| COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL NUT |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| OVERALL HEIGHT | 0.294 INCHES MINIMUM AND 0.329 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5637 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 302 OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT STYLE | DOUBLE HEXAGON |
| PRECIOUS MATERIAL AND LOCATION | OVERALL SILVER |
| PRECIOUS MATERIAL | SILVER |
| WASHER OUTSIDE DIAMETER | 0.438 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
| WASHER THICKNESS | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM |
| 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 |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNF |