Thread Size Thread Size |
|---|
Thread Type Thread Type |
|---|
Thread Direction Thread Direction |
|---|
| Right Hand | Left Hand |
Diameter Diameter |
|---|
Length Length |
|---|
|
|
|
Flange Diameter Flange Diameter |
|---|
Flange Material Flange Material |
|---|
|
Travel Distance per Turn Travel Distance per Turn |
|---|
Flange Thickness Flange Thickness |
|---|
|
|
|
Flange Hardness Flange Hardness |
|---|
|
Dynamic Thrust Load Capacity Dynamic Thrust Load Capacity |
|---|
|
Tensile Strength Tensile Strength |
|---|
|
|
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
|---|
Hardness Hardness |
|---|
|
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
|---|
|
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
|---|
|
Selecting Compatible Lead Screws and Nuts
More
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.
932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair 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 have wide, machinable surfaces for custom mounting.
Flange | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | Dia. | Thick. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Each | |
932 Bearing Bronze | |||||||||||||
| 1/2"-10 | 1 3/4" | 1" | 2" | 3/8" | 1 | 1:1 | 0.1" | Class 2C | Brinell 65 | 35,000 | 1,200 | 000000000 | 0000000 |
| 3/4"-5 | 2 1/4" | 1.375" | 2 5/8" | 9/16" | 1 | 1:1 | 0.2" | Class 2C | Brinell 65 | 35,000 | 2,800 | 000000000 | 000000 |
| 3/4"-6 | 2 1/4" | 1.375" | 2 5/8" | 9/16" | 1 | 1:1 | 0.167" | Class 2C | Brinell 65 | 35,000 | 2,800 | 000000000 | 000000 |
| 3/4"-10 | 2 1/4" | 1.375" | 2 5/8" | 9/16" | 1 | 1:1 | 0.1" | Class 2C | Brinell 65 | 35,000 | 2,800 | 000000000 | 000000 |
| 1"-4 | 3" | 1.625" | 3" | 5/8" | 1 | 1:1 | 0.25" | Class 2C | Brinell 65 | 35,000 | 5,000 | 000000000 | 000000 |
| 1"-5 | 3" | 1.625" | 3" | 5/8" | 1 | 1:1 | 0.2" | Class 2C | Brinell 65 | 35,000 | 5,000 | 000000000 | 000000 |
| 1"-10 | 3" | 1.625" | 3" | 5/8" | 1 | 1:1 | 0.1" | Class 2C | Brinell 65 | 35,000 | 5,000 | 000000000 | 000000 |
| 1 1/4"-5 | 3 3/4" | 1.875" | 3 1/4" | 5/8" | 1 | 1:1 | 0.2" | Class 2C | Brinell 65 | 35,000 | 7,800 | 000000000 | 000000 |
Flanges for Precision Acme Nuts


Thread onto an externally threaded acme nut to create a custom flange nut.
For technical drawings and 3-D models, click on a part number.
| 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 |
| 3 9/64"-12 | 5 3/8" | 1 37/64" | 4 3/8" | 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 |
| 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 |
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 size.
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.


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 | ||||||||||||||||
| M10 | 2 | 5/8" | 0.688" | 1 39/64" | 13/32" | 1 | 1:1 | 2 | 1 1/8" | 7H | Brinell 126 | Not Rated | 670 | DIN 103 | 0000000 | 000000 |
| M12 | 3 | 3/4" | 1.125" | 2 39/64" | 17/32" | 1 | 1:1 | 3 | 2 3/32" | 7H | Brinell 126 | Not Rated | 1,100 | DIN 103 | 0000000 | 00000 |
| 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 | 00000 |
| M20 | 4 | 1 1/4" | 1.125" | 2 39/64" | 17/32" | 1 | 1:1 | 4 | 2 3/32" | 7H | Brinell 126 | Not Rated | 3,100 | DIN 103 | 0000000 | 00000 |
| M24 | 5 | 1 1/2" | 1.5" | 2 3/4" | 33/64" | 1 | 1:1 | 5 | 2 17/64" | 7H | Brinell 126 | Not Rated | 4,500 | DIN 103 | 0000000 | 00000 |
| M28 | 5 | 1 3/4" | 2.125" | 4 13/64" | 53/64" | 1 | 1:1 | 5 | 3 7/16" | 7H | Brinell 126 | 75,000 | 6,100 | DIN 103 | 0000000 | 000000 |
| M40 | 7 | 2 19/64" | 2.125" | 4 13/64" | 53/64" | 1 | 1:1 | 7 | 3 7/16" | 7H | Brinell 126 | Not Rated | 12,300 | DIN 103 | 0000000 | 000000 |
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. | 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 |
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. | 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 |
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 type, thread size, thread pitch, and number of thread starts.
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.





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. | Temp. Range, °F | Each | ||
Acetal Plastic | |||||||||||||||||||
| C | M2 | 0.5 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | 39/64" | __ | 8,000 | 10 | -40° to 185° | 000000000 | 000000 |
| C | M4 | 1.25 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 8 | Metric Rounded Trapezoidal | 8:1 | 10 | 39/64" | __ | 8,000 | 25 | -40° to 185° | 000000000 | 00000 |
| C | M5 | 1.25 | 1/2" | 0.297" | __ | 3/4" | 13/32" | 1/8" | 4 | Metric Rounded Trapezoidal | 4:1 | 5 | 39/64" | __ | 8,000 | 25 | -40° to 185° | 000000000 | 00000 |
| D | M8 | 2 | 3/4" | 0.548" | 1 1/8" | __ | __ | 3/16" | 2 | Metric Rounded Trapezoidal | 2:1 | 4 | __ | 7/8" | 8,000 | 75 | -40° to 185° | 000000000 | 00000 |
| E | M8 | 2.5 | 25/32" | 0.787" | 1 27/64" | __ | __ | 5/16" | 4 | Metric Rounded Trapezoidal | 4:1 | 10 | __ | 1 7/64" | 10,000 | Not Rated | -40° to 185° | 0000000 | 00000 |
| E | M10 | 3 | 63/64" | 0.984" | 1 21/32" | __ | __ | 25/64" | 4 | Metric Rounded Trapezoidal | 4:1 | 12 | __ | 1 11/32" | 10,000 | Not Rated | -40° to 185° | 0000000 | 00000 |
| E | M12 | 2.5 | 1 3/8" | 1.102" | 1 57/64" | __ | __ | 15/32" | 2 | Metric Rounded Trapezoidal | 2:1 | 5 | __ | 1 1/2" | 10,000 | Not Rated | -40° to 185° | 0000000 | 00000 |
| E | M16 | 5 | 1 3/8" | 1.102" | 1 57/64" | __ | __ | 15/32" | 7 | Metric Rounded Trapezoidal | 7:1 | 35 | __ | 1 1/2" | 10,000 | Not Rated | -40° to 185° | 0000000 | 00000 |
| E | M20 | 5 | 1 47/64" | 1.26" | 2 11/64" | __ | __ | 15/32" | 4 | Metric Rounded Trapezoidal | 4:1 | 20 | __ | 1 49/64" | 10,000 | Not Rated | -40° to 185° | 0000000 | 000000 |
| E | M20 | 7.5 | 1 47/64" | 1.26" | 2 11/64" | __ | __ | 15/32" | 8 | Metric Rounded Trapezoidal | 8:1 | 60 | __ | 1 49/64" | 10,000 | Not Rated | -40° to 185° | 0000000 | 000000 |
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.



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 Trapezoidal | 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 Trapezoidal | 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 Trapezoidal | 1:1 | 1.5 | __ | 7/8" | 8,000 | 75 | -40° to 185° | 0000000 | 00000 |
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 and size.
932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut or handle 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. Flange nuts have a wide machinable flange for custom mounting.
Flange | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Ht. | Dia. | Dia. | Thick. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
932 Bearing Bronze | |||||||||||
| 3/8"-12 | 7/8" | 1/2" | 1" | 1/8" | 1 | 1:1 | 0.083" | Class 2G | Not Rated | 000000000 | 000000 |
| 1/2"-10 | 1" | 3/4" | 1 1/4" | 1/8" | 1 | 1:1 | 0.1" | Class 2G | Not Rated | 000000000 | 000000 |
| 5/8"-8 | 1 1/4" | 7/8" | 1 1/2" | 1/4" | 1 | 1:1 | 0.125" | Class 2G | Not Rated | 000000000 | 000000 |
| 3/4"-5 | 1 1/2" | 1" | 2" | 3/8" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 000000 |
| 3/4"-6 | 1 1/2" | 1" | 2" | 3/8" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | 000000000 | 000000 |
| 7/8"-6 | 1 3/4" | 1 1/4" | 2 1/4" | 1/2" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | 000000000 | 000000 |
| 1"-4 | 2" | 1 1/2" | 2 1/2" | 1/2" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 000000 |
| 1"-5 | 2" | 1 1/2" | 2 1/2" | 1/2" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 000000 |
| 1"-6 | 2" | 1 1/2" | 2 1/2" | 1/2" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | 000000000 | 000000 |
| 1"-10 | 2" | 1 1/2" | 2 1/2" | 1/2" | 1 | 1:1 | 0.1" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/8"-5 | 2 1/4" | 1 3/4" | 2 3/4" | 5/8" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/4"-4 | 2 1/2" | 2" | 3" | 3/4" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/4"-5 | 2 1/2" | 2" | 3" | 3/4" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/2"-4 | 3" | 2 1/2" | 3 1/2" | 3/4" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 000000 |
| 2"-4 | 4" | 3" | 4" | 1" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 000000 |

Flange nuts move objects along the length of a lead screw. Flange nuts have a wide machinable flange for custom mounting.
Flange | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Ht. | Dia. | Dia. | Thick. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
932 Bearing Bronze | |||||||||||
| 1/2"-10 | 1" | 3/4" | 1 1/4" | 1/8" | 1 | 1:1 | 0.1" | Class 2G | Not Rated | 000000000 | 0000000 |
| 5/8"-8 | 1 1/4" | 7/8" | 1 1/2" | 1/4" | 1 | 1:1 | 0.125" | Class 2G | Not Rated | 000000000 | 000000 |
| 3/4"-5 | 1 1/2" | 1" | 2" | 3/8" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 000000 |
| 3/4"-6 | 1 1/2" | 1" | 2" | 3/8" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | 000000000 | 000000 |
| 7/8"-6 | 1 3/4" | 1 1/4" | 2 1/4" | 1/2" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | 000000000 | 000000 |
| 1"-5 | 2" | 1 1/2" | 2 1/2" | 1/2" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 000000 |
| 1"-6 | 2" | 1 1/2" | 2 1/2" | 1/2" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/8"-5 | 2 1/4" | 1 3/4" | 2 3/4" | 5/8" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/4"-4 | 2 1/2" | 2" | 3" | 3/4" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/4"-5 | 2 1/2" | 2" | 3" | 3/4" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/2"-4 | 3" | 2 1/2" | 3 1/2" | 3/4" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 000000 |
| 2"-4 | 4" | 3" | 4" | 1" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 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, and pitch. 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.
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 | ||||||||||||
| M10 | 2 | 35 | 28 | 48 | 12 | 1 | 1:1 | 2 | 7H | Not Rated | 000000000 | 0000000 |
| M12 | 3 | 35 | 28 | 48 | 12 | 1 | 1:1 | 3 | 7H | Not Rated | 000000000 | 00000 |
| M16 | 4 | 35 | 28 | 48 | 12 | 1 | 1:1 | 4 | 7H | Not Rated | 000000000 | 00000 |
| M20 | 4 | 44 | 32 | 55 | 12 | 1 | 1:1 | 4 | 7H | Not Rated | 000000000 | 000000 |
| M26 | 5 | 46 | 38 | 62 | 14 | 1 | 1:1 | 5 | 7H | Not Rated | 000000000 | 000000 |
| M40 | 7 | 66 | 63 | 98 | 16 | 1 | 1:1 | 7 | 7H | Not Rated | 000000000 | 000000 |

























