| COUNTERBORE DIAMETER | 4.940 INCHES NOMINAL BOSS |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4340 OVERALL |
| NOMINAL THREAD SIZE | 4.9062 INCHES |
| NUT DIAMETER | 5.870 INCHES MINIMUM AND 5.875 INCHES MAXIMUM |
| NUT COUNTERBORE DEPTH | 0.372 INCHES NOMINAL BOSS |
| NUT HEIGHT | 1.131 INCHES MINIMUM AND 1.133 INCHES MAXIMUM |
| NUT STYLE | SPLINE |
| PILOT DIAMETER | 5.339 INCHES MINIMUM AND 5.344 INCHES MAXIMUM |
| PILOT LENGTH | 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2406 ASSN STD SINGLE TREATMENT RESPONSE SHELL |
| SURFACE TREATMENT | CHROMIUM SHELL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNS |
| THREAD QUANTITY PER INCH | 12 |