| CONCENTRIC HOLE DIAMETER | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM |
| DISTANCE FROM CENTERLINE TO FLAT | 0.328 INCHES MINIMUM AND 0.358 INCHES MAXIMUM |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.787 INCHES MINIMUM AND 1.807 INCHES MAXIMUM FIRST HOLE |
| FASTENER LENGTH | 1.943 INCHES MINIMUM AND 1.963 INCHES MAXIMUM |
| HEAD DIAMETER | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM |
| HEAD HEIGHT | 0.077 INCHES MINIMUM AND 0.117 INCHES MAXIMUM |
| HEAD STYLE | DEE |
| HOLE CONFIGURATION STYLE | ROUND |
| HOLE DIAMETER | 0.062 INCHES NOMINAL |
| HOLE QUANTITY | 1 |
| HOLE TYPE | DRILLED |
| MATERIAL | STEEL COMP 4340 OR STEEL COMP E4340 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM FIRST HOLE |
| STYLE DESIGNATOR | COUNTERBORE UNTHREADED |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 18 |