Selecting Compatible Lead Screws and Nuts
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Metric Precision 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, select components that have the same thread direction, size, pitch, and number of thread starts.
932 bearing bronze nuts have good machinability and wear resistance. Manganese bronze nuts have good strength and wear 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. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Thread Fit | Hardness | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Specifications Met | Each | |
932 Bearing Bronze | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M16 | 3 | 1 1/8" | 1.125" | 1 | 1:1 | 3 | 7H | Brinell 70 | Not Rated | 2,000 | DIN 103 | 0000000 | 000000 |
External Thread | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Size | Lg. | Thread Fit | Hardness | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Specifications Met | Each | |
Manganese Bronze | |||||||||||||||
| M16 | 3 | 1" | 1.125" | 1 | 1:1 | 3 | 15/16"-16 | 1/2" | 7H | Brinell 126 | 75,000 | 2,000 | DIN 103 | 0000000 | 000000 |
Flange | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Dia. | Thick. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Bolt Circle Dia. | Thread Fit | Hardness | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Specifications Met | Each | |
Manganese Bronze | ||||||||||||||||
| M16 | 3 | 1" | 1.125" | 2 39/64" | 17/32" | 1 | 1:1 | 3 | 2 3/32" | 7H | Brinell 126 | Not Rated | 2,000 | DIN 103 | 0000000 | 000000 |
Metric Fast-Travel Ultra-Precision Lead Screws and Nuts
Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. To ensure compatibility, select components that have the same thread size, thread pitch, and number of thread starts.
Acetal nuts have good wear and 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. | Dia. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Hardness | Tensile Strength, psi | Dynamic Thrust Load Cap. | Each | ||
Acetal Plastic | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | M16 | 5 | 1 17/64" | 1.417" | 7 | Metric Rounded Trapezoidal | 7:1 | 35 | Durometer 74D | 10,000 | Not Rated | 0000000 | 000000 |
Flange | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Dia. | Thick. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Bolt Circle Dia. | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | ||||||||||||||
| F | M16 | 5 | 1 3/8" | 1.102" | 1 57/64" | 15/32" | 7 | Metric Rounded Trapezoidal | 7:1 | 35 | 1 1/2" | Not Rated | 0000000 | 000000 |
Metric 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, pitch, and number of thread starts. Class 7e and 7H components are compatible.
932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair corrosion resistance. 360 brass components have excellent machinability and good 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.
Flange nuts move objects along the length of a lead screw. They have a wide machinable flange for custom mounting.
Flange | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Ht., mm | Dia., mm | Dia., mm | Thick., mm | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Thread Fit | Hardness | Each | |
932 Bearing Bronze | ||||||||||||
| M16 | 4 | 35 | 28 | 48 | 12 | 1 | 1:1 | 4 | 7H | Not Rated | 000000000 | 000000 |
Hex nuts fasten and position lead screw components.
| Thread Size | Thread Pitch, mm | Ht., mm | Wd., mm | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Thread Fit | Fastener Strength Grade/Class | Hardness | Each | |
Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| M16 | 4 | 16 | 27 | 1 | 1:1 | 4 | 7H | Grade 2 | Not Rated | 000000000 | 000000 |
Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.
| Thread Size | Thread Pitch, mm | Ht., mm | Wd., mm | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Thread Fit | Hardness | Each | |
360 Brass | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| M16 | 4 | 35 | 28 | 1 | 1:1 | 4 | 7H | Not Rated | 000000000 | 000000 |