| BEARING SURFACE TYPE | CHAMFERED |
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6304 ASSN STD 1ST MATERIAL RESPONSE OVERALL OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL OR AMS 6280 ASSN STD 3RD MATERIAL RESPONSE OVERALL OR AMS 6487 ASSN STD 4TH MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 601 OVERALL OR STEEL COMP 8740 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| NUT HEIGHT | 0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM |
| NUT STYLE | DOUBLE HEXAGON |
| WIDTH ACROSS FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| TEMP RATING | 450.0 DEG FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNJF |