| MATERIAL | STEEL COMP 1212 OVERALL |
| PILOT DIAMETER | 0.355 INCHES MINIMUM AND 0.359 INCHES MAXIMUM |
| PILOT LENGTH | 0.057 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT DIAMETER | 0.468 INCHES NOMINAL |
| NUT HEIGHT | 0.289 INCHES MINIMUM AND 0.305 INCHES MAXIMUM |
| NUT STYLE | SPLINE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| FEATURES PROVIDED | CASEHARDENED |