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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 and size.
Carbon steel components are easier to machine than alloy steel components. Zinc-plated carbon steel components have mild corrosion resistance. 360 brass components have excellent machinability and good corrosion resistance. 18-8 stainless steel components have good 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.
Coupling Nuts—Right-Hand Threaded
Coupling nuts connect two lead screws.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
Carbon Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 1 7/8" | 1/2" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B75 | 000000000 | 000000 |
| 1/2"-10 | 1 1/4" | 5/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 5/8"-8 | 2 1/8" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 3/4"-5 | 2 1/4" | 1" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 3/4"-6 | 2 1/4" | 1" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 7/8"-6 | 2 1/2" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1"-5 | 2 3/4" | 1 3/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1"-6 | 2 3/4" | 1 3/8" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1"-10 | 2 3/4" | 1 3/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 1/8"-5 | 3" | 1 1/2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 1/4"-4 | 3" | 1 5/8" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 1/4"-5 | 3" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 3/8"-4 | 3 1/4" | 1 7/8" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 1/2"-4 | 3 1/2" | 2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 2"-4 | 4" | 3" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | 000000000 | 000000 |
| 2 1/2"-4 | 5" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | 000000000 | 000000 |
18-8 Stainless Steel | |||||||||
| 1/2"-10 | 1 1/4" | 5/8" | 1 | 1:1 | 0.1" | Class 2G | Not Rated | 000000000 | 00000 |
| 5/8"-8 | 2 1/8" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Not Rated | 000000000 | 00000 |
| 3/4"-5 | 2 1/4" | 1" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 00000 |
| 3/4"-6 | 2 1/4" | 1" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | 000000000 | 00000 |
| 7/8"-6 | 2 1/2" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | 000000000 | 00000 |
| 1"-5 | 2 3/4" | 1 3/8" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 00000 |
| 1"-6 | 2 3/4" | 1 3/8" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | 000000000 | 00000 |
| 1"-10 | 2 3/4" | 1 3/8" | 1 | 1:1 | 0.1" | Class 2G | Not Rated | 000000000 | 00000 |
| 1 1/8"-5 | 3" | 1 1/2" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 00000 |
| 1 1/4"-4 | 3" | 1 5/8" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/4"-5 | 3" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | 000000000 | 000000 |
| 1 1/2"-4 | 3 1/2" | 2" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 000000 |
| 2"-4 | 4" | 3" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | 000000000 | 000000 |
Coupling Nuts—Left-Hand Threaded
Coupling nuts connect two lead screws.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
Carbon Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/2"-10 | 1 1/4" | 5/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | 000000000 | 000000 |
| 5/8"-8 | 2 1/8" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 3/4"-5 | 2 1/4" | 1" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 3/4"-6 | 2 1/4" | 1" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 7/8"-6 | 2 1/2" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1"-5 | 2 3/4" | 1 3/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1"-6 | 2 3/4" | 1 3/8" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1"-10 | 2 3/4" | 1 3/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 1/8"-5 | 3" | 1 1/2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 1/4"-4 | 3" | 1 5/8" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 1/4"-5 | 3" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 3/8"-4 | 3 1/4" | 1 7/8" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 1 1/2"-4 | 3 1/2" | 2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | 000000000 | 00000 |
| 2"-4 | 4" | 3" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | 000000000 | 000000 |
Hex Nuts—Right-Hand Threaded
Hex nuts fasten and position lead screw components.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
Carbon Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/4"-16 | 15/64" | 1/2" | 1 | 1:1 | 0.063" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 3/8"-8 | 23/64" | 11/16" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 3/8"-10 | 23/64" | 11/16" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 3/8"-12 | 23/64" | 11/16" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1/2"-10 | 31/64" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 5/8"-6 | 39/64" | 1 1/16" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 5/8"-8 | 39/64" | 1 1/16" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 3/4"-6 | 47/64" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 3/4"-8 | 47/64" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 7/8"-6 | 55/64" | 1 7/16" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1"-4 | 63/64" | 1 5/8" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1"-5 | 63/64" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1"-6 | 63/64" | 1 5/8" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1"-8 | 63/64" | 1 5/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1"-10 | 63/64" | 1 5/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1 1/8"-5 | 1 7/64" | 1 13/16" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1 1/4"-4 | 1 1/4" | 2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1 1/4"-5 | 1 7/32" | 2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1 3/8"-4 | 1 11/32" | 2 3/16" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1 1/2"-4 | 1 15/32" | 2 3/8" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1 1/2"-5 | 1 15/32" | 2 3/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 2"-4 | 1 31/32" | 3" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 2 1/4"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 2 1/2"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
Zinc-Plated Carbon Steel | ||||||||||
| 1/4"-16 | 15/64" | 1/2" | 1 | 1:1 | 0.063" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 3/8"-8 | 23/64" | 11/16" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 3/8"-10 | 23/64" | 11/16" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 3/8"-12 | 23/64" | 11/16" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 5/8"-6 | 39/64" | 1 1/16" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 5/8"-8 | 5/8" | 1 1/16" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 3/4"-6 | 3/4" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 3/4"-8 | 47/64" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 7/8"-6 | 55/64" | 1 7/16" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1"-4 | 63/64" | 1 5/8" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1"-5 | 1" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1"-6 | 63/64" | 1 5/8" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1"-8 | 63/64" | 1 5/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1"-10 | 63/64" | 1 5/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1 1/8"-5 | 1 7/64" | 1 13/16" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1 1/4"-4 | 1 7/32" | 2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1 1/4"-5 | 1 1/4" | 2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1 3/8"-4 | 1 11/32" | 2 3/16" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1 1/2"-4 | 1 15/32" | 2 3/8" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1 1/2"-5 | 1 15/32" | 2 3/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 2"-4 | 1 31/32" | 3" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 000000 |
| 2 1/4"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 000000 |
| 2 1/2"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 000000 |
360 Brass | ||||||||||
| 3/8"-12 | 3/8" | 3/4" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 0000 |
| 1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 0000 |
| 5/8"-8 | 5/8" | 1 1/16" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 0000 |
| 3/4"-5 | 3/4" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 3/4"-6 | 3/4" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 7/8"-6 | 7/8" | 1 1/2" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1"-5 | 1" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1"-6 | 1" | 1 5/8" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1"-10 | 1" | 1 5/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1 1/8"-5 | 1 1/8" | 1 3/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1 1/4"-5 | 1 1/4" | 2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1 1/2"-4 | 1 1/2" | 2 1/4" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 2"-4 | 2" | 3" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 2 1/2"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 000000 |
18-8 Stainless Steel | ||||||||||
| 1/4"-16 | 13/64" | 1/2" | 1 | 1:1 | 0.063" | Class 2G | Rockwell B97 | __ | 000000000 | 0000 |
| 3/8"-8 | 23/64" | 11/16" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B97 | __ | 000000000 | 00000 |
| 3/8"-10 | 23/64" | 11/16" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B97 | __ | 000000000 | 00000 |
| 3/8"-12 | 23/64" | 11/16" | 1 | 1:1 | 0.083" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B97 | __ | 000000000 | 00000 |
| 1/2"-10 | 31/64" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 5/8"-6 | 19/32" | 1 1/16" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B97 | __ | 000000000 | 00000 |
| 5/8"-8 | 39/64" | 1 1/16" | 1 | 1:1 | 0.125" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 3/4"-6 | 47/64" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 3/4"-8 | 23/32" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B97 | __ | 000000000 | 00000 |
| 7/8"-6 | 55/64" | 1 1/2" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 1"-4 | 63/64" | 1 5/8" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B97 | __ | 000000000 | 00000 |
| 1"-5 | 63/64" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 1"-6 | 63/64" | 1 5/8" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 1"-8 | 63/64" | 1 5/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B97 | __ | 000000000 | 00000 |
| 1"-10 | 63/64" | 1 5/8" | 1 | 1:1 | 0.1" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 1 1/8"-5 | 1 7/64" | 1 3/4" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 1 1/4"-4 | 1 1/4" | 2" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 1 1/4"-5 | 1 7/32" | 2" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 1 1/2"-4 | 1 15/32" | 2 1/4" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 1 1/2"-5 | 1 1/2" | 2 1/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B97 | __ | 000000000 | 000000 |
| 2"-4 | 1 31/32" | 3" | 1 | 1:1 | 0.25" | Class 2G | Not Rated | __ | 000000000 | 000000 |
| 2 1/4"-4 | 2 31/64" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B97 | __ | 000000000 | 000000 |
| 2 1/2"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B97 | __ | 000000000 | 000000 |
Hex Nuts—Left-Hand Threaded
Hex nuts fasten and position lead screw components.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Specifications Met | Each | |
Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4"-16 | 13/64" | 1/2" | 1 | 1:1 | 0.063" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 3/8"-8 | 23/64" | 11/16" | 1 | 1:1 | 0.125" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 3/8"-10 | 23/64" | 11/16" | 1 | 1:1 | 0.1" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 3/8"-12 | 23/64" | 11/16" | 1 | 1:1 | 0.083" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1/2"-10 | 31/64" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 5/8"-6 | 19/32" | 1 1/16" | 1 | 1:1 | 0.167" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 5/8"-8 | 19/32" | 1 1/16" | 1 | 1:1 | 0.125" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 3/4"-5 | 23/32" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 3/4"-6 | 23/32" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 3/4"-8 | 23/32" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 7/8"-6 | 55/64" | 1 7/16" | 1 | 1:1 | 0.167" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1"-4 | 63/64" | 1 5/8" | 1 | 1:1 | 0.25" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1"-5 | 63/64" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1"-6 | 63/64" | 1 5/8" | 1 | 1:1 | 0.167" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1"-8 | 63/64" | 1 5/8" | 1 | 1:1 | 0.125" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1"-10 | 63/64" | 1 5/8" | 1 | 1:1 | 0.1" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1 1/8"-5 | 1 7/64" | 1 13/16" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1 1/4"-4 | 1 3/16" | 2" | 1 | 1:1 | 0.25" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1 1/4"-5 | 1 3/16" | 2" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 1 3/8"-4 | 1 11/32" | 2 3/16" | 1 | 1:1 | 0.25" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 1 1/2"-4 | 1 1/2" | 2 3/8" | 1 | 1:1 | 0.25" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 1 1/2"-5 | 1 1/2" | 2 3/8" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 2"-4 | 1 31/32" | 3" | 1 | 1:1 | 0.25" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
Zinc-Plated Carbon Steel | |||||||||||
| 1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | __ | Rockwell B75 | __ | 000000000 | 00000 |
| 5/8"-8 | 5/8" | 1 1/16" | 1 | 1:1 | 0.125" | Class 2G | __ | Rockwell B75 | __ | 000000000 | 00000 |
| 3/4"-6 | 3/4" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | __ | Rockwell B75 | __ | 000000000 | 00000 |
| 1"-5 | 1" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | __ | Rockwell B75 | __ | 000000000 | 00000 |
| 1 1/4"-5 | 1 1/4" | 2" | 1 | 1:1 | 0.2" | Class 2G | __ | Rockwell B75 | __ | 000000000 | 00000 |
360 Brass | |||||||||||
| 1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 0000 |
| 5/8"-8 | 5/8" | 1 1/16" | 1 | 1:1 | 0.125" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 0000 |
| 3/4"-5 | 3/4" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 3/4"-6 | 3/4" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 7/8"-6 | 7/8" | 1 1/2" | 1 | 1:1 | 0.167" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1"-5 | 1" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1"-6 | 1" | 1 5/8" | 1 | 1:1 | 0.167" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1"-10 | 1" | 1 5/8" | 1 | 1:1 | 0.1" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1 1/8"-5 | 1 1/8" | 1 3/4" | 1 | 1:1 | 0.2" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1 1/4"-5 | 1 1/4" | 2" | 1 | 1:1 | 0.2" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 1 1/2"-4 | 1 1/2" | 2 1/4" | 1 | 1:1 | 0.25" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 2"-4 | 2" | 3" | 1 | 1:1 | 0.25" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 000000 |
18-8 Stainless Steel | |||||||||||
| 1/4"-16 | 13/64" | 1/2" | 1 | 1:1 | 0.063" | Class 2G | __ | Rockwell B97 | __ | 000000000 | 00000 |
| 3/8"-8 | 23/64" | 11/16" | 1 | 1:1 | 0.125" | Class 2G | __ | Rockwell B97 | __ | 000000000 | 00000 |
| 3/8"-10 | 23/64" | 11/16" | 1 | 1:1 | 0.1" | Class 2G | __ | Rockwell B97 | __ | 000000000 | 00000 |
| 3/8"-12 | 23/64" | 11/16" | 1 | 1:1 | 0.083" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
| 1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | __ | Rockwell B97 | __ | 000000000 | 00000 |
| 1/2"-10 | 31/64" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
| 5/8"-6 | 19/32" | 1 1/16" | 1 | 1:1 | 0.167" | Class 2G | __ | Rockwell B97 | __ | 000000000 | 00000 |
| 5/8"-8 | 39/64" | 1 1/16" | 1 | 1:1 | 0.125" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
| 3/4"-6 | 47/64" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
| 3/4"-8 | 23/32" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | __ | Rockwell B97 | __ | 000000000 | 00000 |
| 7/8"-6 | 55/64" | 1 1/2" | 1 | 1:1 | 0.167" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
| 1"-4 | 63/64" | 1 5/8" | 1 | 1:1 | 0.25" | Class 2G | __ | Rockwell B97 | __ | 000000000 | 00000 |
| 1"-5 | 63/64" | 1 5/8" | 1 | 1:1 | 0.2" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
| 1"-6 | 63/64" | 1 5/8" | 1 | 1:1 | 0.167" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
Metric 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, size, and pitch. Class 7E and 7H components are compatible.
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.
Hex Nuts—Right-Hand Threaded
Hex nuts fasten and position lead screw components.
| Thread Size | Thread Pitch, mm | Ht., mm | Wd., mm | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Thread Fit | Fastener Strength Grade/Class | Hardness | Each | |
Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| M12 | 3 | 12 | 22.2 | 1 | 1:1 | 3 | Class 7H | Grade 2 | Not Rated | 000000000 | 000000 |
| M16 | 4 | 16 | 27 | 1 | 1:1 | 4 | Class 7H | Grade 2 | Not Rated | 000000000 | 00000 |
| M20 | 4 | 20 | 31.75 | 1 | 1:1 | 4 | Class 7H | Grade 2 | Not Rated | 000000000 | 00000 |
| M26 | 5 | 25.4 | 41.3 | 1 | 1:1 | 5 | Class 7H | Grade 2 | Not Rated | 000000000 | 00000 |
| M40 | 7 | 39.9 | 60.33 | 1 | 1:1 | 7 | Class 7H | Grade 2 | Not Rated | 000000000 | 00000 |
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 type, thread size, thread pitch, and number of thread starts.
Nuts are acetal plastic; they have good wear and 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.
Externally Threaded Nuts—Right-Hand Threaded
B
External Thread | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Hex Wd. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Size | Lg. | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | ||
Acetal Plastic | ||||||||||||||||
| B | M2 | 0.5 | 11/16" | 0.297" | 7/16" | 2 | Metric Rounded Acme | 2:1 | 1 | 3/8"-24 | 3/16" | 8,000 | 10 | -40° to 185° | 000000000 | 000000 |
| B | M4 | 1.25 | 11/16" | 0.297" | 7/16" | 8 | Metric Rounded Acme | 8:1 | 10 | 3/8"-24 | 3/16" | 8,000 | 25 | -40° to 185° | 000000000 | 00000 |
| B | M5 | 1.25 | 11/16" | 0.297" | 7/16" | 4 | Metric Rounded Acme | 4:1 | 5 | 3/8"-24 | 3/16" | 8,000 | 25 | -40° to 185° | 000000000 | 00000 |
| B | M8 | 2 | 1" | 0.548" | 11/16" | 2 | Metric Rounded Acme | 2:1 | 4 | 5/8"-18 | 1/4" | 8,000 | 75 | -40° to 185° | 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 type and thread size.
Nuts are acetal plastic; they have good wear and 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.
Externally Threaded Nuts—Right-Hand Threaded
A
External Thread | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Hex Wd. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Size | Lg. | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | ||
Acetal Plastic | ||||||||||||||||
| A | M2 | 0.5 | 11/16" | 0.297" | 7/16" | 1 | Metric Rounded Acme | 1:1 | 0.5 | 3/8"-24 | 3/16" | 8,000 | 10 | -40° to 185° | 0000000 | 000000 |
| A | M4 | 0.3 | 11/16" | 0.297" | 7/16" | 1 | Metric Rounded Acme | 1:1 | 0.3 | 3/8"-24 | 3/16" | 8,000 | 25 | -40° to 185° | 0000000 | 00000 |
| A | M8 | 1.5 | 1" | 0.548" | 11/16" | 1 | Metric Rounded Acme | 1:1 | 1.5 | 5/8"-18 | 1/4" | 8,000 | 75 | -40° to 185° | 0000000 | 00000 |