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Travel Distance per Turn
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DFARS Specialty Metals
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Precision Acme Lead Screws and Nuts
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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.
Round Nuts—Right-Hand Thread
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Iron—Iron nuts have good machinability and high strength.
932 Bearing Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
PET—PET plastic nuts are lightweight and corrosion resistant.
Travel Distance per Turn—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. | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength | Dynamic Thrust Load Cap., lb. | Temp., ° F | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/8"-16 | 3/4" | 1.344" | Acme | 1:1 | 1 | 0.063" | Acme Class 2C | Brinell 217 | Not Rated | Not Rated | — | 95365A529 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
932 Bearing Bronze | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/8"-16 | 3/4" | 1.344" | Acme | 1:1 | 1 | 0.063" | Acme Class 2C | Brinell 65 | Not Rated | 700 | — | 1343K39 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PET | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/8"-16 | 3/4" | 1.344" | Acme | 1:1 | 1 | 0.063" | Acme Class 2C | Not Rated | Not Rated | 350 | 15 to 175 | 1349K39 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Round Nuts—Left-Hand Thread
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Iron—Iron nuts have good machinability and high strength.
Travel Distance per Turn—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. | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength | Dynamic Thrust Load Cap. | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/8"-16 | 3/4" | 1.344" | Acme | 1:1 | 1 | 0.063" | Acme Class 2C | Brinell 217 | Not Rated | Not Rated | 95365A629 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Externally Threaded Nuts—Right-Hand Thread
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Combine externally threaded nuts with a flange to create a custom flange nut.
673 Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
PET—PET plastic nuts are lightweight and corrosion resistant.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
External Thread | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Thread Size | Lg. | Dia. | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Tensile Strength | Dynamic Thrust Load Cap., lb. | Temp., ° F | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
673 Bronze | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/8"-16 | 5/8" | 0.688" | Acme | 1:1 | 1 | 0.063" | 9/16"-18 | 3/8" | Acme Class 2C | Brinell 70 | Not Rated | Not Rated | — | 95072A129 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PET | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/8"-16 | 5/8" | 0.688" | Acme | 1:1 | 1 | 0.063" | 9/16"-18 | 3/8" | Acme Class 2C | Not Rated | Not Rated | 350 | 15 to 175 | 95075A229 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
