| COUNTERBORE DIAMETER | 0.860 INCHES MINIMUM AND 0.870 INCHES MAXIMUM NUT |
| COUNTERSINK ANGLE | 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| OVERALL HEIGHT | 0.650 INCHES MINIMUM AND 0.670 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5525 ASSN STD SINGLE MATERIAL RESPONSE WASHER |
| MATERIAL | IRON ALLOY 660 NUT |
| MATERIAL | IRON ALLOY 660 WASHER |
| NOMINAL THREAD SIZE | 0.625 INCHES |
| NUT COUNTERBORE DEPTH | 0.087 INCHES MINIMUM AND 0.102 INCHES MAXIMUM NUT |
| NUT STYLE | FLAT WITH TURNED UP EDGE |
| SPECIAL FEATURES | LUBRICATION ON THREADS AND BEARING SURFACE OF THE NUT ONLY, HEX WRENCHING ELEMENT |
| WASHER OUTSIDE DIAMETER | 1.310 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| TEMP RATING | -452.0 FAHRENHEIT MINIMUM AND 800.0 FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNJF |
| THREAD QUANTITY PER INCH | 18 |