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Selecting Compatible Lead Screws and Nuts
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Metric Ultra-Precision Lead Screws and Nuts
Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. 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 type and thread size.
Nuts are acetal plastic; they 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.
External Thread | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Hex Wd. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Size | Lg. | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | ||
Acetal Plastic | ||||||||||||||||
| A | M2 | 0.5 | 11/16" | 0.297" | 7/16" | 1 | Metric Rounded Acme | 1:1 | 0.5 | 3/8"-24 | 3/16" | 8,000 | 10 | -40° to 185° | 0000000 | 000000 |
| A | M4 | 0.3 | 11/16" | 0.297" | 7/16" | 1 | Metric Rounded Acme | 1:1 | 0.3 | 3/8"-24 | 3/16" | 8,000 | 25 | -40° to 185° | 0000000 | 00000 |
| A | M8 | 1.5 | 1" | 0.548" | 11/16" | 1 | Metric Rounded Acme | 1:1 | 1.5 | 5/8"-18 | 1/4" | 8,000 | 75 | -40° to 185° | 0000000 | 00000 |
Flange | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Mounting Hole Ctr.-to-Ctr. | Bolt Circle Dia. | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | ||
Acetal Plastic | |||||||||||||||||||
| B | M2 | 0.5 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 1 | Metric Rounded Acme | 1:1 | 0.5 | 39/64" | __ | 8,000 | 10 | -40° to 185° | 0000000 | 000000 |
| B | M4 | 0.3 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 1 | Metric Rounded Acme | 1:1 | 0.3 | 39/64" | __ | 8,000 | 25 | -40° to 185° | 0000000 | 00000 |
| C | M8 | 1.5 | 3/4" | 0.548" | 1 1/8" | __ | __ | 3/16" | 1 | Metric Rounded Acme | 1:1 | 1.5 | __ | 7/8" | 8,000 | 75 | -40° to 185° | 0000000 | 00000 |
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 Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. All components are corrosion resistant for use in harsh environments. To ensure compatibility, select components that have the same thread type, thread size, and number of thread starts.
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 with wear-compensating internal O-ring or wear-compensating spring maintain a tight fit even when their threads begin to wear.
Flange | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn | Mounting Hole Ctr.-to-Ctr. | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | |||||||||||||||
| A | 9/64"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 2 | Rounded Acme | 2:1 | 0.096" | 39/64" | Not Rated | 25 | 0000000 | 000000 |
| A | 5/32"-21.3 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 2 | Rounded Acme | 2:1 | 0.094" | 39/64" | Not Rated | 25 | 0000000 | 00000 |
| A | 3/16"-42.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 16 | Rounded Acme | 16:1 | 0.375" | 39/64" | Not Rated | 25 | 0000000 | 00000 |
| A | 7/32"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 4 | Rounded Acme | 4:1 | 0.192" | 39/64" | Not Rated | 25 | 0000000 | 00000 |
Acetal Plastic with Wear-Compensating Internal O-Ring | |||||||||||||||
| A | 9/64"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 2 | Rounded Acme | 2:1 | 0.096" | 39/64" | Not Rated | 5 | 0000000 | 00000 |
| A | 5/32"-21.3 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 2 | Rounded Acme | 2:1 | 0.094" | 39/64" | Not Rated | 5 | 0000000 | 00000 |
| A | 3/16"-42.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 16 | Rounded Acme | 16:1 | 0.375" | 39/64" | Not Rated | 5 | 0000000 | 00000 |
| A | 7/32"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 4 | Rounded Acme | 4:1 | 0.192" | 39/64" | Not Rated | 5 | 0000000 | 00000 |
Ultra-Precision Lead Screws and Nuts
Operating with less backlash (play) than Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. 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. All components are corrosion resistant for use in harsh environments. To ensure compatibility, select components that have the same thread type and thread size.
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 with wear-compensating internal O-ring or wear-compensating spring maintain a tight fit even when their threads begin to wear.
Flange | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn | Mounting Hole Ctr.-to-Ctr. | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | |||||||||||||||
| A | 9/64"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 1 | Rounded Acme | 1:1 | 0.048" | 39/64" | Not Rated | 25 | 0000000 | 000000 |
| A | 9/64"-41.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 1 | Rounded Acme | 1:1 | 0.024" | 39/64" | Not Rated | 25 | 0000000 | 00000 |
| A | 7/32"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 1 | Rounded Acme | 1:1 | 0.048" | 39/64" | Not Rated | 25 | 0000000 | 00000 |
Acetal Plastic with Wear-Compensating Internal O-Ring | |||||||||||||||
| A | 9/64"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 1 | Rounded Acme | 1:1 | 0.048" | 39/64" | Not Rated | 5 | 0000000 | 00000 |
| A | 9/64"-41.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 1 | Rounded Acme | 1:1 | 0.024" | 39/64" | Not Rated | 5 | 0000000 | 00000 |
| A | 7/32"-20.8 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | 1 | Rounded Acme | 1:1 | 0.048" | 39/64" | Not Rated | 5 | 0000000 | 00000 |