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Selecting Compatible Lead Screws and Nuts
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About Nuts, Materials, and Finishes
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Water-Resistant Acetal Hex Nuts
For use in wet environments, these nuts resist alcohol, gasoline, and solvents.
For technical drawings and 3-D models, click on a part number.
Reinforced Plastic Knurled-Head Thumb Nuts
An aluminum insert with strong threads withstands more torque during installation. They're chemical resistant, nonconductive, and lightweight. The head is knurled for slip-resistant controlled adjustment and the collar raises the head to make it easy to grip.
For technical drawings and 3-D models, click on a part number.
Collar | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Dia. | Ht. | Head Dia. | Ht. | Temp. Range, °F | Color | Pkg. Qty. | Pkg. | |
Acetal Plastic | |||||||||
| 4-40 | 9/32" | 3/64" | 5/16" | 3/16" | 32° to 180° | Black | 10 | 000000000 | 00000 |
| 6-32 | 23/64" | 3/64" | 3/8" | 7/32" | 32° to 180° | Black | 10 | 000000000 | 0000 |
| 8-32 | 25/64" | 3/32" | 1/2" | 17/64" | 32° to 180° | Black | 10 | 000000000 | 0000 |
| 10-24 | 31/64" | 1/8" | 5/8" | 19/64" | 32° to 180° | Black | 10 | 000000000 | 0000 |
| 10-32 | 31/64" | 1/8" | 5/8" | 19/64" | 32° to 180° | Black | 10 | 000000000 | 0000 |
| 1/4"-20 | 35/64" | 1/16" | 1" | 23/64" | 32° to 180° | Black | 10 | 000000000 | 00000 |
| 1/4"-20 | 35/64" | 3/16" | 3/4" | 23/64" | 32° to 180° | Black | 10 | 000000000 | 0000 |
| 1/4"-28 | 35/64" | 1/16" | 1" | 23/64" | 32° to 180° | Black | 10 | 000000000 | 00000 |
| 1/4"-28 | 35/64" | 3/16" | 3/4" | 23/64" | 32° to 180° | Black | 10 | 000000000 | 0000 |
| 5/16"-18 | 41/64" | 1/8" | 1" | 27/64" | 32° to 180° | Black | 10 | 000000000 | 00000 |
| 5/16"-24 | 41/64" | 1/8" | 1" | 27/64" | 32° to 180° | Black | 10 | 000000000 | 00000 |
Thread | Collar | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Dia., mm | Ht., mm | Head Dia., mm | Ht., mm | Temp. Range, °F | Color | Pkg. Qty. | Pkg. | |
Acetal Plastic | ||||||||||
| M3 | 0.5 | 9.1 | 1.2 | 9.6 | 5.6 | 32° to 180° | Black | 10 | 000000000 | 00000 |
| M4 | 0.7 | 9.9 | 2.4 | 13 | 6.7 | 32° to 180° | Black | 10 | 000000000 | 0000 |
| M5 | 0.8 | 11.5 | 3.2 | 16 | 7.5 | 32° to 180° | Black | 10 | 000000000 | 0000 |
| M6 | 1 | 13.6 | 4.8 | 19 | 9.1 | 32° to 180° | Black | 10 | 000000000 | 0000 |
| M6 | 1 | 14.3 | 1.6 | 26 | 9.1 | 32° to 180° | Black | 10 | 000000000 | 00000 |
| M8 | 1.25 | 16.3 | 3.2 | 26 | 10.7 | 32° to 180° | Black | 10 | 000000000 | 00000 |
Rounded Head Quarter-Turn Captive
Panel Screws with Clip-On Nut
The nut clips onto the edge of a thin panel, allowing you to mount the screw near edges. A quarter-turn locks and releases access panels, doors, and covers. The screw is held to the outer panel by a retainer. Length is measured from under the screw head.
Acetal plastic nuts and screws are chemical resistant and lightweight.
For Panel Thick. | Head | Slotted | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inner | Total | For Hole Dia. | For Min. Space Between Panels | Dia. | Ht. | Lg. | Nut Wd. | Retainer Material | Temperature Range, °F | Color | Each | |
Acetal Plastic | ||||||||||||
| 0.03" to 0.09" | 0.19" to 0.24" | 0.512" | 0.04" | 0.625" | 0.13" | 0.85" | 0.945" | Acetal Plastic | -40° to 190° | Black | 000000000 | 00000 |
| 0.03" to 0.09" | 0.24" to 0.29" | 0.512" | 0.04" | 0.625" | 0.13" | 0.9" | 0.945" | Acetal Plastic | -40° to 190° | Black | 000000000 | 0000 |
| 0.03" to 0.09" | 0.34" to 0.39" | 0.512" | 0.04" | 0.625" | 0.13" | 1" | 0.945" | Acetal Plastic | -40° to 190° | Black | 000000000 | 0000 |
| 0.03" to 0.09" | 0.44" to 0.49" | 0.512" | 0.04" | 0.625" | 0.13" | 1.1" | 0.945" | Acetal Plastic | -40° to 190° | Black | 000000000 | 0000 |
| Replacement Plastic Retainers (Pkg. of 10) | 000000000 | Pkg. | 00000 |
Wing Head Quarter-Turn Captive
Panel Screws with Clip-On Nut
A clip-on nut allows you to mount the screw near the edge of a thin panel. Lock and release access panels, doors, and covers with a quarter-turn. The screw is held to the outer panel by a retainer. Length is measured from under the screw head.
Acetal plastic nuts and screws are chemical resistant and lightweight.
For Panel Thick. | Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inner | Total | For Hole Dia. | Wd. | Ht. | Lg. | Nut Wd. | Retainer Material | Temperature Range, °F | Color | Each | |
Acetal Plastic | |||||||||||
| 0.03" to 0.09" | 0.29" to 0.34" | 0.512" | 1.1" | 0.43" | 0.95" | 0.945" | Acetal Plastic | -40° to 190° | Black | 000000000 | 00000 |
| 0.03" to 0.09" | 0.34" to 0.39" | 0.512" | 1.1" | 0.43" | 1" | 0.945" | Acetal Plastic | -40° to 190° | Black | 000000000 | 0000 |
| 0.03" to 0.09" | 0.44" to 0.49" | 0.512" | 1.1" | 0.43" | 1.1" | 0.945" | Acetal Plastic | -40° to 190° | Black | 000000000 | 0000 |
| Replacement Plastic Retainers (Pkg. of 10) | 000000000 | 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 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 | 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 | 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 | 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 | 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 | 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 | 1:1 | 0.048" | 39/64" | __ | Not Rated | 25 | 0000000 | 00000 |
| B | 1/4"-20 | 1" | 0.5" | 1" | __ | __ | 3/16" | 1 | 1:1 | 0.05" | __ | 3/4" | 9,700 | 50 | 00000000 | 00000 |
| B | 1/4"-40 | 1" | 0.5" | 1" | __ | __ | 3/16" | 1 | 1:1 | 0.025" | __ | 3/4" | 9,000 | 50 | 00000000 | 00000 |
| B | 3/8"-10 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 1 | 1:1 | 0.1" | __ | 7/8" | 9,700 | 75 | 0000000 | 00000 |
| B | 3/8"-20 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 1 | 1:1 | 0.05" | __ | 7/8" | 9,700 | 75 | 00000000 | 00000 |
| B | 3/8"-40 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 1 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 1:1 | 0.1" | __ | 2" | 9,700 | 150 | 00000000 | 000000 |
| C | 1/4"-20 | 1" | 0.5" | 1" | __ | __ | 3/16" | 1 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 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 | 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 | 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 | 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 | 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 | 4:1 | 0.192" | 39/64" | __ | Not Rated | 25 | 0000000 | 00000 |
| B | 1/4"-8 | 1" | 0.5" | 1" | __ | __ | 3/16" | 8 | 8:1 | 1" | __ | 3/4" | 9,700 | 50 | 0000000 | 00000 |
| B | 1/4"-16 | 1" | 0.5" | 1" | __ | __ | 3/16" | 4 | 4:1 | 0.25" | __ | 3/4" | 9,700 | 50 | 0000000 | 00000 |
| B | 1/4"-20 | 1" | 0.5" | 1" | __ | __ | 3/16" | 2 | 2:1 | 0.1" | __ | 3/4" | 9,700 | 50 | 00000000 | 00000 |
| B | 3/8"-5 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 5 | 5:1 | 1" | __ | 7/8" | 9,700 | 75 | 0000000 | 00000 |
| B | 3/8"-8 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 4 | 4:1 | 0.5" | __ | 7/8" | 9,700 | 75 | 0000000 | 00000 |
| B | 3/8"-10 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 2 | 2:1 | 0.2" | __ | 7/8" | 9,700 | 75 | 0000000 | 00000 |
| B | 3/8"-12 | 1" | 0.625" | 1 7/64" | __ | __ | 3/16" | 3 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 8:1 | 1" | __ | 1 7/16" | 9,000 | 350 | 00000000 | 00000 |
| B | 3/4"-8 | 2" | 1.125" | 1 51/64" | __ | __ | 1/4" | 2 | 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 | 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 | 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 | 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 | 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 | 2:1 | 0.25" | __ | 2" | 9,700 | 150 | 0000000 | 000000 |
| C | 1/4"-8 | 1" | 0.5" | 1" | __ | __ | 3/16" | 8 | 8:1 | 1" | __ | 3/4" | 9,700 | 5 | 0000000 | 00000 |
| C | 1/4"-16 | 1" | 0.5" | 1" | __ | __ | 3/16" | 4 | 4:1 | 0.25" | __ | 3/4" | 9,700 | 5 | 0000000 | 00000 |
| C | 1/4"-20 | 1" | 0.5" | 1" | __ | __ | 3/16" | 2 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 8:1 | 1" | __ | 1 1/4" | 9,700 | 25 | 0000000 | 00000 |
| C | 1/2"-10 | 2" | 0.891" | 1 39/64" | __ | __ | 17/64" | 2 | 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 | 12:1 | 2" | __ | 1 3/8" | 9,700 | 35 | 00000000 | 00000 |
| C | 5/8"-8 | 2" | 1.063" | 1 51/64" | __ | __ | 17/64" | 4 | 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.
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.
| Thread Size | Thread Pitch, mm | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Hardness | Tensile Strength, psi | Dynamic Thrust Load Cap. | Temperature Range, °F | Each | ||
Acetal Plastic | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | M8 | 2.5 | 15/32" | 0.709" | 4 | 4:1 | 10 | Durometer 74D | 10,000 | Not Rated | -40° to 185° | 0000000 | 000000 |
| A | M10 | 3 | 25/32" | 0.866" | 4 | 4:1 | 12 | Durometer 74D | 10,000 | Not Rated | -40° to 185° | 0000000 | 00000 |
| A | M12 | 2.5 | 15/16" | 1.024" | 2 | 2:1 | 5 | Durometer 74D | 10,000 | Not Rated | -40° to 185° | 0000000 | 00000 |
| A | M16 | 5 | 1 17/64" | 1.417" | 7 | 7:1 | 35 | Durometer 74D | 10,000 | Not Rated | -40° to 185° | 0000000 | 00000 |
| A | M20 | 5 | 1 37/64" | 1.772" | 4 | 4:1 | 20 | Durometer 74D | 10,000 | Not Rated | -40° to 185° | 0000000 | 00000 |
| A | M20 | 7.5 | 1 37/64" | 1.772" | 8 | 8:1 | 60 | Durometer 74D | 10,000 | Not Rated | -40° to 185° | 0000000 | 00000 |
External Thread | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Hex Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Size | Lg. | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | ||
Acetal Plastic | |||||||||||||||
| B | M2 | 0.5 | 11/16" | 0.297" | 7/16" | 2 | 2:1 | 1 | 3/8"-24 | 3/16" | 8,000 | 10 | -40° to 185° | 000000000 | 000000 |
| B | M4 | 1.25 | 11/16" | 0.297" | 7/16" | 8 | 8:1 | 10 | 3/8"-24 | 3/16" | 8,000 | 25 | -40° to 185° | 000000000 | 00000 |
| B | M5 | 1.25 | 11/16" | 0.297" | 7/16" | 4 | 4:1 | 5 | 3/8"-24 | 3/16" | 8,000 | 25 | -40° to 185° | 000000000 | 00000 |
| B | M8 | 2 | 1" | 0.548" | 11/16" | 2 | 2:1 | 4 | 5/8"-18 | 1/4" | 8,000 | 75 | -40° to 185° | 000000000 | 00000 |
Flange | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | 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 | 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 | 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 | 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 | 2:1 | 4 | __ | 7/8" | 8,000 | 75 | -40° to 185° | 000000000 | 00000 |
| E | M8 | 2.5 | 25/32" | 0.787" | 1 11/32" | __ | __ | 13/64" | 4 | 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 | 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 | 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 | 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 | 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 | 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 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 1:1 | 1.5 | __ | 7/8" | 8,000 | 75 | -40° to 185° | 0000000 | 00000 |