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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Construction Construction |
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Thread Direction Thread Direction |
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Material Material |
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Hardness Hardness |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Travel Distance per Turn Travel Distance per Turn |
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Number of Thread Starts Number of Thread Starts |
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Threading Threading |
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![]() | Fully Threaded |
Clamping Screw Length Clamping Screw Length |
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Clamping Screw Material Clamping Screw Material |
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Clamping Screw Thread Size Clamping Screw Thread Size |
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Number of Clamping Screws Included Number of ClampingScrews Included |
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Finish Finish |
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Tensile Strength Tensile Strength |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Selecting Compatible Lead Screws and Nuts
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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.
Carbon steel lead screws and flanges have good machinability.
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 | |
1018 Carbon Steel | ||||||||||
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2 1/2"-3 | 3 ft. | 1 | 1:1 | 0.333" | ±0.009" per ft. | Class 2C | Brinell 126 | 64,000 | 000000000 | 0000000 |
2 1/2"-3 | 6 ft. | 1 | 1:1 | 0.333" | ±0.009" per ft. | Class 2C | Brinell 126 | 64,000 | 000000000 | 000000 |
Clamping Acme Lead Screw Collars

Thread these one-piece collars onto an Acme lead screw to separate and position components, or use them as an end stop to limit travel. Tighten the clamping screw to secure.
To ensure compatibility, please select a collar that has the same thread type, direction, and size as your lead screw.
Black-oxide carbon steel collars have mild corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Thread Size | OD | Wd. | No. of Thread Starts | Hardness | Each | |
Right-Hand Threaded | ||||||
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Black-Oxide 12L14 Carbon Steel | ||||||
2 1/2"-3 | 4" | 1" | 1 | Brinell 163 | 0000000 | 0000000 |