Selecting Compatible Lead Screws and Nuts
More
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, thread size, and number of thread starts.
Carbon steel components are easier to machine than alloy steel components.
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.
Hex head screws fasten heavy loads. They’re generally shorter than lead screws and can be tightened with a wrench. Length is measured from under the head.
Head | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Lg. | Wd. | Ht. | Thread Fit | Fastener Strength Grade/Class | Hardness | Tensile Strength, psi | Each | |
Carbon Steel | |||||||||||||
| 1/4"-16 | 3" | 1 | 1:1 | 0.063" | 2 1/2" to 3" | 7/16" | 5/32" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 000000 |
| 1/4"-16 | 4" | 1 | 1:1 | 0.063" | 3" to 4" | 7/16" | 5/32" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1/4"-16 | 6" | 1 | 1:1 | 0.063" | 4" to 6" | 7/16" | 5/32" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 3/8"-12 | 3" | 1 | 1:1 | 0.083" | 2 1/2" to 3" | 9/16" | 15/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 3/8"-12 | 4" | 1 | 1:1 | 0.083" | 3 1/2" to 4" | 9/16" | 15/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 3/8"-12 | 6" | 1 | 1:1 | 0.083" | 5 1/2" to 6" | 9/16" | 15/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1/2"-10 | 3" | 1 | 1:1 | 0.1" | 2 1/2" to 3" | 3/4" | 5/16" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1/2"-10 | 4" | 1 | 1:1 | 0.1" | 3 1/2" to 4" | 3/4" | 5/16" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1/2"-10 | 6" | 1 | 1:1 | 0.1" | 5 1/2" to 6" | 3/4" | 5/16" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 5/8"-8 | 3" | 1 | 1:1 | 0.125" | 2 1/2" to 3" | 15/16" | 25/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 5/8"-8 | 4" | 1 | 1:1 | 0.125" | 3 1/2" to 4" | 15/16" | 25/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 5/8"-8 | 6" | 1 | 1:1 | 0.125" | 5 1/2" to 6" | 15/16" | 25/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 3/4"-6 | 3" | 1 | 1:1 | 0.167" | 2 1/2" to 3" | 1 1/8" | 15/32" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 3/4"-6 | 4" | 1 | 1:1 | 0.167" | 3 1/2" to 4" | 1 1/8" | 15/32" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 3/4"-6 | 6" | 1 | 1:1 | 0.167" | 5 1/2" to 6" | 1 1/8" | 15/32" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 7/8"-6 | 3" | 1 | 1:1 | 0.167" | 2 1/2" to 3" | 1 5/16" | 35/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 7/8"-6 | 4" | 1 | 1:1 | 0.167" | 3 1/2" to 4" | 1 5/16" | 35/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 7/8"-6 | 6" | 1 | 1:1 | 0.167" | 5 1/2" to 6" | 1 5/16" | 35/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1"-5 | 3" | 1 | 1:1 | 0.2" | 2 1/2" to 3" | 1 1/2" | 39/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1"-5 | 4" | 1 | 1:1 | 0.2" | 3 1/2" to 4" | 1 1/2" | 39/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1"-5 | 6" | 1 | 1:1 | 0.2" | 5 1/2" to 6" | 1 1/2" | 39/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1 1/4"-5 | 3" | 1 | 1:1 | 0.2" | 2 1/2" to 3" | 1 7/8" | 25/32" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1 1/4"-5 | 4" | 1 | 1:1 | 0.2" | 3 1/2" to 4" | 1 7/8" | 25/32" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1 1/4"-5 | 6" | 1 | 1:1 | 0.2" | 5 1/2" to 6" | 1 7/8" | 25/32" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1 1/2"-4 | 3" | 1 | 1:1 | 0.25" | 2 1/2" to 3" | 2 1/4" | 15/16" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1 1/2"-4 | 4" | 1 | 1:1 | 0.25" | 3 1/2" to 4" | 2 1/4" | 15/16" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 1 1/2"-4 | 6" | 1 | 1:1 | 0.25" | 5 1/2" to 6" | 2 1/4" | 15/16" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |