| COUNTERSINK ANGLE | 120.0 DEGREES NOMINAL NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| OVERALL HEIGHT | 0.420 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD SIZE | 0.562 INCHES |
| NUT STYLE | HEXAGON |
| PRECIOUS MATERIAL AND LOCATION | EXTERNAL SURFACE SILVER |
| 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 | AAM 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| TEMP RATING | 800.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES | UNF |