| COUNTERBORE DIAMETER | 0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM SECOND END |
| COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL SECOND END |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR ASTM A276 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A582 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 302 OR STEEL COMP 303 OVERALL |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| NUT COUNTERBORE DEPTH | 0.078 INCHES MINIMUM AND 0.085 INCHES MAXIMUM FIRST END |
| NUT COUNTERBORE DEPTH | 0.271 INCHES MINIMUM AND 0.286 INCHES MAXIMUM SECOND END |
| NUT DIAMETER | 0.281 INCHES NOMINAL |
| NUT HEIGHT | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| PILOT DIAMETER | 0.247 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| PILOT LENGTH | 0.088 INCHES MINIMUM AND 0.098 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 |