| COUNTERBORE DIAMETER | 0.342 INCHES MINIMUM AND 0.352 INCHES MAXIMUM NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5762 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| NUT COUNTERBORE DEPTH | 0.359 INCHES MINIMUM AND 0.369 INCHES MAXIMUM NUT |
| NUT HEIGHT | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| NUT DIAMETER | 0.622 INCHES MINIMUM AND 0.628 INCHES MAXIMUM |
| NUT STYLE | SPLINE |
| PILOT DIAMETER | 0.414 INCHES MINIMUM AND 0.417 INCHES MAXIMUM |
| PILOT LENGTH | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072, E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |