Selecting Compatible Lead Screws and Nuts
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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.
Cast iron components have good machinability and high strength.
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—Right-Hand Threaded
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 | Each | |
Cast Iron | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 5/8"-8 | 1 1/4" | 1 55/64" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B96 | 000000000 | 000000 |
Round Nuts—Left-Hand Threaded
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 | Each | |
Cast Iron | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 5/8"-8 | 1 1/4" | 1 55/64" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B96 | 000000000 | 000000 |