| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MS6280 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND |
| 43.0 ROCKWELL C MAXIMUM |
| NUT STYLE | DOUBLE HEXAGON |
| WASHER OUTSIDE DIAMETER | 0.813 INCHES MINIMUM AND |
| 0.833 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.539 INCHES MINIMUM AND |
| 0.559 INCHES MAXIMUM |
| WASHER THICKNESS | 0.064 INCHES MINIMUM AND |
| 0.084 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.616 INCHES MINIMUM AND |
| 0.627 INCHES MAXIMUM |
| LOCKING FEATURE | FREE-RUNNING ALL METAL DESIGN |
| TEMP RATING | 450.0 DEG FAHRENHEIT NOMINAL |
| SPECIAL FEATURES | USED ON (25500) 5002371-4 WHEEL ASSY'S OF A-10 MLG ACFT |
| SPECIAL TEST FEATURES | MUST BE QUALIFIED IN ACCORDANCE WITH APPLICABLE OEM WHEEL QUALIFICATION SPECIFICATION |
| CRITICALITY CODE JUSTIFICATION | SPCL |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 98747 |
| MFR SOURCE CONTROLLING REFERENCE | 9235390-03 |