| COUNTERBORE DIAMETER | 0.317 INCHES MINIMUM AND 0.322 INCHES MAXIMUM FIRST END |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | 850T19 FSCM 07482 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD SIZE | 0.3125 INCHES |
| NUT COUNTERBORE DEPTH | 0.106 INCHES MINIMUM AND 0.112 INCHES MAXIMUM FIRST END |
| NUT DIAMETER | 0.461 INCHES MINIMUM AND 0.471 INCHES MAXIMUM |
| NUT HEIGHT | 0.564 INCHES MINIMUM AND 0.585 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| PILOT DIAMETER | 0.360 INCHES MINIMUM AND 0.364 INCHES MAXIMUM |
| PILOT LENGTH | 0.106 INCHES MINIMUM AND 0.112 INCHES MAXIMUM |
| SPECIAL FEATURES | PROJECTIONS ON OD OF NUT |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNF |