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System of Measurement
Thread Size
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Number of Thread Starts
Travel Distance per Turn
Thread Direction
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Threading
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DFARS Specialty Metals
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REACH
Tensile Strength
Dynamic Thrust Load Capacity
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External Thread Type
Fast-Travel Precision Acme Lead Screws and Nuts
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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.
Lead Screws—Right-Hand Thread
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1018 Low-Carbon Steel—Carbon steel lead screws and flanges have good machinability.
Black-Oxide 4140 Alloy Steel—Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance.
304 Stainless Steel—304 stainless steel lead screws have good corrosion resistance.
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. | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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1018 Low-Carbon Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 18" | Stub Acme | 4:1 | 4 | 0.333" | ±0.009"/1 ft. | Acme Class 2C | Not Rated | Not Rated | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 3 ft. | Stub Acme | 4:1 | 4 | 0.333" | ±0.009"/1 ft. | Acme Class 2C | Not Rated | Not Rated | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Black-Oxide 4140 Alloy Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 3 ft. | Stub Acme | 4:1 | 4 | 0.333" | ±0.009"/1 ft. | Acme Class 2C | Brinell 271 | 125,000 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 6 ft. | Stub Acme | 4:1 | 4 | 0.333" | ±0.009"/1 ft. | Acme Class 2C | Brinell 271 | 125,000 | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
304 Stainless Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 18" | Stub Acme | 4:1 | 4 | 0.333" | ±0.009"/1 ft. | Acme Class 2C | Not Rated | Not Rated | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 3 ft. | Stub Acme | 4:1 | 4 | 0.333" | ±0.009"/1 ft. | Acme Class 2C | Not Rated | Not Rated | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 6 ft. | Stub Acme | 4:1 | 4 | 0.333" | ±0.009"/1 ft. | Acme Class 2C | Brinell 150 | 72,000 | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Iron | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 3/4" | 1.344" | Stub Acme | 4:1 | 4 | 0.333" | Acme Class 2C | Brinell 217 | Not Rated | Not Rated | — | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
932 Bearing Bronze | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 3/4" | 1.344" | Acme | 4:1 | 4 | 0.333" | Acme Class 2C | Brinell 65 | Not Rated | 320 | — | 00000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PET | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 3/4" | 1.344" | Acme | 4:1 | 4 | 0.333" | Acme Class 2C | Not Rated | Not Rated | 160 | 15 to 175 | 00000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Round Nuts—Left-Hand Thread
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932 Bearing Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
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. | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
932 Bearing Bronze | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 3/4" | 1.344" | Acme | 4:1 | 4 | 0.333" | Acme Class 2C | Brinell 65 | Not Rated | 320 | 00000000 | 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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 5/8" | 0.688" | Stub Acme | 4:1 | 4 | 0.333" | 9/16"-18 | 3/8" | Acme Class 2C | Brinell 70 | Not Rated | Not Rated | — | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PET | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-12 | 5/8" | 0.688" | Acme | 4:1 | 4 | 0.333" | 9/16"-18 | 3/8" | Acme Class 2C | Not Rated | Not Rated | 160 | 15 to 175 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
