System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Type Thread Type |
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Nut Type Nut Type |
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| Externally Threaded | Round |
Height Height |
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Thread Direction Thread Direction |
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| Right Hand | Left Hand |
Number of Thread Starts Number of Thread Starts |
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Speed Ratio Speed Ratio |
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Travel Distance per Turn Travel Distance per Turn |
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Hardness Hardness |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Tensile Strength Tensile Strength |
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Specifications Met Specifications Met |
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For Shaft Type For Shaft Type |
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 | Acme Lead Screw |
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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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.
932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance. PET plastic nuts are lightweight and corrosion resistant.
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.
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. | Temperature Range, °F | Each | |
673 Bronze | |||||||||||||
| 2"-4 | 2 3/4" | 2.75" | 1 | 1:1 | 0.25" | 2 35/64"-18 | 7/8" | Class 2C | Brinell 70 | Not Rated | __ | 000000000 | 0000000 |
PET Plastic | |||||||||||||
| 2"-4 | 3 15/32" | 2.75" | 1 | 1:1 | 0.25" | 2 35/64"-18 | 7/8" | Class 2C | Not Rated | 10,000 | 15° to 175° | 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 | ||||||||||||
| 2"-4 | 2 3/4" | 2.75" | 1 | 1:1 | 0.25" | 2 35/64"-18 | 7/8" | Class 2C | Brinell 70 | Not Rated | 000000000 | 0000000 |
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.
932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair 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.
Round nuts move objects along the length of a lead screw.
| Thread Size | Ht. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
932 Bearing Bronze | ||||||||||
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| 2"-4 | 4 1/64" | 3 9/32" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | ASTM B505 | 000000000 | 0000000 |
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"-4 | 3 1/2" | 1" | 1 | Brinell 163 | 0000000 | 000000 |