| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| PILOT DIAMETER | 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT HEIGHT | 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| WIDTH ACROSS FLATS | 0.492 INCHES MINIMUM AND 0.501 INCHES MAXIMUM |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| TEMP RATING | 450.0 DEG FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNJF |