| COUNTERSINK ANGLE | 120.0 DEGREES NOMINAL NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| OVERALL HEIGHT | 0.420 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD SIZE | 0.562 INCHES |
| NUT STYLE | HEXAGON |
| SPECIFICATION/STANDARD DATA | 80205-NAS1291 GOVERNMENT STANDARD |
| WASHER OUTSIDE DIAMETER | 0.912 INCHES MAXIMUM |
| WASHER THICKNESS | 0.045 INCHES MINIMUM |
| WIDTH ACROSS FLATS | 0.680 INCHES MINIMUM AND 0.692 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| TEMP RATING | 450.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 18 |