1/2"-4 Shafts | McMaster-Carr

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System of Measurement

Thread Size

Component

Length

Nut Type

Material

Thread Direction

Travel Distance per Turn

Root Diameter

Flange Material

Number of Thread Starts

Diameter

1 1/16"

Threading

Fully Threaded

Thread Type

Ball

Dynamic Thrust Load Capacity

Less than 1,000 lb.

Performance

Corrosion Resistant

Fast Travel

Export Control Classification Number (ECCN)

EAR99

REACH

Compliant

RoHS

Compliant

DFARS Specialty Metals

Maximum Temperature

Minimum Temperature

External Thread Size

Hardness

Tensile Strength

External Thread Type

10 Products

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

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

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

Fast-Travel Ball Screws and Nuts


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

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	00000000	000000


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

Externally Threaded Ball Nuts—Right-Hand Threaded

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

Style C

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.	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	1/2"-4	1 3/4"	1 1/16"	2	0.5"	15/16"-16	Rockwell C56	850	0.015"	-65 to 300	00000000	000000

Flange Ball Nuts—Right-Hand Threaded

Style F

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.	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	1/2"-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	0000000