Selecting Compatible Lead Screws and Nuts
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Metric Fast-Travel Ultra-Precision Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. To ensure compatibility, select components that have the same thread size, thread pitch, and number of thread starts. 303 and 304 stainless steel lead screws have good 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 | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
303 Stainless Steel | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
M2 | 0.5 | 50 | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 000000000 | 000000 |
M2 | 0.5 | 100 | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 000000000 | 00000 |
M4 | 1.25 | 75 | 8 | Metric Rounded Trapezoidal | 8:1 | 10 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 000000000 | 00000 |
M4 | 1.25 | 150 | 8 | Metric Rounded Trapezoidal | 8:1 | 10 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 000000000 | 00000 |
Metric Ultra-Precision Lead Screws and Nuts

Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. 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, select components that have the same thread size, thread type, thread size, thread pitch, and number of thread starts. 303 stainless steel lead screws have good 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 | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
303 Stainless Steel | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
M2 | 0.5 | 50 | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 0000000 | 000000 |
M2 | 0.5 | 100 | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 0000000 | 00000 |
M4 | 0.3 | 75 | 1 | Metric Rounded Trapezoidal | 1:1 | 0.3 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 0000000 | 00000 |
M4 | 0.3 | 150 | 1 | Metric Rounded Trapezoidal | 1:1 | 0.3 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 0000000 | 00000 |
Ultra-Precision Lead Screws and Nuts

Operating with less backlash (play) than Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. 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. All components are corrosion resistant for use in harsh environments. To ensure compatibility, select components that have the same thread type, thread size, and number of thread starts.
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 | Thread Type | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
303 Stainless Steel | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
1/8"-20.8 | 6" | 1 | Rounded Acme | 1:1 | 0.048" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/8"-20.8 | 1 ft. | 1 | Rounded Acme | 1:1 | 0.048" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
1/8"-41.7 | 6" | 1 | Rounded Acme | 1:1 | 0.024" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
1/8"-41.7 | 1 ft. | 1 | Rounded Acme | 1:1 | 0.024" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
9/64"-20.8 | 1 ft. | 1 | Rounded Acme | 1:1 | 0.048" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
9/64"-20.8 | 18" | 1 | Rounded Acme | 1:1 | 0.048" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 00000 |
9/64"-41.7 | 6" | 1 | Rounded Acme | 1:1 | 0.024" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
9/64"-41.7 | 18" | 1 | Rounded Acme | 1:1 | 0.024" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 00000 |
7/32"-20.8 | 9" | 1 | Rounded Acme | 1:1 | 0.048" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
7/32"-20.8 | 18" | 1 | Rounded Acme | 1:1 | 0.048" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 00000 |
1/4"-20 | 1 ft. | 1 | Rounded Acme | 1:1 | 0.05" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
1/4"-20 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.05" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/4"-20 | 6 ft. | 1 | Rounded Acme | 1:1 | 0.05" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/4"-40 | 1 ft. | 1 | Rounded Acme | 1:1 | 0.025" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
1/4"-40 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.025" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-10 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-10 | 6 ft. | 1 | Rounded Acme | 1:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-20 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.05" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-20 | 6 ft. | 1 | Rounded Acme | 1:1 | 0.05" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-40 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.025" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-40 | 6 ft. | 1 | Rounded Acme | 1:1 | 0.025" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-8 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.125" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-8 | 6 ft. | 1 | Rounded Acme | 1:1 | 0.125" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-10 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-10 | 6 ft. | 1 | Rounded Acme | 1:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
1/2"-20 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.05" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-20 | 6 ft. | 1 | Rounded Acme | 1:1 | 0.05" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
5/8"-10 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
5/8"-10 | 6 ft. | 1 | Rounded Acme | 1:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/4"-10 | 3 ft. | 1 | Rounded Acme | 1:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/4"-10 | 6 ft. | 1 | Rounded Acme | 1:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
Fast-Travel Ultra-Precision Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. All components are corrosion resistant for use in harsh environments. To ensure compatibility, select components that have the same thread type, thread size, and number of thread starts.
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 | Thread Type | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
303 Stainless Steel | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
9/64"-20.8 | 18" | 2 | Rounded Acme | 2:1 | 0.096" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
5/32"-21.3 | 18" | 2 | Acme | 2:1 | 0.094" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 00000 |
3/16"-42.7 | 18" | 16 | Rounded Acme | 16:1 | 0.375" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 00000 |
7/32"-20.8 | 9" | 4 | Rounded Acme | 4:1 | 0.192" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
7/32"-20.8 | 18" | 4 | Rounded Acme | 4:1 | 0.192" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 00000 |
1/4"-8 | 3ft. | 8 | Rounded Acme | 8:1 | 1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/4"-8 | 6ft. | 8 | Rounded Acme | 8:1 | 1" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
1/4"-16 | 3ft. | 4 | Rounded Acme | 4:1 | 0.25" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/4"-16 | 6ft. | 4 | Rounded Acme | 4:1 | 0.25" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
1/4"-20 | 3ft. | 2 | Rounded Acme | 2:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 00000 |
1/4"-20 | 6ft. | 2 | Rounded Acme | 2:1 | 0.1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-5 | 3ft. | 5 | Rounded Acme | 5:1 | 1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-5 | 6ft. | 5 | Rounded Acme | 5:1 | 1" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
3/8"-8 | 3ft. | 2 | Rounded Acme | 2:1 | 0.25" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-8 | 3ft. | 4 | Rounded Acme | 4:1 | 0.5" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-8 | 6ft. | 4 | Rounded Acme | 4:1 | 0.5" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
3/8"-10 | 3ft. | 2 | Rounded Acme | 2:1 | 0.2" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/8"-10 | 6ft. | 2 | Rounded Acme | 2:1 | 0.2" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
3/8"-12 | 6ft. | 3 | Rounded Acme | 3:1 | 0.25" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-8 | 3ft. | 2 | Rounded Acme | 2:1 | 0.25" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-8 | 3ft. | 4 | Rounded Acme | 4:1 | 0.5" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-8 | 3ft. | 8 | Rounded Acme | 8:1 | 1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-8 | 6ft. | 2 | Rounded Acme | 2:1 | 0.25" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-8 | 6ft. | 4 | Rounded Acme | 4:1 | 0.5" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
1/2"-8 | 6ft. | 8 | Rounded Acme | 8:1 | 1" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
1/2"-10 | 3ft. | 2 | Rounded Acme | 2:1 | 0.2" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
1/2"-10 | 6ft. | 2 | Rounded Acme | 2:1 | 0.2" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
5/8"-6 | 3ft. | 12 | Rounded Acme | 12:1 | 2" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
5/8"-6 | 6ft. | 12 | Rounded Acme | 12:1 | 2" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
5/8"-8 | 3ft. | 4 | Rounded Acme | 4:1 | 0.5" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
5/8"-8 | 6ft. | 4 | Rounded Acme | 4:1 | 0.5" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/4"-8 | 3ft. | 2 | Rounded Acme | 2:1 | 0.25" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/4"-8 | 3ft. | 8 | Rounded Acme | 8:1 | 1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 000000 |
3/4"-8 | 6ft. | 2 | Rounded Acme | 2:1 | 0.25" | ±0.0006" per in. | Brinell 160 | 90,000 | 0000000 | 000000 |
3/4"-8 | 6ft. | 8 | Rounded Acme | 8:1 | 1" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 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, size, and number of thread starts as your lead screw.
303 stainless steel collars have good 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 | ||||||
---|---|---|---|---|---|---|
303 Stainless Steel | ||||||
1/4"-16 | 5/8" | 9/32" | 1 | Brinell 228 | 0000000 | 000000 |
3/8"-12 | 7/8" | 11/32" | 1 | Brinell 228 | 0000000 | 00000 |
3/8"-16 | 7/8" | 11/32" | 1 | Brinell 228 | 0000000 | 00000 |
1/2"-10 | 1 1/8" | 7/16" | 1 | Brinell 228 | 0000000 | 00000 |
5/8"-8 | 1 5/16" | 7/16" | 1 | Brinell 228 | 0000000 | 00000 |
5/8"-10 | 1 5/16" | 7/16" | 1 | Brinell 228 | 0000000 | 00000 |
3/4"-6 | 1 1/2" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
3/4"-10 | 1 1/2" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
1"-4 | 1 3/4" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
1"-5 | 1 3/4" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
1"-10 | 1 3/4" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
Two-Piece Clamping Acme Lead Screw Collars

Mount these two-piece collars anywhere on an Acme lead screw without removing components. Use them to separate and position components or 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, size, and number of thread starts as your lead screw.
303 stainless steel collars have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.