| COUNTERBORE DIAMETER | 0.169 INCHES MINIMUM AND 0.174 INCHES MAXIMUM NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 302 OVERALL |
| NOMINAL THREAD SIZE | 0.164 INCHES |
| NUT COUNTERBORE DEPTH | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM NUT |
| NUT DIAMETER | 0.375 INCHES NOMINAL |
| NUT HEIGHT | 0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM |
| NUT STYLE | SPLINE |
| PILOT LENGTH | 0.078 INCHES NOMINAL |
| PILOT DIAMETER | 0.278 INCHES MINIMUM AND 0.282 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 171,FIN. 5.4.1 MIL STD 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 |