| BEARING SURFACE TYPE | FLAT |
| INSIDE WIDTH ACROSS FLATS | 0.349 INCHES MINIMUM AND 0.357 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT HEIGHT | 0.221 INCHES MAXIMUM |
| NUT STYLE | INTERNAL OR EXTERNAL WRENCHING HEXAGON |
| PRECIOUS MATERIAL AND LOCATION | ALL SURFACES SILVER |
| PRECIOUS MATERIAL | SILVER |
| SPECIFICATION/STANDARD DATA | 81205-BACN10JC MANUFACTURERS STANDARD |
| WIDTH ACROSS FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| TEMP RATING | 450.0 FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |