| COUNTERBORE DIAMETER | 2.200 INCHES MINIMUM AND 2.220 INCHES MAXIMUM WASHER |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| OVERALL HEIGHT | 0.690 INCHES MINIMUM AND 0.710 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 4340 OVERALL |
| NOMINAL THREAD SIZE | 1.125 INCHES |
| NUT COUNTERBORE DEPTH | 0.162 INCHES MINIMUM AND 0.172 INCHES MAXIMUM WASHER |
| NUT STYLE | HEXAGON |
| WASHER OUTSIDE DIAMETER | 2.763 INCHES MINIMUM AND 2.768 INCHES MAXIMUM |
| WASHER THICKNESS | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 1.615 INCHES MINIMUM AND 1.627 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 12 |
| THREAD SERIES | UNF |