| BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED |
| COUNTERSINK ANGLE | 120.0 DEGREES NOMINAL NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| NUT HEIGHT | 0.375 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.562 INCHES |
| PRECIOUS MATERIAL AND LOCATION | EXTERNAL SURFACE SILVER |
| PRECIOUS MATERIAL | SILVER |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 18 |
| WIDTH ACROSS FLATS | 0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 80205-NAS1022 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| TEMP RATING | 800.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |