| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| THREAD DIRECTION | RIGHT-HAND |
| NUT STYLE | PLATE |
| MATERIAL | IRON ALLOY 660 OVERALL |
| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3B |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 49.0 ROCKWELL C MAXIMUM |
| NUT LENGTH | 0.993 INCHES MAXIMUM |
| NUT HEIGHT | 0.281 INCHES MAXIMUM |
| PLATE THICKNESS | 0.055 INCHES MAXIMUM |
| PLATE WIDTH | 0.375 INCHES MINIMUM AND |
| 0.414 INCHES MAXIMUM |
| NUT COUNTERBORE DEPTH | 0.062 INCHES MINIMUM NUT |
| COUNTERBORE DIAMETER | 0.254 INCHES MINIMUM NUT |
| NUT MOUNTING PROVISION | WELDING PROJECTIONS |
| MOUNTING PROVISION LOCATION | OPPOSITE NUT PROJECTION SIDE |
| WELDING PROJECTION QUANTITY | 2 |
| TEMP RATING | 800.0 DEG FAHRENHEIT MAXIMUM |
| PRECIOUS MATERIAL | SILVER |
| PRECIOUS MATERIAL AND LOCATION | ALL SURACES SILVER |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS21052-4W |