Choose a Category
About Nuts, Materials, and Finishes
More
Extreme-Strength Steel Coupling Nuts
Also known as extension nuts, use these to connect and extend threaded rods. Made from Grade 2H steel, they're about 20% stronger than high-strength steel coupling nuts and comparable in strength to Grade 9 bolts.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
Steel—Grade 2H | |||||
| 1/4"-20 | 7/8" | 1/2" | 000000000 | 000000 | 000000 |
| 3/8"-16 | 1 3/4" | 11/16" | 000000000 | 00000 | 00000 |
| 1/2"-13 | 1 3/4" | 7/8" | 000000000 | 00000 | 00000 |
| 5/8"-11 | 2 1/8" | 1 1/16" | 000000000 | 00000 | 00000 |
| 3/4"-10 | 2 1/4" | 1 1/4" | 000000000 | 00000 | 00000 |
| 7/8"-9 | 2 1/2" | 1 1/2" | 000000000 | 00000 | 00000 |
| 1"-8 | 2 3/4" | 1 5/8" | 000000000 | 00000 | 00000 |
| 1 1/4"-7 | 3" | 2" | 000000000 | 00000 | 00000 |
| 1 1/2"-6 | 3 1/2" | 2 1/2" | 000000000 | 00000 | 00000 |