| DISTANCE FROM CENTERLINE TO FLAT | 0.259 INCHES MINIMUM AND 0.265 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| NUT HEIGHT | 0.402 INCHES MINIMUM AND 0.423 INCHES MAXIMUM |
| NUT DIAMETER | 0.515 INCHES MINIMUM AND 0.545 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5709 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| PILOT DIAMETER | 0.304 INCHES MINIMUM AND 0.308 INCHES MAXIMUM |
| PILOT LENGTH | 0.105 INCHES MINIMUM AND 0.111 INCHES MAXIMUM |
| PRECIOUS MATERIAL | SILVER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| THREAD CLASS | 3BG |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNJF |