| HARDNESS RATING | 44.0 ROCKWELL C NOMINAL |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| OVERALL HEIGHT | 0.250 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5735 ASSN STD 1ST MATERIAL RESPONSE OR AMS5737 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| NUT STYLE | DOUBLE HEXAGON |
| PRECIOUS MATERIAL | SILVER |
| WASHER OUTSIDE DIAMETER | 0.312 INCHES MAXIMUM |
| WASHER THICKNESS | 0.023 INCHES MINIMUM AND 0.043 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.212 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| TEMP RATING | 1200.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 20 |