| COUNTERBORE DIAMETER | 0.140 INCHES MINIMUM AND 0.155 INCHES MAXIMUM NUT |
| COUNTERSINK ANGLE | 55.0 DEGREES MINIMUM AND 65.0 DEGREES MAXIMUM NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 303 OVERALL |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| NUT HEIGHT | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |
| NUT COUNTERBORE DEPTH | 0.014 INCHES MINIMUM AND 0.024 INCHES MAXIMUM NUT |
| NUT STYLE | CLINCH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| PILOT DIAMETER | 0.197 INCHES MINIMUM AND 0.201 INCHES MAXIMUM |
| PILOT LENGTH | 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 580-0025-00,COLLINS RADIO CO MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNC |
| THREAD QUANTITY PER INCH | 32 |