Alloy Steel Ball Screw Nuts

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System of Measurement

Thread Size

Component

Nut Type

Length

Travel Distance per Turn

Diameter

Thread Direction

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

Number of Thread Starts

Thread Type

Root Diameter

Material

Threading

Center Height

Maximum Backlash

Mounting Hole Thread Size

Flange Width

Number of Mounting Holes

Hardness

Rockwell C31

Rockwell C56

Rockwell C58

Rockwell C58 to Rockwell C62

Width

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

Yes

DFARS Specialty Metals

REACH

RoHS

Export Control Classification Number (ECCN)

EAR99

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148 Products

Ball Screws and Nuts


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

Ball Nuts Flange Nut Style D	Ball Nuts Flange Nut 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	6624K66	0000000


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

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
Alloy Steel



	3/8"-8	1	1	0.125"	±0.007"/1 ft.	0.3"	Rockwell C56	85,000	-65 to 300	3405N432	0000000


	3/8"-8	2	1	0.125"	±0.007"/1"	0.3"	Rockwell C56	85,000	-65 to 300	3405N433	000000
	5/8"-5	1	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N439	00000
	5/8"-5	2	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N441	00000
	5/8"-5	3	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N442	00000
	5/8"-5	4	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N443	000000
	5/8"-5	5	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N444	000000
	5/8"-5	6	1	0.2"	±0.004"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N445	000000
	3/4"-5	1	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	3405N281	00000
	3/4"-5	2	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	3405N282	000000
	3/4"-5	3	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	3405N283	000000


	3/4"-5	4	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	3405N284	000000
	3/4"-5	5	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	3405N285	000000
	3/4"-5	6	1	0.2"	±0.007"/1 ft.	0.65"	Rockwell C56	92,500	-65 to 300	3405N286	000000
	1"-4	2	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N291	000000
	1"-4	3	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N292	000000
	1"-4	4	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N293	000000
	1"-4	5	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N294	000000
	1"-4	6	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N295	000000
	1"-4	7	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N296	000000
	1"-4	8	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N297	000000


	1 1/2"-2	2	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	3405N371	000000
	1 1/2"-2	3	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	3405N372	000000
	1 1/2"-2	4	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	3405N373	000000
	1 1/2"-2	5	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	3405N374	000000
	1 1/2"-2	6	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	3405N375	000000
	1 1/2"-2	7	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	3405N376	000000
	1 1/2"-2	8	1	0.5"	±0.007"/1 ft.	1.26"	Rockwell C56	183,500	-65 to 300	3405N377	000000
	1 1/2"-4	2	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	3405N311	000000
	1 1/2"-4	3	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	3405N312	000000
	1 1/2"-4	4	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	3405N313	000000


	1 1/2"-4	5	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	3405N314	000000
	1 1/2"-4	6	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	3405N315	000000
	1 1/2"-4	7	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	3405N316	000000
	1 1/2"-4	8	1	0.25"	±0.007"/1 ft.	1.375"	Rockwell C56	200,000	-65 to 300	3405N317	000000
	2 1/4"-2	2	1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	3405N615	000000
	2 1/4"-2	3	1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	3405N616	00000000
	2 1/4"-2	4	1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	3405N627	00000000
	2 1/4"-2	5	1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	3405N644	00000000
	2 1/4"-2	6	1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	3405N669	00000000
	2 1/4"-2	7	1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	3405N692	00000000


	2 1/4"-2	8	1	0.5"	±0.004"/1 ft.	1.85"	Rockwell C58 to Rockwell C62	120,000	-65 to 300	3405N696	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	3405N381	000000


	5/8"-5	2	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N382	00000
	5/8"-5	3	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N383	00000
	5/8"-5	6	1	0.2"	±0.007"/1 ft.	0.5"	Rockwell C56	72,500	-65 to 300	3405N384	000000
	1"-4	1	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N391	00000
	1"-4	2	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N392	000000
	1"-4	3	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N393	000000
	1"-4	6	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N394	000000

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	3405N458	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	3405N481	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	3405N459	00000	2528N34	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	3405N461	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	3405N462	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	3405N731	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	3405N463	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	3405N456	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	3405N457	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	6624K73	0000000


	M16	36	42	32.5	16	1	5	Rockwell C58	1,200	0.1	5 to 175	6624K27	000000
	M20	35	48	39	17	1	5	Rockwell C58	1,300	0.1	5 to 175	6624K29	000000
	M20	58	48	46	18	1	10	Rockwell C58	2,350	0.1	5 to 175	6624K31	000000
	M25	35	60	45	20	1	5	Rockwell C58	1,500	0.1	5 to 175	6624K33	000000
	M25	94	60	55	23	1	10	Rockwell C58	7,000	0.1	5 to 175	6624K35	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	6624K72	0000000


		C	M16	40 mm	—	—	34 mm	—	54	40	10 mm	1	5 mm	—	Rockwell C58	1,200	0.1 mm	5 to 175	6624K41	000000
		C	M20	40 mm	—	—	40 mm	—	60	46	10 mm	1	5 mm	—	Rockwell C58	1,300	0.1 mm	5 to 175	6624K43	000000
		C	M20	64 mm	—	—	52 mm	—	82	64	12 mm	1	10 mm	—	Rockwell C58	2,350	0.1 mm	5 to 175	6624K44	000000
		C	M25	40 mm	—	—	43 mm	—	67	50	10 mm	1	5 mm	—	Rockwell C58	1,500	0.1 mm	5 to 175	6624K46	000000
		C	M25	98 mm	—	—	60 mm	—	96	72	15 mm	1	10 mm	—	Rockwell C58	7,000	0.1 mm	5 to 175	6624K48	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	3405N469	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	3405N471	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	3405N472	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	3405N473	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	3405N77	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	3405N482	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	3405N483	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	3405N401	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	3405N402	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	3405N474	000000

Fast-Travel Ball Screws and Nuts


Ball Nuts, Externally Threaded Nut, Style C	Ball Nuts, Externally Threaded Nut, Style D	Ball Nuts Flange Nut Style F	Ball Nuts Flange Nut 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

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



	1/2"-4	1	2	0.5"	±0.007"/1 ft.	0.4"	Rockwell C56	58,000	-65 to 300	3405N361	000000


	1/2"-4	2	2	0.5"	±0.007"/1 ft.	0.4"	Rockwell C56	58,000	-65 to 300	3405N362	000000
	3/4"-4	1	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	3405N321	00000
	3/4"-4	2	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	3405N322	000000
	3/4"-4	3	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	3405N323	000000
	3/4"-4	4	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	3405N324	000000
	3/4"-4	5	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	3405N325	000000
	3/4"-4	6	2	0.5"	±0.007"/1 ft.	0.63"	Rockwell C56	92,500	-65 to 300	3405N326	000000
	1"-4	2	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	3405N341	000000
	1"-4	2	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	3405N331	000000
	1"-4	3	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	3405N342	000000


	1"-4	3	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	3405N332	000000
	1"-4	4	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	3405N343	000000
	1"-4	4	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	3405N333	000000
	1"-4	5	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	3405N344	000000
	1"-4	5	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	3405N334	000000
	1"-4	6	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	3405N345	000000
	1"-4	6	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	3405N335	000000
	1"-4	7	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	3405N346	000000
	1"-4	7	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	3405N336	000000
	1"-4	8	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	3405N347	000000


	1"-4	8	4	1"	±0.007"/1 ft.	0.84"	Rockwell C56	123,000	-65 to 300	3405N337	000000
	1 1/2"-2	2	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	3405N351	000000
	1 1/2"-2	3	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	3405N352	000000
	1 1/2"-2	4	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	3405N353	000000
	1 1/2"-2	5	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	3405N354	000000
	1 1/2"-2	6	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	3405N355	000000
	1 1/2"-2	7	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	3405N356	000000
	1 1/2"-2	8	2	1"	±0.007"/1 ft.	1.14"	Rockwell C56	166,000	-65 to 300	3405N357	000000

Externally Threaded Ball Nuts—Right-Hand Threaded


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
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	3405N464	000000	———	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	3405N465	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	3405N466	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	3405N467	000000	2528N42	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	3405N468	000000	———	0

Flange Ball Nuts—Right-Hand Threaded


Style F	Style G

Image of Attribute. Front orientation. Contains Annotated. Fast-Travel Ball Screws and Nuts.

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
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	3405N405	0000000	———	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	3405N403	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	3405N404	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	3405N406	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	3405N407	000000	2528N42	0000000

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	2385N11	0000000


	5/8"-6	2	2	0.188"	0.562"	Rockwell C56	95,000	-65 to 300	2	2385N12	000000
	5/8"-6	3	2	0.188"	0.562"	Rockwell C56	95,000	-65 to 300	2	2385N13	000000
	1"-4	2	2	0.274"	0.84"	Rockwell C56	78,000	-65 to 300	2	2385N16	000000
	1"-4	3	2	0.274"	0.84"	Rockwell C56	78,000	-65 to 300	2	2385N17	000000
	1"-4	4	2	0.274"	0.84"	Rockwell C56	78,000	-65 to 300	2	2385N28	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	2385N14	0000000


	1"-4	2 23/32"	1 5/8"	2	0.274"	1.563"-18	Rockwell C56	900	0.008"	-65 to 300	2385N19	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	2385N15	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	2385N21	000000

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	4543N11	000000000


	M15	642	5	5	±0.023 mm/300 mm	522	14.44	Rockwell C60	105,000	4543N12	00000000
	M20	680	5	4	±0.023 mm/300 mm	561	19.15	Rockwell C60	105,000	4543N13	00000000
	M20	680	5	5	±0.023 mm/300 mm	561	19.05	Rockwell C60	105,000	4543N14	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	4543N15	000000000


		M15	45	35	5	5	4	14	Rockwell C60	12,000	0.03	-40 to 350	Required	4543N16	00000000
		M20	65	42	5	4	4	18	Rockwell C60	15,100	0.03	-40 to 350	Required	4543N17	00000000
		M20	65	42	5	5	4	18	Rockwell C60	20,600	0.03	-40 to 350	Required	4543N18	00000000