| COUNTERBORE DIAMETER | 16.54 MILLIMETERS MINIMUM BASE AND 17.04 MILLIMETERS MAXIMUM BASE |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| MATERIAL DOCUMENT AND CLASSIFICATION | F3025-AIR9160 MIL STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 35CD4 OVERALL |
| NOMINAL THREAD SIZE | 0.6250 INCHES |
| NUT STYLE | DOUBLE HEXAGON |
| OVERALL HEIGHT | 16.82 MILLIMETERS MINIMUM AND 17.20 MILLIMETERS MAXIMUM |
| WASHER OUTSIDE DIAMETER | 26.72 MILLIMETERS MINIMUM AND 26.97 MILLIMETERS MAXIMUM |
| WASHER THICKNESS | 3.63 MILLIMETERS MINIMUM AND 4.13 MILLIMETERS MAXIMUM |
| WIDTH ACROSS FLATS | 18.89 MILLIMETERS MINIMUM AND 19.61 MILLIMETERS MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | I9005 EN2133 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL AND DISULFIDE MOLYBDENUM OVERALL |
| TEMP RATING | 235.0 DEG CELSIUS MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES | UNJF |