System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Component Component |
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 | Ball Nut |
 | Ball Screw |
 | Collar |
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Nut Type Nut Type |
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 | Externally Threaded |
| Flange |
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Thread Direction Thread Direction |
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| Right Hand | Left Hand |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Threading Threading |
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Dynamic Thrust Load Capacity Dynamic Thrust Load Capacity |
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External Thread Size External Thread Size |
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Finish Finish |
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Tensile Strength Tensile Strength |
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Maximum Temperature Maximum Temperature |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Selecting Compatible Lead Screws and Nuts
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Precision Acme Lead Screws and Nuts
Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won’t unexpectedly move when the lead screw is at rest. To ensure compatibility, please select components that have the same thread direction and size.
Cast iron nuts have good machinability and high strength. 932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance. PET plastic nuts are lightweight and corrosion resistant.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Combine externally threaded nuts with a flange to create a custom flange nut.
External Thread | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | |
673 Bronze | |||||||||||||
| 1"-4 | 1 1/2" | 1.5" | 1 | 1:1 | 0.25" | 1 3/8"-16 | 1/2" | Class 2C | Brinell 70 | Not Rated | __ | 000000000 | 000000 |
PET Plastic | |||||||||||||
| 1"-4 | 1 1/2" | 1.5" | 1 | 1:1 | 0.25" | 1 3/8"-16 | 1/2" | Class 2C | Not Rated | 2,500 | 15° to 175° | 000000000 | 00000 |
Combine externally threaded nuts with a flange to create a custom flange nut.
External Thread | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Each | |
673 Bronze | ||||||||||||
| 1"-4 | 1 1/2" | 1.5" | 1 | 1:1 | 0.25" | 1 3/8"-16 | 1/2" | Class 2C | Brinell 70 | Not Rated | 000000000 | 000000 |
Fast-Travel Precision Acme Lead Screws and Nuts
Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. The threads have a tight thread fit for accurate, repeatable starts and stops. Pair with a motor in automated motion and positioning applications. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.
360 brass nuts have excellent machinability and good corrosion resistance. PET plastic nuts are lightweight and corrosion resistant.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Combine externally threaded nuts with a flange to create a custom flange nut.
External Thread | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | |
360 Brass | |||||||||||||
| 1"-4 | 1 1/2" | 1.5" | 2 | 2:1 | 0.5" | 1 3/8"-16 | 1/2" | Class 2C | Brinell 70 | 5,000 | __ | 000000000 | 000000 |
PET Plastic | |||||||||||||
| 1"-4 | 1 1/2" | 1.5" | 2 | 2:1 | 0.5" | 1 3/8"-16 | 1/2" | Class 2C | Not Rated | 2,500 | 15° to 175° | 000000000 | 00000 |
Combine externally threaded nuts with a flange to create a custom flange nut.
External Thread | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Each | |
360 Brass | ||||||||||||
| 1"-4 | 1 1/2" | 1.5" | 2 | 2:1 | 0.5" | 1 3/8"-16 | 1/2" | Class 2C | Brinell 70 | 5,000 | 000000000 | 000000 |
Acme Lead Screws and Nuts
Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. To ensure compatibility, please select components that have the same thread direction and size.
932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Round nuts move objects along the length of a lead screw.
| Thread Size | Ht. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
932 Bearing Bronze | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1"-4 | 1 17/32" | 1 21/32" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | ASTM B505 | 000000000 | 000000 |
Ball 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.
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.
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.
| Thread Size | Lg. | Wd. | Ht. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Temperature 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 | 1,600 | 0.015" | -40° to 300° | 00000000 | 0000000 |
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.
Flange | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | Ht. | Dia. | Thick. | No. of Thread Starts | Travel Distance per Turn | Bolt Circle Dia. | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Temperature Range, °F | Each | ||
Black-Oxide Alloy Steel | |||||||||||||||
| D | 1"-4 | 2 11/32" | 1 1/2" | 1 1/2" | 3 1/4" | 5/8" | 1 | 0.25" | 2 3/4" | Rockwell C56 | 1,600 | 0.015" | -40° to 300° | 00000000 | 0000000 |
Flange | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | Ht. | Dia. | Dia. | Thick. | No. of Thread Starts | Travel Distance per Turn | Bolt Circle Dia. | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Temperature Range, °F | Each | ||
Black-Oxide Alloy Steel | ||||||||||||||||
| D | 1"-4 | 2 11/32" | 1 1/2" | 1 1/2" | 1" | 3 1/4" | 5/8" | 1 | 0.25" | 2 3/4" | Rockwell C56 | 1,600 | 0.015" | -40° to 300° | 00000000 | 0000000 |
Self-Stopping Ball Screws and Nuts
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.
Root diameter indicates the diameter the ball screw will be after machining away the threads.
| 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 | |
Black-Oxide Alloy Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1"-4 | 2 | 2 | 0.274" | 0.84" | Rockwell C56 | 95,000 | -65° to 300° | 2 | 0000000 | 0000000 |
| 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 |
| Thread Size | Lg. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Temperature 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° | 0000000 | 0000000 |
Flange | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | Dia. | Thick. | No. of Thread Starts | Travel Distance per Turn | Bolt Circle Dia. | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Temperature 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° | 0000000 | 0000000 |
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.
Black-oxide alloy steel ball 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.
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.
| Thread Size | Lg. | Wd. | Ht. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Temperature Range, °F | Each | ||
Black-Oxide Alloy Steel | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 1"-4 | 3 1/8" | __ | __ | 1 11/16" | 2 | 0.5" | 1 9/16"-18 | Rockwell C56 | 3,900 | 0.015" | -40° to 300° | 00000000 | 0000000 |
| B | 1"-4 | 3" | 1 1/2" | 1 1/2" | __ | 4 | 1" | 1 9/16"-18 | Rockwell C56 | 2,350 | 0.015" | -40° to 300° | 00000000 | 000000 |
Flange | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | Ht. | Dia. | Dia. | Thick. | No. of Thread Starts | Travel Distance per Turn | Bolt Circle Dia. | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Temperature Range, °F | Each | ||
Black-Oxide Alloy Steel | ||||||||||||||||
| C | 1"-4 | 3 1/8" | __ | __ | 1 11/16" | 3 1/4" | 5/8" | 2 | 0.5" | 2 3/4" | Rockwell C56 | 3,900 | 0.015" | -40° to 300° | 00000000 | 0000000 |
| D | 1"-4 | 3" | 1 1/2" | 1 1/2" | __ | 3 1/4" | 5/8" | 4 | 1" | 2 3/4" | Rockwell C56 | 2,350 | 0.015" | -40° to 300° | 00000000 | 000000 |
Clamping Acme Lead Screw Collars
Thread these one-piece collars onto an Acme lead screw to separate and position components, or use them as an end stop to limit travel. Tighten the clamping screw to secure.
To ensure compatibility, please select a collar that has the same thread type, direction, and size as your lead screw.
Black-oxide carbon steel collars have mild corrosion resistance. 303 stainless steel collars have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Two-Piece Clamping Acme Lead Screw Collars
Mount these two-piece collars anywhere on an Acme lead screw without removing components. Use them to separate and position components or as an end stop to limit travel. Tighten the clamping screw to secure.
To ensure compatibility, please select a collar that has the same thread type, direction, and size as your lead screw.
Black-oxide carbon steel collars have mild corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| Thread Size | OD | Wd. | No. of Thread Starts | Hardness | Each | |
Right-Hand Threaded | ||||||
|---|---|---|---|---|---|---|
Black-Oxide 1215 Carbon Steel | ||||||
| 1"-4 | 1 3/4" | 1/2" | 1 | Brinell 167 | 0000000 | 000000 |