| COUNTERBORE DIAMETER | 0.534 INCHES MINIMUM AND 0.538 INCHES MAXIMUM FIRST END |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| OVERALL HEIGHT | 0.615 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5697 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5639 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5686 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 304 OR STEEL COMP 305 OVERALL |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| NUT COUNTERBORE DEPTH | 0.132 INCHES MINIMUM AND 0.142 INCHES MAXIMUM FIRST END |
| NUT STYLE | HEXAGON |
| WASHER OUTSIDE DIAMETER | 0.805 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 20 |