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, thread size, and number of thread starts.
Carbon steel lead screws and flanges have good machinability. Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance and a dark surface color. 303 and 304 stainless steel lead screws and flanges have good corrosion resistance.
PET plastic nuts are lightweight and corrosion resistant. PEEK plastic nuts handle twice as much heat as PET and acetal plastic nuts. They have good chemical resistance and excellent corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
| 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" | 1.465" | 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 | 000000 |
| 3/4"-6 | 1 1/2" | 2.234" | 1 | 1:1 | 0.167" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 000000 |
| 3/4"-10 | 1 1/2" | 2.234" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 000000 |
PEEK Plastic | |||||||||||
| 1/2"-10 | 1" | 1.5" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 5,650 | -40° to 525° | 000000000 | 000000 |
| 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" | 1.465" | 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 | 000000 |
| 3/4"-6 | 1 1/2" | 2.234" | 1 | 1:1 | 0.167" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 000000 |
| 3/4"-10 | 1 1/2" | 2.234" | 1 | 1:1 | 0.1" | Class 2C | Not Rated | 1,450 | 15° to 175° | 00000000 | 000000 |
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 | |
Acetal Plastic | |||||||||||||
| 3/4"-8 | 1 1/4" | 1.125" | 1 | 1:1 | 0.125" | 1"-18 | 1/2" | Class 2C | Rockwell R120 | 1,400 | -40° to 190° | 000000000 | 000000 |
| 3/4"-16 | 1 1/4" | 1.125" | 1 | 1:1 | 0.063" | 1"-18 | 1/2" | Class 2C | Rockwell R120 | 1,400 | -40° to 190° | 000000000 | 00000 |
| 1"-8 | 1 1/2" | 1.5" | 1 | 1:1 | 0.125" | 1 3/8"-16 | 1/2" | Class 2C | Rockwell R120 | 2,500 | -40° to 190° | 000000000 | 00000 |
| 1 1/2"-10 | 2 19/64" | 2.125" | 1 | 1:1 | 0.1" | 1 31/32"-18 | 13/16" | Class 2C | Rockwell R120 | 5,600 | -40° to 190° | 000000000 | 000000 |
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 | 00000 |
| 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 | 000000 |
| 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 | 000000 |
PEEK Plastic | |||||||||||||
| 1/4"-20 | 5/8" | 0.688" | 1 | 1:1 | 0.05" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 150 | -40° to 525° | 000000000 | 000000 |
| 1/2"-10 | 3/4" | 1.125" | 1 | 1:1 | 0.1" | 15/16"-16 | 1/2" | Class 2C | Not Rated | 620 | -40° to 525° | 000000000 | 000000 |
| 3/4"-5 | 1 1/4" | 1.125" | 1 | 1:1 | 0.2" | 1"-18 | 1/2" | Class 2C | Not Rated | 1,400 | -40° to 525° | 000000000 | 000000 |
| 3/4"-6 | 1 1/4" | 1.125" | 1 | 1:1 | 0.166" | 1"-18 | 1/2" | Class 2C | Not Rated | 1,400 | -40° to 525° | 000000000 | 000000 |
| 3/4"-10 | 1 1/4" | 1.125" | 1 | 1:1 | 0.1" | 1"-18 | 1/2" | Class 2C | Not Rated | 1,400 | -40° to 525° | 000000000 | 000000 |
| 1"-4 | 1 1/2" | 1.5" | 1 | 1:1 | 0.25" | 1 3/8"-16 | 1/2" | Class 2C | Not Rated | 2,500 | -40° to 525° | 000000000 | 000000 |
| 1"-5 | 1 1/2" | 1.5" | 1 | 1:1 | 0.2" | 1 3/8"-16 | 1/2" | Class 2C | Not Rated | 2,500 | -40° to 525° | 000000000 | 000000 |
| 1"-10 | 1 1/2" | 1.5" | 1 | 1:1 | 0.1" | 1 3/8"-16 | 1/2" | Class 2C | Not Rated | 2,500 | -40° to 525° | 000000000 | 000000 |
| 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 | -40° to 525° | 000000000 | 000000 |
Thread onto an externally threaded acme nut to create a custom flange nut.
Carbon steel flanges have good machinability. However, they will rust when exposed to moisture. Black-oxide carbon steel flanges have mild corrosion resistance in dry environments and a dark surface color. 303 stainless steel flanges have good corrosion resistance.
| 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 |
Black-Oxide 1117 Carbon Steel | ||||||
| 9/16"-18 | 1 39/64" | 13/32" | 1 1/8" | Brinell 135 | 00000000 | 00000 |
| 15/16"-16 | 2 39/64" | 17/32" | 2 3/32" | Brinell 135 | 00000000 | 00000 |
| 1 3/8"-16 | 2 49/64" | 33/64" | 2 17/64" | Brinell 135 | 00000000 | 00000 |
| 1 31/32"-18 | 4 13/64" | 53/64" | 3 7/16" | Brinell 135 | 00000000 | 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 |
| 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 |
| 1 31/32"-18 | 4 13/64" | 53/64" | 3 7/16" | Brinell 140 | 0000000 | 000000 |
| 2 35/64"-18 | 4 15/16" | 29/32" | 4 1/16" | Brinell 140 | 0000000 | 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.
Carbon steel lead screws and flanges have good machinability. 303 and 304 stainless steel lead screws and flanges have 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.
| 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 |
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 |
Thread onto an externally threaded acme nut to create a custom flange nut.
Carbon steel flanges have good machinability. However, they will rust when exposed to moisture. Black-oxide carbon steel flanges have mild corrosion resistance in dry environments and a dark surface color. 303 stainless steel flanges have good corrosion resistance.
| 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 | ||||||
| 1"-18 | 2 5/8" | 17/32" | 2 3/32" | Not Rated | 000000000 | 00000 |
| 15/16"-16 | 2 5/8" | 17/32" | 2 3/32" | Not Rated | 000000000 | 00000 |
| 9/16"-18 | 1 39/64" | 13/32" | 1 1/8" | Not Rated | 000000000 | 00000 |
303 Stainless Steel | ||||||
| 1 3/8"-16 | 2 49/64" | 33/64" | 2 17/64" | Brinell 140 | 0000000 | 00000 |
| 1"-18 | 2 5/8" | 17/32" | 2 3/32" | Brinell 140 | 0000000 | 00000 |
| 15/16"-16 | 2 5/8" | 17/32" | 2 3/32" | Brinell 140 | 0000000 | 00000 |
| 9/16"-18 | 1 39/64" | 13/32" | 1 1/8" | Brinell 140 | 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, 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.
Flange nuts with wear-compensating internal O-ring or wear-compensating spring maintain a tight fit even when their threads begin to wear. They resist backlash to maintain accuracy over time, which is important in positioning applications such as 3D printing and robotics.
Flange | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn | Mounting Hole Ctr.-to-Ctr. | Bolt Circle Dia. | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | |||||||||||||||||
| A | 1/8"-20.8 | 1/2" | 0.4" | __ | 3/4" | 13/32" | 1/8" | 1 | Rounded Acme | 1:1 | 0.048" | 39/64" | __ | 9,000 | 25 | 00000000 | 000000 |
| A | 1/8"-41.7 | 1/2" | 0.4" | __ | 3/4" | 13/32" | 1/8" | 1 | Rounded Acme | 1:1 | 0.024" | 39/64" | __ | 9,000 | 25 | 00000000 | 00000 |
| 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 | 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 | 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 |
| B | 1/4"-20 | 1" | 0.5" | 1" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.05" | __ | 3/4" | 9,700 | 50 | 00000000 | 00000 |
| B | 1/4"-40 | 1" | 0.5" | 1" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.025" | __ | 3/4" | 9,000 | 50 | 00000000 | 00000 |
| B | 3/8"-10 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.1" | __ | 7/8" | 9,700 | 75 | 0000000 | 00000 |
| B | 3/8"-20 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.05" | __ | 7/8" | 9,700 | 75 | 00000000 | 00000 |
| B | 3/8"-40 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.025" | __ | 7/8" | 9,700 | 75 | 00000000 | 00000 |
| B | 1/2"-8 | 1 1/2" | 0.75" | 1 1/2" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.125" | __ | 1 1/8" | 9,700 | 150 | 00000000 | 00000 |
| B | 1/2"-10 | 1 1/2" | 0.75" | 1 1/2" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.1" | __ | 1 1/8" | 9,700 | 150 | 0000000 | 00000 |
| B | 1/2"-20 | 1 1/2" | 0.75" | 1 1/2" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.05" | __ | 1 1/8" | 9,700 | 150 | 00000000 | 00000 |
| B | 5/8"-10 | 1 1/2" | 0.875" | 1 1/2" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.1" | __ | 1 3/16" | 9,700 | 220 | 00000000 | 00000 |
| B | 3/4"-10 | 2" | 1.125" | 1 51/64" | __ | __ | 1/4" | 1 | Rounded Acme | 1:1 | 0.1" | __ | 1 7/16" | 9,700 | 350 | 00000000 | 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 |
Acetal Plastic with Wear-Compensating Spring | |||||||||||||||||
| B | 3/4"-10 | 2 45/64" | 1.563" | 2 13/32" | __ | __ | 5/16" | 1 | Rounded Acme | 1:1 | 0.1" | __ | 2" | 9,700 | 150 | 00000000 | 000000 |
| C | 1/4"-20 | 1" | 0.5" | 1" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.05" | __ | 3/4" | 9,700 | 5 | 00000000 | 00000 |
| C | 3/8"-10 | 1 29/32" | 0.703" | 1 1/2" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.1" | __ | 1 1/8" | 9,700 | 10 | 0000000 | 00000 |
| C | 3/8"-20 | 1 29/32" | 0.703" | 1 1/2" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.05" | __ | 1 1/8" | 9,700 | 10 | 00000000 | 00000 |
| C | 3/8"-40 | 1 29/32" | 0.703" | 1 1/2" | __ | __ | 3/16" | 1 | Rounded Acme | 1:1 | 0.025" | __ | 1 1/8" | 9,700 | 10 | 00000000 | 00000 |
| C | 1/2"-8 | 2" | 0.891" | 1 39/64" | __ | __ | 17/64" | 1 | Rounded Acme | 1:1 | 0.125" | __ | 1 1/4" | 9,700 | 25 | 00000000 | 00000 |
| C | 1/2"-10 | 2" | 0.891" | 1 39/64" | __ | __ | 17/64" | 1 | Rounded Acme | 1:1 | 0.1" | __ | 1 1/4" | 9,700 | 25 | 0000000 | 00000 |
| C | 1/2"-20 | 2" | 0.891" | 1 39/64" | __ | __ | 17/64" | 1 | Rounded Acme | 1:1 | 0.05" | __ | 1 1/4" | 9,700 | 25 | 00000000 | 00000 |
| C | 5/8"-10 | 2" | 1.063" | 1 51/64" | __ | __ | 17/64" | 1 | Rounded Acme | 1:1 | 0.1" | __ | 1 3/8" | 9,700 | 35 | 00000000 | 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.
Flange nuts with wear-compensating internal O-ring or wear-compensating spring maintain a tight fit even when their threads begin to wear. They resist backlash to maintain accuracy over time, which is important in applications such as 3D printing and robotics.
Flange | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn | Mounting Hole Ctr.-to-Ctr. | Bolt Circle Dia. | 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 |
| B | 1/4"-8 | 1" | 0.5" | 1" | __ | __ | 3/16" | 8 | Rounded Acme | 8:1 | 1" | __ | 3/4" | 9,700 | 50 | 0000000 | 00000 |
| B | 1/4"-16 | 1" | 0.5" | 1" | __ | __ | 3/16" | 4 | Rounded Acme | 4:1 | 0.25" | __ | 3/4" | 9,700 | 50 | 0000000 | 00000 |
| B | 1/4"-20 | 1" | 0.5" | 1" | __ | __ | 3/16" | 2 | Rounded Acme | 2:1 | 0.1" | __ | 3/4" | 9,700 | 50 | 00000000 | 00000 |
| B | 3/8"-5 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 5 | Rounded Acme | 5:1 | 1" | __ | 7/8" | 9,700 | 75 | 0000000 | 00000 |
| B | 3/8"-8 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 4 | Rounded Acme | 4:1 | 0.5" | __ | 7/8" | 9,700 | 75 | 0000000 | 00000 |
| B | 3/8"-10 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 2 | Rounded Acme | 2:1 | 0.2" | __ | 7/8" | 9,700 | 75 | 0000000 | 00000 |
| B | 3/8"-12 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 3 | Rounded Acme | 3:1 | 0.25" | __ | 7/8" | 9,700 | 75 | 00000000 | 00000 |
| B | 1/2"-8 | 1 1/2" | 0.75" | 1 1/2" | __ | __ | 3/16" | 2 | Rounded Acme | 2:1 | 0.25" | __ | 1 1/8" | 9,700 | 150 | 00000000 | 00000 |
| B | 1/2"-8 | 1 1/2" | 0.75" | 1 1/2" | __ | __ | 3/16" | 4 | Rounded Acme | 4:1 | 0.5" | __ | 1 1/8" | 9,700 | 150 | 0000000 | 00000 |
| B | 1/2"-8 | 1 1/2" | 0.75" | 1 1/2" | __ | __ | 3/16" | 8 | Rounded Acme | 8:1 | 1" | __ | 1 1/8" | 9,700 | 150 | 0000000 | 00000 |
| B | 1/2"-10 | 1 1/2" | 0.75" | 1 1/2" | __ | __ | 3/16" | 2 | Rounded Acme | 2:1 | 0.2" | __ | 1 1/8" | 9,700 | 150 | 0000000 | 00000 |
| B | 5/8"-6 | 1 1/2" | 0.875" | 1 1/2" | __ | __ | 3/16" | 12 | Rounded Acme | 12:1 | 2" | __ | 1 3/16" | 9,700 | 220 | 00000000 | 00000 |
| B | 5/8"-8 | 1 1/2" | 0.875" | 1 1/2" | __ | __ | 3/16" | 4 | Rounded Acme | 4:1 | 0.5" | __ | 1 3/16" | 9,700 | 220 | 00000000 | 00000 |
| B | 3/4"-8 | 2" | 1.125" | 1 3/4" | __ | __ | 1/4" | 8 | Rounded Acme | 8:1 | 1" | __ | 1 7/16" | 9,000 | 350 | 00000000 | 00000 |
| B | 3/4"-8 | 2" | 1.125" | 1 51/64" | __ | __ | 1/4" | 2 | Rounded Acme | 2:1 | 0.25" | __ | 1 7/16" | 9,700 | 350 | 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 |
Acetal Plastic with Wear-Compensating Spring | |||||||||||||||||
| B | 3/4"-8 | 2 45/64" | 1.563" | 2 13/32" | __ | __ | 5/16" | 2 | Rounded Acme | 2:1 | 0.25" | __ | 2" | 9,700 | 150 | 0000000 | 000000 |
| C | 1/4"-8 | 1" | 0.5" | 1" | __ | __ | 3/16" | 8 | Rounded Acme | 8:1 | 1" | __ | 3/4" | 9,700 | 5 | 0000000 | 00000 |
| C | 1/4"-16 | 1" | 0.5" | 1" | __ | __ | 3/16" | 4 | Rounded Acme | 4:1 | 0.25" | __ | 3/4" | 9,700 | 5 | 0000000 | 00000 |
| C | 1/4"-20 | 1" | 0.5" | 1" | __ | __ | 3/16" | 2 | Rounded Acme | 2:1 | 0.1" | __ | 3/4" | 9,700 | 5 | 00000000 | 00000 |
| C | 3/8"-5 | 1 29/32" | 0.703" | 1 1/2" | __ | __ | 3/16" | 5 | Rounded Acme | 5:1 | 1" | __ | 1 1/8" | 9,700 | 10 | 0000000 | 00000 |
| C | 3/8"-8 | 1 29/32" | 0.703" | 1 1/2" | __ | __ | 3/16" | 4 | Rounded Acme | 4:1 | 0.5" | __ | 1 1/8" | 9,700 | 10 | 0000000 | 00000 |
| C | 3/8"-10 | 1 29/32" | 0.703" | 1 1/2" | __ | __ | 3/16" | 2 | Rounded Acme | 2:1 | 0.2" | __ | 1 1/8" | 9,700 | 10 | 0000000 | 00000 |
| C | 3/8"-12 | 1 29/32" | 0.703" | 1 1/2" | __ | __ | 3/16" | 3 | Rounded Acme | 3:1 | 0.25" | __ | 1 1/8" | 9,700 | 10 | 00000000 | 00000 |
| C | 1/2"-8 | 2" | 0.891" | 1 39/64" | __ | __ | 17/64" | 2 | Rounded Acme | 2:1 | 0.25" | __ | 1 1/4" | 9,700 | 25 | 00000000 | 00000 |
| C | 1/2"-8 | 2" | 0.891" | 1 39/64" | __ | __ | 17/64" | 4 | Rounded Acme | 4:1 | 0.5" | __ | 1 1/4" | 9,700 | 25 | 0000000 | 00000 |
| C | 1/2"-8 | 2" | 0.891" | 1 39/64" | __ | __ | 17/64" | 8 | Rounded Acme | 8:1 | 1" | __ | 1 1/4" | 9,700 | 25 | 0000000 | 00000 |
| C | 1/2"-10 | 2" | 0.891" | 1 39/64" | __ | __ | 17/64" | 2 | Rounded Acme | 2:1 | 0.2" | __ | 1 1/4" | 9,700 | 25 | 0000000 | 00000 |
| C | 5/8"-6 | 2" | 1.063" | 1 51/64" | __ | __ | 17/64" | 12 | Rounded Acme | 12:1 | 2" | __ | 1 3/8" | 9,700 | 35 | 00000000 | 00000 |
| C | 5/8"-8 | 2" | 1.063" | 1 51/64" | __ | __ | 17/64" | 4 | Rounded Acme | 4:1 | 0.5" | __ | 1 3/8" | 9,700 | 35 | 00000000 | 00000 |
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.
Flange nuts with a wear-compensating internal O-ring resist backlash to keep the nuts in place and maintain a tight fit even when their threads begin to wear. They’re often used in 3D printing and robotic applications.
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.
| 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 | M8 | 2.5 | 15/32" | 0.709" | 4 | Metric Rounded Trapezoidal | 4:1 | 10 | Durometer 74D | 10,000 | Not Rated | 0000000 | 000000 |
| A | M10 | 3 | 25/32" | 0.866" | 4 | Metric Rounded Trapezoidal | 4:1 | 12 | Durometer 74D | 10,000 | Not Rated | 0000000 | 00000 |
| A | M12 | 2.5 | 15/16" | 1.024" | 2 | Metric Rounded Trapezoidal | 2:1 | 5 | Durometer 74D | 10,000 | Not Rated | 0000000 | 00000 |
| A | M16 | 5 | 1 17/64" | 1.417" | 7 | Metric Rounded Trapezoidal | 7:1 | 35 | Durometer 74D | 10,000 | Not Rated | 0000000 | 00000 |
| A | M20 | 5 | 1 37/64" | 1.772" | 4 | Metric Rounded Trapezoidal | 4:1 | 20 | Durometer 74D | 10,000 | Not Rated | 0000000 | 00000 |
| A | M20 | 7.5 | 1 37/64" | 1.772" | 8 | Metric Rounded Trapezoidal | 8:1 | 60 | Durometer 74D | 10,000 | Not Rated | 0000000 | 00000 |
External Thread | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Wd. | Ht. | Dia. | Hex Wd. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Size | Lg. | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | ||||||||||||||||
| B | M2 | 0.5 | 11/16" | __ | __ | 0.297" | 7/16" | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | 3/8"-24 | 3/16" | 10 | 000000000 | 000000 |
| B | M4 | 1.25 | 11/16" | __ | __ | 0.297" | 7/16" | 8 | Metric Rounded Trapezoidal | 8:1 | 10 | 3/8"-24 | 3/16" | 25 | 000000000 | 00000 |
| B | M5 | 1.25 | 11/16" | __ | __ | 0.297" | 7/16" | 4 | Metric Rounded Trapezoidal | 4:1 | 5 | 3/8"-24 | 3/16" | 25 | 000000000 | 00000 |
| B | M8 | 2 | 1" | __ | __ | 0.548" | 11/16" | 2 | Metric Rounded Trapezoidal | 2:1 | 4 | 5/8"-18 | 1/4" | 75 | 000000000 | 00000 |
PEEK Plastic | ||||||||||||||||
| C | M2 | 0.4 | 5/16" | 0.22" | 0.197" | __ | __ | 2 | Metric Rounded Trapezoidal | 2:1 | 0.75 | M5 | 9/64" | 2 | 00000000 | 00000 |
| C | M2 | 0.4 | 5/16" | 0.22" | 0.197" | __ | __ | 4 | Metric Rounded Trapezoidal | 4:1 | 1.5 | M5 | 9/64" | 2 | 00000000 | 00000 |
| C | M2 | 0.4 | 5/16" | 0.22" | 0.197" | __ | __ | 8 | Metric Rounded Trapezoidal | 8:1 | 3 | M5 | 9/64" | 2 | 00000000 | 00000 |
| C | M3 | 0.5 | 13/32" | 0.311" | 0.276" | __ | __ | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | M7 | 5/32" | 4 | 00000000 | 00000 |
| C | M3 | 0.5 | 13/32" | 0.311" | 0.276" | __ | __ | 6 | Metric Rounded Trapezoidal | 6:1 | 3 | M7 | 5/32" | 4 | 00000000 | 00000 |
| C | M4 | 1 | 1/2" | 0.402" | 0.354" | __ | __ | 4 | Metric Rounded Trapezoidal | 4:1 | 4 | M9 | 13/64" | 4 | 00000000 | 00000 |
| C | M4 | 1 | 1/2" | 0.402" | 0.354" | __ | __ | 8 | Metric Rounded Trapezoidal | 8:1 | 8 | M9 | 13/64" | 10 | 00000000 | 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 | Bolt Circle Dia. | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | ||||||||||||||||
| D | M2 | 0.5 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | 39/64" | 10 | 000000000 | 000000 |
| D | M4 | 1.25 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 8 | Metric Rounded Trapezoidal | 8:1 | 10 | 39/64" | 25 | 000000000 | 00000 |
| D | M5 | 1.25 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 4 | Metric Rounded Trapezoidal | 4:1 | 5 | 39/64" | 25 | 000000000 | 00000 |
| E | M8 | 2 | 3/4" | 0.548" | 1 1/8" | __ | __ | 3/16" | 2 | Metric Rounded Trapezoidal | 2:1 | 4 | 7/8" | 75 | 000000000 | 00000 |
| F | M8 | 2.5 | 25/32" | 0.787" | 1 27/64" | __ | __ | 5/16" | 4 | Metric Rounded Trapezoidal | 4:1 | 10 | 1 7/64" | Not Rated | 0000000 | 00000 |
| F | M10 | 3 | 63/64" | 0.984" | 1 21/32" | __ | __ | 25/64" | 4 | Metric Rounded Trapezoidal | 4:1 | 12 | 1 11/32" | Not Rated | 0000000 | 00000 |
| F | M12 | 2.5 | 1 3/8" | 1.102" | 1 57/64" | __ | __ | 15/32" | 2 | Metric Rounded Trapezoidal | 2:1 | 5 | 1 1/2" | Not Rated | 0000000 | 00000 |
| 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 | 00000 |
| F | M20 | 5 | 1 47/64" | 1.26" | 2 11/64" | __ | __ | 15/32" | 4 | Metric Rounded Trapezoidal | 4:1 | 20 | 1 49/64" | Not Rated | 0000000 | 000000 |
| F | M20 | 7.5 | 1 47/64" | 1.26" | 2 11/64" | __ | __ | 15/32" | 8 | Metric Rounded Trapezoidal | 8:1 | 60 | 1 49/64" | Not Rated | 0000000 | 000000 |
PEEK Plastic | ||||||||||||||||
| D | M2 | 0.4 | 9/32" | 0.209" | __ | 15/32" | 15/64" | 5/64" | 2 | Metric Rounded Trapezoidal | 2:1 | 0.75 | 11/32" | 2 | 00000000 | 00000 |
| D | M2 | 0.4 | 9/32" | 0.209" | __ | 15/32" | 15/64" | 5/64" | 4 | Metric Rounded Trapezoidal | 4:1 | 1.5 | 11/32" | 2 | 00000000 | 00000 |
| D | M2 | 0.4 | 9/32" | 0.209" | __ | 15/32" | 15/64" | 5/64" | 8 | Metric Rounded Trapezoidal | 8:1 | 3 | 11/32" | 2 | 00000000 | 00000 |
| D | M3 | 0.5 | 21/64" | 0.295" | __ | 39/64" | 5/16" | 3/32" | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | 15/32" | 4 | 00000000 | 00000 |
| D | M3 | 0.5 | 21/64" | 0.295" | __ | 39/64" | 5/16" | 3/32" | 6 | Metric Rounded Trapezoidal | 6:1 | 3 | 15/32" | 4 | 00000000 | 00000 |
| D | M3 | 0.5 | 21/64" | 0.295" | __ | 39/64" | 5/16" | 3/32" | 12 | Metric Rounded Trapezoidal | 12:1 | 6 | 15/32" | 4 | 00000000 | 00000 |
| D | M4 | 1 | 13/32" | 0.354" | __ | 3/4" | 13/32" | 1/8" | 4 | Metric Rounded Trapezoidal | 4:1 | 4 | 19/32" | 10 | 00000000 | 00000 |
| D | M4 | 1 | 13/32" | 0.354" | __ | 3/4" | 13/32" | 1/8" | 8 | Metric Rounded Trapezoidal | 8:1 | 8 | 19/32" | 10 | 00000000 | 00000 |
PEEK Plastic with Wear-Compensating Internal O-Ring | ||||||||||||||||
| D | M2 | 0.4 | 5/16" | 0.228" | __ | 15/32" | 15/64" | 5/64" | 2 | Metric Rounded Trapezoidal | 2:1 | 0.75 | 11/32" | 1 | 00000000 | 00000 |
| D | M2 | 0.4 | 5/16" | 0.228" | __ | 15/32" | 15/64" | 5/64" | 4 | Metric Rounded Trapezoidal | 4:1 | 1.5 | 11/32" | 1 | 00000000 | 00000 |
| D | M2 | 0.4 | 5/16" | 0.228" | __ | 15/32" | 15/64" | 5/64" | 8 | Metric Rounded Trapezoidal | 8:1 | 3 | 11/32" | 1 | 00000000 | 00000 |
| D | M3 | 0.5 | 25/64" | 0.315" | __ | 39/64" | 5/16" | 3/32" | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | 15/32" | 2 | 00000000 | 00000 |
| D | M3 | 0.5 | 25/64" | 0.315" | __ | 39/64" | 5/16" | 3/32" | 6 | Metric Rounded Trapezoidal | 6:1 | 3 | 15/32" | 2 | 00000000 | 00000 |
| D | M3 | 0.5 | 25/64" | 0.315" | __ | 39/64" | 5/16" | 3/32" | 12 | Metric Rounded Trapezoidal | 12:1 | 6 | 15/32" | 2 | 00000000 | 00000 |
| D | M4 | 1 | 31/64" | 0.406" | __ | 3/4" | 13/32" | 1/8" | 4 | Metric Rounded Trapezoidal | 4:1 | 4 | 19/32" | 4 | 00000000 | 00000 |
| D | M4 | 1 | 31/64" | 0.406" | __ | 3/4" | 13/32" | 1/8" | 8 | Metric Rounded Trapezoidal | 8:1 | 8 | 19/32" | 4 | 00000000 | 00000 |
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 size, thread type, thread size, thread pitch, and number of thread starts.
Flange nuts with wear-compensating internal O-ring maintain a tight fit even when their threads begin to wear. They resist backlash to maintain accuracy over time, which is important in positioning applications such as 3D printing and robotics.
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.
External Thread | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Wd. | Ht. | Dia. | Hex Wd. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Size | Pitch | Lg. | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | |||||||||||||||||
| A | M2 | 0.5 | 11/16" | __ | __ | 0.297" | 7/16" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | 3/8"-24 | __ | 3/16" | 10 | 0000000 | 000000 |
| A | M4 | 0.3 | 11/16" | __ | __ | 0.297" | 7/16" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.3 | 3/8"-24 | __ | 3/16" | 25 | 0000000 | 00000 |
| A | M8 | 1.5 | 1" | __ | __ | 0.548" | 11/16" | 1 | Metric Rounded Trapezoidal | 1:1 | 1.5 | 5/8"-18 | __ | 1/4" | 75 | 0000000 | 00000 |
PEEK Plastic | |||||||||||||||||
| B | M2 | 0.4 | 5/16" | 0.22" | 0.197" | __ | __ | 1 | Metric Rounded Trapezoidal | 1:1 | 0.375 | M5 | 0.8mm | 9/64" | 2 | 000000000 | 00000 |
| B | M3 | 0.5 | 13/32" | 0.311" | 0.276" | __ | __ | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | M7 | 0.75mm | 5/32" | 5 | 000000000 | 00000 |
| B | M4 | 1 | 1/2" | 0.402" | 0.354" | __ | __ | 1 | Metric Rounded Trapezoidal | 1:1 | 1 | M9 | 1mm | 13/64" | 10 | 000000000 | 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 | Bolt Circle Dia. | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | ||||||||||||||||
| C | M2 | 0.5 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | 39/64" | 10 | 0000000 | 000000 |
| C | M4 | 0.3 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.3 | 39/64" | 25 | 0000000 | 00000 |
| D | M8 | 1.5 | 3/4" | 0.548" | 1 1/8" | __ | __ | 3/16" | 1 | Metric Rounded Trapezoidal | 1:1 | 1.5 | 7/8" | 75 | 0000000 | 00000 |
PEEK Plastic | ||||||||||||||||
| C | M2 | 0.4 | 9/32" | 0.209" | __ | 15/32" | 15/64" | 5/64" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.375 | 11/32" | 2 | 000000000 | 00000 |
| C | M3 | 0.5 | 21/64" | 0.295" | __ | 39/64" | 5/16" | 3/32" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | 15/32" | 5 | 000000000 | 00000 |
| C | M4 | 1 | 13/32" | 0.354" | __ | 3/4" | 13/32" | 1/8" | 1 | Metric Rounded Trapezoidal | 1:1 | 1 | 19/32" | 10 | 000000000 | 00000 |
PEEK Plastic with Wear-Compensating Internal O-Ring | ||||||||||||||||
| C | M2 | 0.4 | 5/16" | 0.228" | __ | 15/32" | 15/64" | 5/64" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.375 | 11/32" | 1 | 000000000 | 000000 |
| C | M3 | 0.5 | 25/64" | 0.315" | __ | 39/64" | 5/16" | 3/32" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | 15/32" | 2 | 000000000 | 000000 |
| C | M4 | 1 | 31/64" | 0.406" | __ | 3/4" | 13/32" | 1/8" | 1 | Metric Rounded Trapezoidal | 1:1 | 1 | 19/32" | 5 | 000000000 | 000000 |