| COUNTERBORE DIAMETER | 0.149 INCHES MINIMUM AND 0.156 INCHES MAXIMUM NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 303 OVERALL |
| PILOT DIAMETER | 0.185 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| PILOT LENGTH | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| NUT DIAMETER | 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM |
| NUT COUNTERBORE DEPTH | 0.209 INCHES MINIMUM AND 0.224 INCHES MAXIMUM NUT |
| NUT HEIGHT | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072 FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |