| COUNTERBORE DIAMETER | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM NUT |
| COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| OVERALL HEIGHT | 0.301 INCHES MINIMUM AND 0.316 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 8740 OVERALL |
| NOMINAL THREAD SIZE | 0.164 INCHES |
| NUT COUNTERBORE DEPTH | 0.017 INCHES MINIMUM AND 0.023 INCHES MAXIMUM NUT |
| NUT STYLE | HEXAGON |
| WASHER OUTSIDE DIAMETER | 0.373 INCHES MAXIMUM |
| WASHER THICKNESS | 0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.221 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNC |
| THREAD QUANTITY PER INCH | 32 |