 PH Stainless Steel



	A	3/8"-8	1"	—	—	3/4"	1	0.125"	0.664"-32	Rockwell C38	25	0.007"	-65 to 300	000000	0000000


	B	5/8"-5	1 23/32"	1"	1"	—	1	0.2"	15/16"-16	Rockwell C38	170	0.007"	-65 to 300	0000000	000000

Flange Ball Nuts—Right-Hand Threaded


Style C	Style D

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.

							Flange
	Style	Thread Size	Lg.	Wd.	Ht.	Dia.	Dia.	Thk.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash	Temp. Range, ° F		Each
17-4 PH Stainless Steel



		C	3/8"-8	1"	—	—	3/4"	1 19/32"	17/64"	1	0.125"	1 15/64"	Rockwell C38	25	0.007"	-65 to 300	0000000	0000000


		D	5/8"-5	1 47/64"	1"	1"	—	2 19/32"	17/32"	1	0.2"	2 3/32"	Rockwell C38	170	0.007"	-65 to 300	0000000	000000