| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| NUT STYLE | WING |
| WING SPREAD WIDTH | 1.120 INCHES MINIMUM AND |
| 1.250 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.530 INCHES MINIMUM AND |
| 0.660 INCHES MAXIMUM |
| BODY DIAMETER | 0.510 INCHES MINIMUM AND |
| 0.580 INCHES MAXIMUM |
| HOLE CONFIGURATION STYLE | CONFIGURATION K |
| HOLE TYPE AND QUANTITY | 1 DRILLED |
| DRILLED HOLE DIAMETER | 0.070 INCHES MINIMUM AND |
| 0.080 INCHES MAXIMUM |
| FABRICATION METHOD | FORGED |
| DEPARTURE FROM CITED DOCUMENT | AS DIFFERENTIATED BY SURFACE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS35425-41 |