System of Measurement System of Measurement |
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Length Length | Show |
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Length Length | Hide |
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Component Component |
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 | Ball Screw |
 | Lead Screw |
Thread Type Thread Type |
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Thread Direction Thread Direction |
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Material Material |
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Threading Threading |
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 | Fully Threaded |
Hardness Hardness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Maximum Temperature Maximum Temperature |
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Minimum Temperature Minimum Temperature |
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Thread Fabrication Thread Fabrication |
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Thread Fit Thread Fit |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Specifications Met Specifications Met |
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Speed Ratio Speed Ratio |
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Tensile Strength Tensile Strength |
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Finish Finish |
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Selecting Compatible Lead Screws and Nuts
More
Metric 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, these 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 and travel distance per turn. 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., mm | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Root Dia., mm | Hardness | Temperature Range, °F | Each | |
Carbon Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| M25 | 2,000 | 1 | 5 | ±0.210 mm per 300 mm | 22.2 | Rockwell C58 | Not Rated to 175° | 0000000 | 0000000 |
| M25 | 2,000 | 1 | 10 | ±0.210 mm per 300 mm | 20.2 | Rockwell C58 | Not Rated to 175° | 00000000 | 000000 |
| M28 | 2,000 | 1 | 6 | ±0.210 mm per 300 mm | 25.2 | Rockwell C58 | Not Rated to 175° | 00000000 | 000000 |
| M32 | 2,000 | 1 | 10 | ±0.210 mm per 300 mm | 27.2 | Rockwell C58 | Not Rated to 175° | 00000000 | 000000 |
M36 | 2,000 | 1 | 10 | ±0.210 mm per 300 mm | 30.5 | Rockwell C58 | Not Rated to 175° | 00000000 | 000000 |
Metric Fast-Travel Ball Screws and Nuts
With multiple thread starts, these metric ball screws create linear travel that’s approximately three times faster than ball screws with a single thread start. They’re ideal for applications with an actuator. The ball nuts have internal ball bearings to produce smooth, low-friction travel for applications that require high speed, accurate positioning, and repeatable movement. They come with a tube to keep the ball bearings in place. Do not remove the tube until you’re ready to install the nuts onto the screws. All of these ball nuts have an end cap on each end to stabilize fast-rotating motion. End caps also dampen the noise from the ball bearings and make the ball nuts more compact. Seals on the ball nuts keep out dust.
To ensure compatibility, select components that have the same thread size and travel distance per turn.
Root diameter indicates the diameter the ball screw will be after machining away the threads.
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.
| Thread Size | Lg., mm | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Root Dia., mm | Hardness | Temp. Range, °F | Each | |
Carbon Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| M20 | 2,000 | 4 | 20 | ±0.210 mm per 300 mm | 17.5 | Rockwell C58 | Not Rated to 175° | 00000000 | 0000000 |
| M25 | 2,000 | 4 | 25 | ±0.210 mm per 300 mm | 21.9 | Rockwell C58 | Not Rated to 175° | 00000000 | 000000 |
| M32 | 2,000 | 4 | 32 | ±0.210 mm per 300 mm | 28.3 | Rockwell C58 | Not Rated to 175° | 00000000 | 000000 |
| M36 | 2,000 | 2 | 20 | ±0.210 mm per 300 mm | 31.2 | Rockwell C58 | Not Rated to 175° | 00000000 | 000000 |
Metric 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, size, and pitch. Class 7E and 7H components are compatible.
Black-oxide carbon steel components have mild corrosion resistance.
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.
| Thread Size | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Thread Fit | Fastener Strength Grade/Class | Hardness | Specifications Met | Each | |
Black-Oxide Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| M12 | 3 | 2,000 | 1 | 1:1 | 3 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 000000 |
| M16 | 4 | 2,000 | 1 | 1:1 | 4 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 000000 |
| M20 | 4 | 2,000 | 1 | 1:1 | 4 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 000000 |
| M26 | 5 | 2,000 | 1 | 1:1 | 5 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 000000 |
| M40 | 7 | 2,000 | 1 | 1:1 | 7 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 000000 |