| HARDNESS RATING | 48.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| OVERALL HEIGHT | 15.0 MILLIMETERS MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6304 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6485 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP H11 OVERALL |
| NOMINAL THREAD SIZE | 12.0 MILLIMETERS |
| NUT STYLE | DOUBLE HEXAGON |
| WASHER OUTSIDE DIAMETER | 18.79 MILLIMETERS MINIMUM AND 19.00 MILLIMETERS MAXIMUM |
| WASHER THICKNESS | 2.6 MILLIMETERS MINIMUM AND 3.0 MILLIMETERS MAXIMUM |
| WIDTH ACROSS FLATS | 13.82 MILLIMETERS MINIMUM AND 14.00 MILLIMETERS MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| TEMP RATING | 235.0 CELSIUS MAXIMUM |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD PITCH IN MILLIMETERS | 1.25 |
| THREAD SERIES | ISO M |
| THREAD TOLERANCE CLASS | 6H INTERNAL |