Fully-Threaded Ball Screws

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Thread Size

Component

System of Measurement

Inch

Metric

Travel Distance per Turn

Root Diameter

Diameter

Nut Type

Thread Direction

Threading

Material

17-4 PH Stainless Steel

Steel

Number of Thread Starts

Thread Type

Ball

Metric Ball

UNC

Dynamic Thrust Load Capacity

Less than 1,000 lb.

Maximum Backlash

0.05 mm

Tensile Strength

Less than 50,000 psi

50,000 psi to 69,999 psi

70,000 psi to 79,999 psi

80,000 psi to 99,999 psi

100,000 psi or greater

Thread Fabrication

Hardness

Rockwell C58 to Rockwell C62

Flange Material

Minimum Temperature

Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

Flange Width

Maximum Temperature

191 Products

About Thumb Screw and Binding Post Materials

Selecting Compatible Lead Screws and Nuts

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.

Black-oxide alloy steel ball screws and nuts have mild corrosion resistance.

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

For technical drawings and 3-D models, click on a part number.

Ball Screws with Flange Ball Nut—Right-Hand Threaded

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

	Ball Screw			Flange Ball Nut
Thread Size	Lg., mm	Root Dia., mm	Tensile Strength, psi	Lg., mm	Dia., mm	Length Tolerance	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Dynamic Thrust Load Capacity, lbs.	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 per 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 per 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 per 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 per 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 per 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 per 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 per 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 per 300 mm	Rockwell C58	560	0.05	5° to 175°	0000000	000000

Ball Screws—Right-Hand Threaded

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

Carbon Steel
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
M14	500 mm	1	4mm	±0.210 mm per 300 mm	11.5mm	Rockwell C58	21,000	5° to 175°	0000000	000000
M14	1,000 mm	1	4mm	±0.210 mm per 300 mm	11.5mm	Rockwell C58	21,000	5° to 175°	0000000	000000
M16	500 mm	1	5mm	±0.210 mm per 300 mm	13.5mm	Rockwell C58	21,000	5° to 175°	0000000	000000
M16	1,000 mm	1	5mm	±0.210 mm per 300 mm	13.5mm	Rockwell C58	21,000	5° to 175°	000000	000000
M20	500 mm	1	5mm	±0.210 mm per 300 mm	17.2mm	Rockwell C58	21,000	5° to 175°	0000000	000000
M20	1,000 mm	1	5mm	±0.210 mm per 300 mm	17.2mm	Rockwell C58	21,000	5° to 175°	000000	000000
M20	1,500 mm	1	10mm	±0.210 mm per 300 mm	16.4mm	Rockwell C58	21,000	5° to 175°	000000	000000
M25	500 mm	1	5mm	±0.210 mm per 300 mm	22.2mm	Rockwell C58	21,000	5° to 175°	0000000	000000
M25	1,000 mm	1	5mm	±0.210 mm per 300 mm	22.2mm	Rockwell C58	21,000	5° to 175°	0000000	000000
M25	1,500 mm	1	10mm	±0.210 mm per 300 mm	20.2mm	Rockwell C58	21,000	5° to 175°	0000000	000000
Alloy Steel
3/8"-8	1 ft.	1	0.125"	±0.007" per ft.	0.3"	Rockwell C56	43,000	-65° to 300°	00000000	00000
3/8"-8	2 ft.	1	0.125"	±0.007" per in.	0.3"	Rockwell C56	43,000	-65° to 300°	00000000	000000
5/8"-5	1 ft.	1	0.2"	±0.004" per ft.	0.5"	Rockwell C56	72,500	-65° to 300°	00000000	00000
5/8"-5	2 ft.	1	0.2"	±0.004" per ft.	0.5"	Rockwell C56	72,500	-65° to 300°	00000000	00000
5/8"-5	3 ft.	1	0.2"	±0.004" per ft.	0.5"	Rockwell C56	72,500	-65° to 300°	00000000	000000
5/8"-5	4 ft.	1	0.2"	±0.004" per ft.	0.5"	Rockwell C56	72,500	-65° to 300°	00000000	000000
5/8"-5	5 ft.	1	0.2"	±0.004" per ft.	0.5"	Rockwell C56	72,500	-65° to 300°	00000000	000000
5/8"-5	6 ft.	1	0.2"	±0.004" per ft.	0.5"	Rockwell C56	72,500	-65° to 300°	00000000	000000
3/4"-5	1 ft.	1	0.2"	±0.007" per ft.	0.65"	Rockwell C56	92,500	-65° to 300°	00000000	00000
3/4"-5	2 ft.	1	0.2"	±0.007" per ft.	0.65"	Rockwell C56	92,500	-65° to 300°	00000000	00000
3/4"-5	3 ft.	1	0.2"	±0.007" per ft.	0.65"	Rockwell C56	92,500	-65° to 300°	00000000	00000
3/4"-5	4 ft.	1	0.2"	±0.007" per ft.	0.65"	Rockwell C56	92,500	-65° to 300°	00000000	000000
3/4"-5	5 ft.	1	0.2"	±0.007" per ft.	0.65"	Rockwell C56	92,500	-65° to 300°	00000000	000000
3/4"-5	6 ft.	1	0.2"	±0.007" per ft.	0.65"	Rockwell C56	92,500	-65° to 300°	00000000	000000
1"-4	2 ft.	1	0.25"	±0.007" per ft.	0.84"	Rockwell C56	122,000	-65° to 300°	00000000	00000
1"-4	3 ft.	1	0.25"	±0.007" per ft.	0.84"	Rockwell C56	122,000	-65° to 300°	00000000	00000
1"-4	4 ft.	1	0.25"	±0.007" per ft.	0.84"	Rockwell C56	122,000	-65° to 300°	00000000	000000
1"-4	5 ft.	1	0.25"	±0.007" per ft.	0.84"	Rockwell C56	122,000	-65° to 300°	00000000	000000
1"-4	6 ft.	1	0.25"	±0.007" per ft.	0.84"	Rockwell C56	122,000	-65° to 300°	00000000	000000
1"-4	7 ft.	1	0.25"	±0.007" per ft.	0.84"	Rockwell C56	122,000	-65° to 300°	00000000	000000
1"-4	8 ft.	1	0.25"	±0.007" per ft.	0.84"	Rockwell C56	122,000	-65° to 300°	00000000	000000
1 1/2"-2	2 ft.	1	0.5"	±0.007" per ft.	1.26"	Rockwell C56	183,500	-65° to 300°	00000000	000000
1 1/2"-2	3 ft.	1	0.5"	±0.007" per ft.	1.26"	Rockwell C56	183,500	-65° to 300°	00000000	000000
1 1/2"-2	4 ft.	1	0.5"	±0.007" per ft.	1.26"	Rockwell C56	183,500	-65° to 300°	00000000	000000
1 1/2"-2	5 ft.	1	0.5"	±0.007" per ft.	1.26"	Rockwell C56	183,500	-65° to 300°	00000000	000000
1 1/2"-2	6 ft.	1	0.5"	±0.007" per ft.	1.26"	Rockwell C56	183,500	-65° to 300°	00000000	000000
1 1/2"-2	7 ft.	1	0.5"	±0.007" per ft.	1.26"	Rockwell C56	183,500	-65° to 300°	00000000	000000
1 1/2"-2	8 ft.	1	0.5"	±0.007" per ft.	1.26"	Rockwell C56	183,500	-65° to 300°	00000000	000000
1 1/2"-4	2 ft.	1	0.25"	±0.007" per ft.	1.375"	Rockwell C56	200,000	-65° to 300°	00000000	000000
1 1/2"-4	3 ft.	1	0.25"	±0.007" per ft.	1.375"	Rockwell C56	200,000	-65° to 300°	00000000	000000
1 1/2"-4	4 ft.	1	0.25"	±0.007" per ft.	1.375"	Rockwell C56	200,000	-65° to 300°	00000000	000000
1 1/2"-4	5 ft.	1	0.25"	±0.007" per ft.	1.375"	Rockwell C56	200,000	-65° to 300°	00000000	000000
1 1/2"-4	6 ft.	1	0.25"	±0.007" per ft.	1.375"	Rockwell C56	200,000	-65° to 300°	00000000	000000
1 1/2"-4	7 ft.	1	0.25"	±0.007" per ft.	1.375"	Rockwell C56	200,000	-65° to 300°	00000000	000000
1 1/2"-4	8 ft.	1	0.25"	±0.007" per ft.	1.375"	Rockwell C56	200,000	-65° to 300°	00000000	000000
Black-Oxide Alloy Steel
2 1/4"-2	2 ft.	1	0.5"	±0.004" per ft.	1.85"	Rockwell C58-62	120,000	-65° to 300°	00000000	000000
2 1/4"-2	3 ft.	1	0.5"	±0.004" per ft.	1.85"	Rockwell C58-62	120,000	-65° to 300°	00000000	000000
2 1/4"-2	4 ft.	1	0.5"	±0.004" per ft.	1.85"	Rockwell C58-62	120,000	-65° to 300°	00000000	00000000
2 1/4"-2	5 ft.	1	0.5"	±0.004" per ft.	1.85"	Rockwell C58-62	120,000	-65° to 300°	00000000	00000000
2 1/4"-2	6 ft.	1	0.5"	±0.004" per ft.	1.85"	Rockwell C58-62	120,000	-65° to 300°	00000000	00000000
2 1/4"-2	7 ft.	1	0.5"	±0.004" per ft.	1.85"	Rockwell C58-62	120,000	-65° to 300°	00000000	00000000
2 1/4"-2	8 ft.	1	0.5"	±0.004" per ft.	1.85"	Rockwell C58-62	120,000	-65° to 300°	00000000	00000000

Ball Screws—Left-Hand Threaded

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

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

Fast-Travel Ball Screws and Nuts

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.

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, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.

For technical drawings and 3-D models, click on a part number.

Ball Screws—Right-Hand Threaded

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

Carbon Steel
Thread Size	Lg.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temperature Range, °F		Each
M12	500mm	2	10mm	±0.05 mm per 300 mm	9.6mm	Rockwell C56	95,000	32° to 150°	00000000	0000000
M12	1,000mm	2	10mm	±0.05 mm per 300 mm	9.6mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M15	500mm	4	16mm	±0.05 mm per 300 mm	12.9mm	Rockwell C56	95,000	32° to 150°	00000000	00000
M15	500mm	4	20mm	±0.05 mm per 300 mm	12.3mm	Rockwell C56	95,000	32° to 150°	00000000	00000
M15	1,000mm	4	16mm	±0.05 mm per 300 mm	12.9mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M15	1,000mm	4	20mm	±0.05 mm per 300 mm	12.3mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M16	500mm	4	16mm	±0.05 mm per 300 mm	13.3mm	Rockwell C56	95,000	32° to 150°	00000000	00000
M16	1,000mm	4	16mm	±0.05 mm per 300 mm	13.3mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M20	500mm	4	20mm	±0.05 mm per 300 mm	17mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M20	1,000mm	4	20mm	±0.05 mm per 300 mm	17mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M32	500mm	2	20mm	±0.05 mm per 300 mm	28.5mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M32	500mm	4	32mm	±0.05 mm per 300 mm	28.3mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M32	1,000mm	2	20mm	±0.05 mm per 300 mm	28.5mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M32	1,000mm	4	32mm	±0.05 mm per 300 mm	28.3mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M40	500mm	4	40mm	±0.05 mm per 300 mm	35.4mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M40	1,000mm	4	40mm	±0.05 mm per 300 mm	35.4mm	Rockwell C56	95,000	32° to 150°	00000000	000000
Alloy Steel
1/2"-4	1ft.	2	0.5"	±0.007" per ft.	0.4"	Rockwell C56	58,000	-65° to 300°	00000000	00000
1/2"-4	2ft.	2	0.5"	±0.007" per ft.	0.4"	Rockwell C56	58,000	-65° to 300°	00000000	000000
3/4"-4	1ft.	2	0.5"	±0.007" per ft.	0.63"	Rockwell C56	92,500	-65° to 300°	00000000	00000
3/4"-4	2ft.	2	0.5"	±0.007" per ft.	0.63"	Rockwell C56	92,500	-65° to 300°	00000000	00000
3/4"-4	3ft.	2	0.5"	±0.007" per ft.	0.63"	Rockwell C56	92,500	-65° to 300°	00000000	000000
3/4"-4	4ft.	2	0.5"	±0.007" per ft.	0.63"	Rockwell C56	92,500	-65° to 300°	00000000	000000
3/4"-4	5ft.	2	0.5"	±0.007" per ft.	0.63"	Rockwell C56	92,500	-65° to 300°	00000000	000000
3/4"-4	6ft.	2	0.5"	±0.007" per ft.	0.63"	Rockwell C56	92,500	-65° to 300°	00000000	000000
1"-4	2ft.	2	0.5"	±0.007" per ft.	0.87"	Rockwell C56	126,500	-65° to 300°	00000000	000000
1"-4	2ft.	4	1"	±0.007" per ft.	0.84"	Rockwell C56	123,000	-65° to 300°	00000000	000000
1"-4	3ft.	2	0.5"	±0.007" per ft.	0.87"	Rockwell C56	126,500	-65° to 300°	00000000	000000
1"-4	3ft.	4	1"	±0.007" per ft.	0.84"	Rockwell C56	123,000	-65° to 300°	00000000	000000
1"-4	4ft.	2	0.5"	±0.007" per ft.	0.87"	Rockwell C56	126,500	-65° to 300°	00000000	000000
1"-4	4ft.	4	1"	±0.007" per ft.	0.84"	Rockwell C56	123,000	-65° to 300°	00000000	000000
1"-4	5ft.	2	0.5"	±0.007" per ft.	0.87"	Rockwell C56	126,500	-65° to 300°	00000000	000000
1"-4	5ft.	4	1"	±0.007" per ft.	0.84"	Rockwell C56	123,000	-65° to 300°	00000000	000000
1"-4	6ft.	2	0.5"	±0.007" per ft.	0.87"	Rockwell C56	126,500	-65° to 300°	00000000	000000
1"-4	6ft.	4	1"	±0.007" per ft.	0.84"	Rockwell C56	123,000	-65° to 300°	00000000	000000
1"-4	7ft.	2	0.5"	±0.007" per ft.	0.87"	Rockwell C56	126,500	-65° to 300°	00000000	000000
1"-4	7ft.	4	1"	±0.007" per ft.	0.84"	Rockwell C56	123,000	-65° to 300°	00000000	000000
1"-4	8ft.	2	0.5"	±0.007" per ft.	0.87"	Rockwell C56	126,500	-65° to 300°	00000000	000000
1"-4	8ft.	4	1"	±0.007" per ft.	0.84"	Rockwell C56	123,000	-65° to 300°	00000000	000000
1 1/2"-2	2ft.	2	1"	±0.007" per ft.	1.14"	Rockwell C56	166,000	-65° to 300°	00000000	000000
1 1/2"-2	3ft.	2	1"	±0.007" per ft.	1.14"	Rockwell C56	166,000	-65° to 300°	00000000	000000
1 1/2"-2	4ft.	2	1"	±0.007" per ft.	1.14"	Rockwell C56	166,000	-65° to 300°	00000000	000000
1 1/2"-2	5ft.	2	1"	±0.007" per ft.	1.14"	Rockwell C56	166,000	-65° to 300°	00000000	000000
1 1/2"-2	6ft.	2	1"	±0.007" per ft.	1.14"	Rockwell C56	166,000	-65° to 300°	00000000	000000
1 1/2"-2	7ft.	2	1"	±0.007" per ft.	1.14"	Rockwell C56	166,000	-65° to 300°	00000000	000000
1 1/2"-2	8ft.	2	1"	±0.007" per ft.	1.14"	Rockwell C56	166,000	-65° to 300°	00000000	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.

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

For technical drawings and 3-D models, click on a part number.

Ball Screws—Right-Hand Threaded

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

Black-Oxide Alloy Steel
Thread Size	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temperature Range, °F	No. of Pins Included		Each
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	95,000	-65° to 300°	2	0000000	000000
1"-4	3	2	0.274"	0.84"	Rockwell C56	95,000	-65° to 300°	2	0000000	000000
1"-4	4	2	0.274"	0.84"	Rockwell C56	95,000	-65° to 300°	2	0000000	000000

Corrosion-Resistant Ball Screws and Nuts

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.

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

For technical drawings and 3-D models, click on a part number.

Ball Screws—Right-Hand Threaded

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

17-4 PH Stainless Steel
Thread Size	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temperature Range, °F		Each
3/8"-8	1	1	0.125"	±0.005" per ft.	0.3"	Rockwell C38	150,000	-65° to 300°	0000000	0000000
3/8"-8	2	1	0.125"	±0.004" per ft.	0.3"	Rockwell C38	145,000	-65° to 300°	000000	000000
3/8"-8	4	1	0.125"	±0.004" per ft.	0.3"	Rockwell C38	145,000	-65° to 300°	000000	000000
5/8"-5	2	1	0.2"	±0.004" per ft.	0.5"	Rockwell C38	145,000	-65° to 300°	000000	000000
5/8"-5	4	1	0.2"	±0.004" per ft.	0.5"	Rockwell C38	145,000	-65° to 300°	000000	000000
5/8"-5	6	1	0.2"	±0.004" per ft.	0.5"	Rockwell C38	145,000	-65° to 300°	000000	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.

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

For technical drawings and 3-D models, click on a part number.

Ball Screws—Right-Hand Threaded

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

17-4 PH Stainless Steel
Thread Size	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temperature Range, °F		Each
1/2"-4	1	2	0.5"	±0.005" per ft.	0.4"	Rockwell C38	150,000	-65° to 300°	0000000	0000000
1/2"-4	2	2	0.5"	±0.004" per ft.	0.4"	Rockwell C38	145,000	-65° to 300°	000000	000000
1/2"-4	4	2	0.5"	±0.004" per ft.	0.4"	Rockwell C38	145,000	-65° to 300°	000000	000000
1/2"-4	6	2	0.5"	±0.004" per ft.	0.4"	Rockwell C38	145,000	-65° to 300°	000000	000000
3/4"-4	3	2	0.5"	±0.005" per ft.	0.63"	Rockwell C38	150,000	-65° to 300°	0000000	000000
3/4"-4	6	2	0.5"	±0.005" per ft.	0.63"	Rockwell C38	150,000	-65° to 300°	0000000	000000

Large-Diameter Swivel-Tip Thumb Screws

A wide tip provides more gripping power than standard swivel-tip thumb screws. To use, remove the tip, thread the screw through the hole, and attach the tip on the other side. The tip swivels in all directions for maximum contact with angled and uneven surfaces. A retaining spring holds the pad in place. They have a black-oxide finish that provides corrosion resistance in dry environments. Length is measured from under the collar. Optional extra-large steel tips offer more gripping strength. Optional plastic tips are soft, nonmarring, and made of acetal.

For technical drawings and 3-D models, click on a part number.

Thumb Screws
	Tip		Head		Collar					Optional Extra-Large Steel Tips				Optional Nonmarring Plastic Tips				Replacement Retaining Springs
Lg.	Dia.	Lg.	Ht.	Wd.	Dia.	Ht.	Max. Swivel Angle		Each	Lg.	Dia.		Each	Lg.	Dia.		Each		Each
Black-Oxide Steel
1/4"-20
1 1/4"	5/16"	3/16"	5/8"	1 1/8"	9/16"	5/16"	10°	000000000	000000	7/32"	5/8"	000000000	00000	3/16"	5/16"	000000000	00000	000000000	00000
2"	5/16"	3/16"	5/8"	1 1/8"	9/16"	5/16"	10°	000000000	00000	7/32"	5/8"	000000000	0000	3/16"	5/16"	000000000	0000	000000000	000
2 3/4"	5/16"	3/16"	5/8"	1 1/8"	9/16"	5/16"	10°	000000000	00000	7/32"	5/8"	000000000	0000	3/16"	5/16"	000000000	0000	000000000	000
3 1/2"	5/16"	3/16"	5/8"	1 1/8"	9/16"	5/16"	10°	000000000	00000	7/32"	5/8"	000000000	0000	3/16"	5/16"	000000000	0000	000000000	000
5/16"-18
1 5/16"	3/8"	7/32"	7/8"	1 1/2"	11/16"	5/8"	10°	000000000	00000	1/4"	3/4"	000000000	0000	7/32"	3/8"	000000000	0000	000000000	000
2 1/16"	3/8"	7/32"	7/8"	1 1/2"	11/16"	5/8"	10°	000000000	00000	1/4"	3/4"	000000000	0000	7/32"	3/8"	000000000	0000	000000000	000
2 13/16"	3/8"	7/32"	7/8"	1 1/2"	11/16"	5/8"	10°	000000000	00000	1/4"	3/4"	000000000	0000	7/32"	3/8"	000000000	0000	000000000	000
3 9/16"	3/8"	7/32"	7/8"	1 1/2"	11/16"	5/8"	10°	000000000	00000	1/4"	3/4"	000000000	0000	7/32"	3/8"	000000000	0000	000000000	000
3/8"-16
1 5/16"	7/16"	1/4"	1"	2"	13/16"	1/2"	10°	000000000	00000	9/32"	3/4"	000000000	0000	1/4"	7/16"	000000000	0000	000000000	000
2 1/16"	7/16"	1/4"	1"	2"	13/16"	1/2"	10°	000000000	00000	9/32"	3/4"	000000000	0000	1/4"	7/16"	000000000	0000	000000000	000
2 13/16"	7/16"	1/4"	1"	2"	13/16"	1/2"	10°	000000000	00000	9/32"	3/4"	000000000	0000	1/4"	7/16"	000000000	0000	000000000	000
3 9/16"	7/16"	1/4"	1"	2"	13/16"	1/2"	10°	000000000	00000	9/32"	3/4"	000000000	0000	1/4"	7/16"	000000000	0000	000000000	000
4 5/16"	7/16"	1/4"	1"	2"	13/16"	1/2"	10°	000000000	00000	9/32"	3/4"	000000000	0000	1/4"	7/16"	000000000	0000	000000000	000
1/2"-13
2 1/16"	9/16"	5/16"	1 1/8"	2 1/2"	1"	9/16"	10°	000000000	00000	3/8"	7/8"	000000000	0000	5/16"	9/16"	000000000	0000	000000000	000
2 13/16"	9/16"	5/16"	1 1/8"	2 1/2"	1"	9/16"	10°	000000000	00000	3/8"	7/8"	000000000	0000	5/16"	9/16"	000000000	0000	000000000	000
3 9/16"	9/16"	5/16"	1 1/8"	2 1/2"	1"	9/16"	10°	000000000	00000	3/8"	7/8"	000000000	0000	5/16"	9/16"	000000000	0000	000000000	000
4 5/16"	9/16"	5/16"	1 1/8"	2 1/2"	1"	9/16"	10°	000000000	00000	3/8"	7/8"	000000000	0000	5/16"	9/16"	000000000	0000	000000000	000
5 1/16"	9/16"	5/16"	1 1/8"	2 1/2"	1"	9/16"	10°	000000000	00000	3/8"	7/8"	000000000	0000	5/16"	9/16"	000000000	0000	000000000	000
5/8"-11
2 5/16"	11/16"	13/32"	1 1/4"	3"	1 1/4"	5/8"	10°	000000000	00000	7/16"	1"	000000000	0000	13/32"	11/16"	000000000	0000	000000000	000
3 1/16"	11/16"	13/32"	1 1/4"	3"	1 1/4"	5/8"	10°	000000000	00000	7/16"	1"	000000000	0000	13/32"	11/16"	000000000	0000	000000000	000
3 13/16"	11/16"	13/32"	1 1/4"	3"	1 1/4"	5/8"	10°	000000000	00000	7/16"	1"	000000000	0000	13/32"	11/16"	000000000	0000	000000000	000
4 9/16"	11/16"	13/32"	1 1/4"	3"	1 1/4"	5/8"	10°	000000000	00000	7/16"	1"	000000000	0000	13/32"	11/16"	000000000	0000	000000000	000
5 5/16"	11/16"	13/32"	1 1/4"	3"	1 1/4"	5/8"	10°	000000000	00000	7/16"	1"	000000000	0000	13/32"	11/16"	000000000	0000	000000000	000

Swivel-Tip Thumb Screws

The tip is narrow so it will fit through threaded holes. For maximum contact with angled and uneven surfaces, the tip swivels in all directions. A black-oxide finish provides corrosion resistance in dry environments. Length is measured from under the head.

For technical drawings and 3-D models, click on a part number.

	Tip		Head
Lg.	Dia.	Lg.	Dia.	Ht.	Max. Swivel Angle	Tensile Strength, psi	Hardness		Each
Black-Oxide Steel
1/4"-20
1 1/2"	3/16"	1/4"	1"	3/8"	7.5°	80,000	Rockwell B85	000000000	000000
2"	3/16"	1/4"	1"	3/8"	7.5°	80,000	Rockwell B85	000000000	00000
5/16"-18
1 1/2"	1/4"	1/4"	1 1/8"	7/16"	7.5°	80,000	Rockwell B85	000000000	00000
2"	1/4"	1/4"	1 1/8"	7/16"	7.5°	80,000	Rockwell B85	000000000	00000
2 1/2"	1/4"	1/4"	1 1/8"	7/16"	7.5°	80,000	Rockwell B85	000000000	00000
3/8"-16
1 1/2"	5/16"	3/8"	1 1/4"	1/2"	7.5°	80,000	Rockwell B85	000000000	00000
2"	5/16"	3/8"	1 1/4"	1/2"	7.5°	80,000	Rockwell B85	000000000	00000
2 1/2"	5/16"	3/8"	1 1/4"	1/2"	7.5°	80,000	Rockwell B85	000000000	00000
3"	5/16"	3/8"	1 1/4"	1/2"	7.5°	80,000	Rockwell B85	000000000	00000
1/2"-13
1 1/2"	3/8"	3/8"	1 1/4"	9/16"	7.5°	80,000	Rockwell B85	000000000	00000
2"	3/8"	3/8"	1 1/4"	9/16"	7.5°	80,000	Rockwell B85	000000000	00000
2 1/2"	3/8"	3/8"	1 1/4"	9/16"	7.5°	80,000	Rockwell B85	000000000	00000
3"	3/8"	3/8"	1 1/4"	9/16"	7.5°	80,000	Rockwell B85	000000000	00000

Ultra-Flexible Swivel-Tip Thumb Screws

A large swivel angle allows these thumb screws to make better contact with angled and uneven surfaces than nonremovable swivel-tip thumb screws. The removable tip is narrow to fit through threaded holes and left-hand threaded to resist loosening as you tighten the screw. A black-oxide finish provides corrosion resistance in dry environments. Length is measured from under the head.

For technical drawings and 3-D models, click on a part number.

	Tip		Head
Lg.	Dia.	Lg.	Dia.	Ht.	Max. Swivel Angle	Tensile Strength, psi		Each
Black-Oxide Steel
1/4"-20
1 1/2"	3/16"	1/4"	1"	5/16"	10°	70,000	000000000	000000
2"	3/16"	1/4"	1"	5/16"	10°	70,000	000000000	00000
5/16"-18
1 1/2"	1/4"	1/4"	1 1/8"	3/8"	10°	70,000	000000000	00000
2"	1/4"	1/4"	1 1/8"	3/8"	10°	70,000	000000000	00000
2 1/2"	1/4"	1/4"	1 1/8"	3/8"	10°	70,000	000000000	00000
3/8"-16
1 1/2"	5/16"	3/8"	1 1/4"	7/16"	10°	70,000	000000000	00000
2"	5/16"	3/8"	1 1/4"	7/16"	10°	70,000	000000000	00000
2 1/2"	5/16"	3/8"	1 1/4"	7/16"	10°	70,000	000000000	00000
3"	5/16"	3/8"	1 1/4"	7/16"	10°	70,000	000000000	00000