| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3BG |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND |
| 44.0 ROCKWELL C MAXIMUM |
| NUT STYLE | CLINCH |
| DISTANCE FROM CENTERLINE TO FLAT | 0.250 INCHES NOMINAL |
| PILOT DIAMETER | 0.335 INCHES NOMINAL |
| PILOT LENGTH | 0.165 INCHES NOMINAL |
| NUT DIAMETER | 0.425 INCHES NOMINAL |
| NUT HEIGHT | 0.382 INCHES NOMINAL |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| PRECIOUS MATERIAL | SILVER |
| PRECIOUS MATERIAL AND LOCATION | EXTERNAL SURFACE SILVER |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 77445 |
| MFR SOURCE CONTROLLING REFERENCE | 638674 |