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System of Measurement
Thread Size
Nut Type
Component
Thread Direction
Length
Number of Thread Starts
Travel Distance per Turn
External Thread Size
Tensile Strength
DFARS Specialty Metals
Export Control Classification Number (ECCN)
Speed Ratio
External Thread Length
External Thread Type
Dynamic Thrust Load Capacity
Acme Lead Screws and Nuts
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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, thread size, and number of thread starts.
Hex Nuts—Right-Hand Thread
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Hex nuts fasten and position lead screw components.
Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
Zinc-Plated Carbon Steel—Zinc-plated carbon steel components have mild corrosion resistance and are easier to machine than alloy steel components.
18-8 Stainless Steel—18-8 stainless steel components have good corrosion resistance.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
Thread Size | Thread Type | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Carbon Steel | |||||||||||||
| 1 1/2"-5 | Acme | 1 15/32" | 2 3/8" | 1 | 1:1 | 0.2" | Acme Class 2G | Rockwell B75 | Not Rated | 94815A121 | 000000 | ||
Zinc-Plated Carbon Steel | |||||||||||||
| 1 1/2"-5 | Acme | 1 15/32" | 2 3/8" | 1 | 1:1 | 0.2" | Acme Class 2G | Rockwell B75 | Not Rated | 98948A129 | 00000 | ||
18-8 Stainless Steel | |||||||||||||
| 1 1/2"-5 | Acme | 1 1/2" | 2 1/4" | 1 | 1:1 | 0.2" | Acme Class 2G | Rockwell B97 | Not Rated | 95066A175 | 000000 | ||
Hex Nuts—Left-Hand Thread
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Hex nuts fasten and position lead screw components.
Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
Thread Size | Thread Type | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Tensile Strength, psi | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Carbon Steel | ||||||||||||||
| 1 1/2"-5 | Acme | 1 1/2" | 2 3/8" | 1 | 1:1 | 0.2" | Acme Class 2G | SAE Grade 2 | Rockwell B85 | 64,000 | 91808A123 | 000000 | ||
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.
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.
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 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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. | Each | |||
673 Bronze | ||||||||||||||||
| 1 1/2"-5 | 2 19/64" | 2.125" | Acme | 1:1 | 1 | 0.2" | 1 31/32"-18 | 13/16" | Acme Class 2C | Brinell 70 | Not Rated | Not Rated | 95072A121 | 0000000 | ||
Externally Threaded Nuts—Left-Hand Thread
|
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.
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 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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. | Each | |||
673 Bronze | ||||||||||||||||
| 1 1/2"-5 | 2 19/64" | 2.125" | Acme | 1:1 | 1 | 0.2" | 1 31/32"-18 | 13/16" | Acme Class 2C | Brinell 70 | Not Rated | Not Rated | 95072A225 | 0000000 | ||
Flanges
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Flange Thread Size | Flange Dia. | Flange Thk. | Bolt Circle Dia. | Flange Hardness | Each | |||
|---|---|---|---|---|---|---|---|---|
1117 Carbon Steel | ||||||||
| 1 31/32"-18 | 4 13/64" | 53/64" | 3 7/16" | Brinell 156 | 95082A645 | 000000 | ||
Black-Oxide 1117 Carbon Steel | ||||||||
| 1 31/32"-18 | 4 13/64" | 53/64" | 3 7/16" | Brinell 135 | 1329K105 | 00000 | ||
303 Stainless Steel | ||||||||
| 1 31/32"-18 | 4 13/64" | 53/64" | 3 7/16" | Brinell 140 | 1329K15 | 000000 | ||
