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Low-Strength Steel Coupling Nuts
Also known as extension nuts, use these to connect and extend threaded rods. They're about half the strength of medium-strength steel coupling nuts for use in light duty fastening applications.
Black-oxide steel coupling nuts have a dark surface color and are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
Black-Oxide Steel | |||||
| 1/4"-20 | 5/8" | 1/2" | 000000000 | 00000 | 00000 |
| 5/16"-18 | 7/8" | 9/16" | 000000000 | 0000 | 0000 |
| 3/8"-16 | 1" | 11/16" | 000000000 | 0000 | 0000 |
| 7/16"-14 | 1 1/4" | 3/4" | 000000000 | 0000 | 0000 |
| 1/2"-13 | 1 1/4" | 7/8" | 000000000 | 0000 | 0000 |
| 5/8"-11 | 1 5/8" | 1 1/16" | 000000000 | 0000 | 0000 |
| 3/4"-10 | 1 7/8" | 1 1/4" | 000000000 | 0000 | 0000 |
| 7/8"-9 | 2 1/4" | 1 7/16" | 000000000 | 0000 | 0000 |
| 1"-8 | 2 1/2" | 1 5/8" | 000000000 | 00000 | 0000 |
Metric Low-Strength Steel Coupling Nuts
Often referred to as extension nuts, use these to connect and extend threaded rods. They're about half the strength of medium-strength steel coupling nuts for use in light duty fastening applications.
Black-oxide steel coupling nuts have a dark surface color and are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.