System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Thread Type Thread Type |
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Nut Type Nut Type |
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| Externally Threaded | Hex |
Thread Direction Thread Direction |
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| Right Hand | Left Hand |
Material Material |
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Hardness Hardness |
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Tensile Strength Tensile Strength |
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Number of Thread Starts Number of Thread Starts |
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Travel Distance per Turn Travel Distance per Turn |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Speed Ratio Speed Ratio |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Thrust Load Capacity Thrust Load Capacity |
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Finish Finish |
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Diameter Diameter |
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Threading Threading |
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 | Fully Threaded |
Selecting Compatible Lead Screws and Nuts
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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.
Carbon steel components are easier to machine than alloy steel components. Zinc-plated carbon steel components have mild corrosion resistance. Alloy steel components are harder and stronger than carbon steel components. 18-8 stainless steel components have good 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.
| Thread Size | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Tensile Strength, psi | Specifications Met | Each | |
Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/2"-5 | 12" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 000000000 | 000000 |
| 1 1/2"-5 | 3 ft. | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 000000000 | 00000 |
| 1 1/2"-5 | 6 ft. | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 000000000 | 000000 |
Alloy Steel | |||||||||||
| 1 1/2"-5 | 12" | 1 | 1:1 | 0.2" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 00000 |
| 1 1/2"-5 | 3 ft. | 1 | 1:1 | 0.2" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 000000 |
| 1 1/2"-5 | 6 ft. | 1 | 1:1 | 0.2" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 000000 |
18-8 Stainless Steel | |||||||||||
| 1 1/2"-5 | 3 ft. | 1 | 1:1 | 0.2" | Class 2G | __ | Rockwell B96 | Not Rated | __ | 000000000 | 000000 |
| 1 1/2"-5 | 6 ft. | 1 | 1:1 | 0.2" | Class 2G | __ | Rockwell B96 | Not Rated | __ | 000000000 | 000000 |
| Thread Size | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Tensile Strength, psi | Specifications Met | Each | |
Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/2"-5 | 3 ft. | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B61 | 53,000 | ASTM A108 | 000000000 | 000000 |
| 1 1/2"-5 | 6 ft. | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 000000000 | 000000 |
Alloy Steel | |||||||||||
| 1 1/2"-5 | 3 ft. | 1 | 1:1 | 0.2" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 000000 |
| 1 1/2"-5 | 6 ft. | 1 | 1:1 | 0.2" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 000000 |
Hex nuts fasten and position lead screw components.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
Carbon Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 1/2"-5 | 1 15/32" | 2 3/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 000000 |
Zinc-Plated Carbon Steel | |||||||||
| 1 1/2"-5 | 1 15/32" | 2 3/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 00000 |
18-8 Stainless Steel | |||||||||
| 1 1/2"-5 | 1 1/2" | 2 1/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B97 | 000000000 | 000000 |
Hex nuts fasten and position lead screw components.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Each | |
Carbon Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/2"-5 | 1 1/2" | 2 3/8" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | 000000000 | 000000 |
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.
Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance. 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.
| Thread Size | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Each | |
Black-Oxide 4140 Alloy Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/2"-5 | 3 ft. | 1 | 1:1 | 0.2" | ±0.009" per ft. | Class 2C | Brinell 271 | 125,000 | 000000000 | 0000000 |
| 1 1/2"-5 | 6 ft. | 1 | 1:1 | 0.2" | ±0.009" per ft. | Class 2C | Brinell 271 | 125,000 | 000000000 | 000000 |
| Thread Size | Lg., ft. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Each | |
Black-Oxide 4140 Alloy Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/2"-5 | 3 | 1 | 1:1 | 0.2" | ±0.009" per ft. | Class 2C | Brinell 271 | 125,000 | 000000000 | 0000000 |
| 1 1/2"-5 | 6 | 1 | 1:1 | 0.2" | ±0.009" per ft. | Class 2C | Brinell 271 | 125,000 | 000000000 | 000000 |
Combine externally threaded nuts with a flange to create a custom flange nut.
External Thread | ||||||||||||
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| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Each | |
673 Bronze | ||||||||||||
| 1 1/2"-5 | 2 19/64" | 2.125" | 1 | 1:1 | 0.2" | 1 31/32"-18 | 13/16" | Class 2C | Brinell 70 | Not Rated | 000000000 | 0000000 |
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. | Each | |
673 Bronze | ||||||||||||
| 1 1/2"-5 | 2 19/64" | 2.125" | 1 | 1:1 | 0.2" | 1 31/32"-18 | 13/16" | Class 2C | Brinell 70 | Not Rated | 000000000 | 0000000 |
