| BEARING SURFACE TYPE | ANY ACCEPTABLE |
| HARDNESS RATING | 37.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL | STEEL COMP 8740 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT HEIGHT | 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| NUT STYLE | DOUBLE HEXAGON |
| SPECIFICATION/STANDARD DATA | 81205-BACN10GY MANUFACTURERS STANDARD |
| WIDTH ACROSS FLATS | 0.306 INCHES MINIMUM AND 0.315 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| TEMP RATING | 450.0 DEG FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNJF |