| LOCKING FEATURE | FREE-RUNNING ALL METAL DESIGN |
| OVERALL HEIGHT | 0.350 INCHES MINIMUM AND 0.410 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.5000 INCHES |
| NUT STYLE | DOUBLE HEXAGON |
| WASHER OUTSIDE DIAMETER | 0.788 INCHES MINIMUM |
| WASHER THICKNESS | 0.085 INCHES MINIMUM |
| WIDTH ACROSS FLATS | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |