| DISTANCE FROM CENTERLINE TO FLAT | 0.470 INCHES MINIMUM AND 0.475 INCHES MAXIMUM |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.545 INCHES MINIMUM AND 2.605 INCHES MAXIMUM ALL HOLES |
| CONCENTRIC HOLE DIAMETER | 0.312 INCHES NOMINAL |
| COUNTERBORE DEPTH | 2.190 INCHES NOMINAL |
| COUNTERBORE DIAMETER | 0.440 INCHES NOMINAL |
| FASTENER LENGTH | 2.735 INCHES MINIMUM AND 2.855 INCHES MAXIMUM |
| HARDNESS RATING | 24.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 1.380 INCHES NOMINAL |
| HEAD HEIGHT | 0.220 INCHES NOMINAL |
| HEAD STYLE | DEE |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 416 OVERALL |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM ALL HOLES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNF |
| STYLE DESIGNATOR | COUNTERBORE UNTHREADED |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.500 INCHES MINIMUM AND 0.590 INCHES MAXIMUM |