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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.
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.
Round Nuts—Right-Hand Threaded
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | |
PET Plastic | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-8 | 3/4" | 1.344" | 1 | 1:1 | 0.125" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 000000 |
| 3/8"-10 | 3/4" | 1.344" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 00000 |
| 3/8"-12 | 3/4" | 1.344" | 1 | 1:1 | 0.083" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 00000 |
| 3/8"-16 | 3/4" | 1.344" | 1 | 1:1 | 0.063" | Class 2C | Not Rated | 350 | 15° to 175° | 0000000 | 00000 |
| 1/2"-10 | 1" | 1.469" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 650 | 15° to 175° | 00000000 | 00000 |
| 5/8"-5 | 1 1/4" | 1.859" | 1 | 1:1 | 0.2" | Class 2C | Not Rated | 1,000 | 15° to 175° | 0000000 | 00000 |
| 5/8"-8 | 1 1/4" | 1.859" | 1 | 1:1 | 0.125" | Class 2C | Not Rated | 1,000 | 15° to 175° | 00000000 | 00000 |
| 5/8"-10 | 1 1/4" | 1.859" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 1,000 | 15° to 175° | 00000000 | 00000 |
| 3/4"-5 | 1 1/2" | 2.234" | 1 | 1:1 | 0.2" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 00000 |
| 3/4"-6 | 1 1/2" | 2.234" | 1 | 1:1 | 0.167" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 00000 |
| 3/4"-10 | 1 1/2" | 2.234" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 00000 |
Round Nuts—Left-Hand Threaded
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | |
PET Plastic | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-8 | 3/4" | 1.344" | 1 | 1:1 | 0.125" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 000000 |
| 3/8"-10 | 3/4" | 1.344" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 00000 |
| 3/8"-12 | 3/4" | 1.344" | 1 | 1:1 | 0.083" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 00000 |
| 1/2"-10 | 1" | 1.469" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 650 | 15° to 175° | 00000000 | 00000 |
| 5/8"-8 | 1 1/4" | 1.859" | 1 | 1:1 | 0.125" | Class 2C | Not Rated | 1,000 | 15° to 175° | 00000000 | 00000 |
| 5/8"-10 | 1 1/4" | 1.859" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 1,000 | 15° to 175° | 00000000 | 00000 |
| 3/4"-5 | 1 1/2" | 2.234" | 1 | 1:1 | 0.2" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 00000 |
| 3/4"-6 | 1 1/2" | 2.234" | 1 | 1:1 | 0.167" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 00000 |
| 3/4"-10 | 1 1/2" | 2.234" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 00000 |
Externally Threaded Nuts—Right-Hand Threaded
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 | |
PET Plastic | |||||||||||||
| 1/4"-16 | 5/8" | 0.688" | 1 | 1:1 | 0.063" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 160 | 15° to 175° | 000000000 | 000000 |
| 1/4"-20 | 5/8" | 0.688" | 1 | 1:1 | 0.05" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 160 | 15° to 175° | 000000000 | 00000 |
| 3/8"-8 | 5/8" | 0.688" | 1 | 1:1 | 0.125" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 350 | 15° to 175° | 000000000 | 00000 |
| 3/8"-10 | 5/8" | 0.688" | 1 | 1:1 | 0.1" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 350 | 15° to 175° | 000000000 | 00000 |
| 3/8"-12 | 5/8" | 0.688" | 1 | 1:1 | 0.083" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 350 | 15° to 175° | 000000000 | 00000 |
| 3/8"-16 | 5/8" | 0.688" | 1 | 1:1 | 0.063" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 350 | 15° to 175° | 000000000 | 00000 |
| 1/2"-10 | 3/4" | 1.125" | 1 | 1:1 | 0.1" | 15/16"-16 | 1/2" | Class 2C | Not Rated | 650 | 15° to 175° | 000000000 | 00000 |
| 5/8"-8 | 1" | 1.125" | 1 | 1:1 | 0.125" | 15/16"-16 | 1/2" | Class 2C | Not Rated | 1,000 | 15° to 175° | 000000000 | 00000 |
| 5/8"-10 | 1" | 1.125" | 1 | 1:1 | 0.1" | 15/16"-16 | 1/2" | Class 2C | Not Rated | 1,000 | 15° to 175° | 000000000 | 00000 |
| 3/4"-5 | 1 1/4" | 1.125" | 1 | 1:1 | 0.2" | 1"-18 | 1/2" | Class 2C | Not Rated | 1,450 | 15° to 175° | 000000000 | 00000 |
| 3/4"-6 | 1 1/4" | 1.125" | 1 | 1:1 | 0.167" | 1"-18 | 1/2" | Class 2C | Not Rated | 1,450 | 15° to 175° | 000000000 | 00000 |
| 3/4"-10 | 1 1/4" | 1.125" | 1 | 1:1 | 0.1" | 1"-18 | 1/2" | Class 2C | Not Rated | 1,450 | 15° to 175° | 000000000 | 00000 |
| 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 |
| 1"-5 | 1 1/2" | 1.5" | 1 | 1:1 | 0.2" | 1 3/8"-16 | 1/2" | Class 2C | Not Rated | 2,500 | 15° to 175° | 000000000 | 00000 |
| 1"-6 | 1 1/2" | 1.5" | 1 | 1:1 | 0.167" | 1 3/8"-16 | 1/2" | Class 2C | Not Rated | 2,500 | 15° to 175° | 000000000 | 00000 |
| 1"-10 | 1 1/2" | 1.5" | 1 | 1:1 | 0.1" | 1 3/8"-16 | 1/2" | Class 2C | Not Rated | 2,500 | 15° to 175° | 000000000 | 00000 |
| 1 1/4"-5 | 1 3/4" | 2.125" | 1 | 1:1 | 0.2" | 1 31/32"-18 | 13/16" | Class 2C | Not Rated | 3,900 | 15° to 175° | 000000000 | 00000 |
| 1 1/2"-4 | 2 19/64" | 2.125" | 1 | 1:1 | 0.25" | 1 31/32"-18 | 13/16" | Class 2C | Not Rated | 6,000 | 15° to 175° | 000000000 | 00000 |
| 2"-4 | 3 15/32" | 2.75" | 1 | 1:1 | 0.25" | 2 35/64"-18 | 7/8" | Class 2C | Not Rated | 10,000 | 15° to 175° | 000000000 | 00000 |
Flanges
Thread onto an externally threaded acme nut to create a custom flange nut.
| Flange Thread Size | Flange Dia. | Flange Thick. | Bolt Circle Dia. | Flange Hardness | Each | |
1117 Carbon Steel | ||||||
|---|---|---|---|---|---|---|
| 1 3/8"-16 | 2 49/64" | 33/64" | 2 17/64" | Brinell 156 | 000000000 | 000000 |
| 1 31/32"-18 | 4 13/64" | 53/64" | 3 7/16" | Brinell 156 | 000000000 | 00000 |
| 2 35/64"-18 | 4 15/16" | 29/32" | 4 1/16" | Brinell 156 | 000000000 | 00000 |
1215 Carbon Steel | ||||||
| 9/16"-18 | 1 39/64" | 13/32" | 1 1/8" | Not Rated | 000000000 | 00000 |
| 15/16"-16 | 2 5/8" | 17/32" | 2 3/32" | Not Rated | 000000000 | 00000 |
303 Stainless Steel | ||||||
| 9/16"-18 | 1 39/64" | 13/32" | 1 1/8" | Brinell 140 | 0000000 | 00000 |
| 15/16"-16 | 2 5/8" | 17/32" | 2 3/32" | Brinell 140 | 0000000 | 00000 |
| 1 3/8"-16 | 2 49/64" | 33/64" | 2 17/64" | Brinell 140 | 0000000 | 00000 |
| 1 31/32"-18 | 4 13/64" | 53/64" | 3 7/16" | Brinell 140 | 0000000 | 00000 |
| 2 35/64"-18 | 4 15/16" | 29/32" | 4 1/16" | Brinell 140 | 0000000 | 00000 |
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.
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.
Round Nuts—Right-Hand Threaded
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | |
PET Plastic | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4"-12 | 3/4" | 1.344" | 4 | 4:1 | 0.333" | Class 2C | Not Rated | 160 | 15° to 175° | 00000000 | 000000 |
| 3/8"-8 | 3/4" | 1.344" | 2 | 2:1 | 0.25" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 00000 |
| 3/8"-8 | 3/4" | 1.344" | 4 | 4:1 | 0.5" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 00000 |
| 3/8"-10 | 3/4" | 1.344" | 2 | 2:1 | 0.2" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 00000 |
| 1/2"-8 | 1" | 1.469" | 2 | 2:1 | 0.25" | Class 2C | Not Rated | 650 | 15° to 175° | 0000000 | 00000 |
| 1/2"-10 | 1" | 1.469" | 2 | 2:1 | 0.2" | Class 2C | Not Rated | 650 | 15° to 175° | 0000000 | 00000 |
| 1/2"-10 | 1" | 1.469" | 5 | 5:1 | 0.5" | Class 2C | Not Rated | 650 | 15° to 175° | 00000000 | 00000 |
Externally Threaded Nuts—Right-Hand Threaded
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 | |
PET Plastic | |||||||||||||
| 1/4"-12 | 5/8" | 0.688" | 4 | 4:1 | 0.333" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 160 | 15° to 175° | 000000000 | 000000 |
| 3/8"-5 | 5/8" | 0.688" | 5 | 5:1 | 1" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 250 | 15° to 175° | 000000000 | 00000 |
| 3/8"-8 | 5/8" | 0.688" | 2 | 2:1 | 0.25" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 350 | 15° to 175° | 000000000 | 00000 |
| 3/8"-8 | 5/8" | 0.688" | 4 | 4:1 | 0.5" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 350 | 15° to 175° | 000000000 | 00000 |
| 3/8"-10 | 5/8" | 0.688" | 2 | 2:1 | 0.2" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 350 | 15° to 175° | 000000000 | 00000 |
| 1/2"-8 | 3/4" | 1.125" | 2 | 2:1 | 0.25" | 15/16"-16 | 1/2" | Class 2C | Not Rated | 650 | 15° to 175° | 000000000 | 00000 |
| 1/2"-10 | 3/4" | 1.125" | 2 | 2:1 | 0.2" | 15/16"-16 | 1/2" | Class 2C | Not Rated | 650 | 15° to 175° | 000000000 | 00000 |
| 1/2"-10 | 3/4" | 1.125" | 5 | 5:1 | 0.5" | 15/16"-16 | 1/2" | Class 2C | Not Rated | 650 | 15° to 175° | 000000000 | 00000 |
| 3/4"-8 | 1 1/4" | 1.125" | 4 | 4:1 | 0.5" | 1"-18 | 1/2" | Class 2C | Not Rated | 1,450 | 15° to 175° | 000000000 | 00000 |
| 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 |
Flanges
Thread onto an externally threaded acme nut to create a custom flange nut.
| Flange Thread Size | Flange Dia. | Flange Thick. | Bolt Circle Dia. | Flange Hardness | Each | |
1117 Carbon Steel | ||||||
|---|---|---|---|---|---|---|
| 1 3/8"-16 | 2 49/64" | 33/64" | 2 17/64" | Brinell 156 | 000000000 | 000000 |
1215 Carbon Steel | ||||||
| 9/16"-18 | 1 39/64" | 13/32" | 1 1/8" | Not Rated | 000000000 | 00000 |
| 15/16"-16 | 2 5/8" | 17/32" | 2 3/32" | Not Rated | 000000000 | 00000 |
| 1"-18 | 2 5/8" | 17/32" | 2 3/32" | Not Rated | 000000000 | 00000 |
303 Stainless Steel | ||||||
| 9/16"-18 | 1 39/64" | 13/32" | 1 1/8" | Brinell 140 | 0000000 | 00000 |
| 15/16"-16 | 2 5/8" | 17/32" | 2 3/32" | Brinell 140 | 0000000 | 00000 |
| 1"-18 | 2 5/8" | 17/32" | 2 3/32" | Brinell 140 | 0000000 | 00000 |
| 1 3/8"-16 | 2 49/64" | 33/64" | 2 17/64" | Brinell 140 | 0000000 | 00000 |