1"-4 Ball Screws | McMaster-Carr

Filter by

System of Measurement

Inch

Component

Ball Nut

Ball Screw

Ball Screw with One Machined End

Thread Direction

Length

Nut Type

Travel Distance per Turn

1/4"

0.274"

0.5"

Number of Thread Starts

Threading

Thread Type

Diameter

Root Diameter

Material

Dynamic Thrust Load Capacity

Less than 1,000 lb.

1,000 lb. to 1,999 lb.

2,000 lb. to 9,999 lb.

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

Minimum Temperature

Hardness

REACH

RoHS

Maximum Temperature

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Heat Treatment

External Thread Size

Tensile Strength

60,000 psi to 79,999 psi

100,000 psi or greater

Flange Diameter

42 Products

Ball Screws and Nuts


	A	Ball Nuts, Externally Threaded Nut, Style B	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—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"-4	2	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N291	0000000


	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

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



	1"-4	1	1	0.25"	±0.007"/1 ft.	0.84"	Rockwell C56	122,000	-65 to 300	3405N391	000000


	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

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



		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	3405N453	0000000


		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	3405N454	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	3405N455	00000000

Externally Threaded Ball Nuts—Right-Hand Threaded

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.

	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



	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	0000000

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	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	0000000

Flange Ball Nuts—Right-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	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	0000000

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	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	0000000


		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"-4	2	2	0.5"	±0.007"/1 ft.	0.87"	Rockwell C56	126,500	-65 to 300	3405N341	0000000


	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

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.

	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
Black-Oxide Alloy Steel



	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	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

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.

							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
Black-Oxide Alloy Steel



		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	0000000


		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

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



	1"-4	2	2	0.274"	0.84"	Rockwell C56	78,000	-65 to 300	2	2385N16	0000000


	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



	1"-4	2 23/32"	1 5/8"	2	0.274"	1.563"-18	Rockwell C56	900	0.008"	-65 to 300	2385N19	0000000

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



		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	0000000