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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.
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.
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 | 000000 |
| 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 | 000000 |
| 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 | 00000 |
| 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 | 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 | 00000 |
| 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 |
Zinc-Plated 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 | 00000 |
| 3/8"-10 | 23/64" | 11/16" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 3/8"-12 | 23/64" | 11/16" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 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 | 1:1 | 0.125" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 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 |
| 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 | 15/64" | 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 | 39/64" | 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 | 47/64" | 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 | 000000 |
| 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 1/2" | 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 | 15/64" | 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 | 39/64" | 1 1/16" | 1 | 1:1 | 0.167" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 5/8"-8 | 39/64" | 1 1/16" | 1 | 1:1 | 0.125" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 3/4"-6 | 47/64" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 3/4"-8 | 47/64" | 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 | 00000 |
| 1"-4 | 63/64" | 1 5/8" | 1 | 1:1 | 0.25" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 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 | 00000 |
| 1"-10 | 63/64" | 1 5/8" | 1 | 1:1 | 0.1" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 1 1/8"-5 | 1 7/64" | 1 13/16" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 1 1/4"-4 | 1 7/32" | 2" | 1 | 1:1 | 0.25" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 1 1/4"-5 | 1 7/32" | 2" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 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 15/32" | 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 | 2" | 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 | 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 | 1:1 | 0.125" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 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 | 15/64" | 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 | 39/64" | 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 | 47/64" | 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 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, pitch, and number of thread starts. 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.
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 | 7H | Grade 2 | Not Rated | 000000000 | 000000 |
| M16 | 4 | 16 | 27 | 1 | 1:1 | 4 | 7H | Grade 2 | Not Rated | 000000000 | 00000 |
| M20 | 4 | 20 | 31.75 | 1 | 1:1 | 4 | 7H | Grade 2 | Not Rated | 000000000 | 00000 |
| M26 | 5 | 25.4 | 41.3 | 1 | 1:1 | 5 | 7H | Grade 2 | Not Rated | 000000000 | 00000 |
| M40 | 7 | 39.9 | 60.33 | 1 | 1:1 | 7 | 7H | Grade 2 | Not Rated | 000000000 | 00000 |