| COUNTERBORE DIAMETER | 0.149 INCHES MINIMUM AND 0.156 INCHES MAXIMUM NUT |
| COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM 582 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 303 OVERALL |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| NUT COUNTERBORE DEPTH | 0.026 INCHES MINIMUM AND 0.031 INCHES MAXIMUM NUT |
| NUT DIAMETER | 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM |
| NUT HEIGHT | 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| PILOT LENGTH | 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM |
| PILOT DIAMETER | 0.185 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 32 |