| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.271 INCHES MINIMUM AND 3.291 INCHES MAXIMUM FIRST HOLE |
| CONCENTRIC HOLE DEPTH | 2.344 INCHES MINIMUM AND 2.406 INCHES MAXIMUM |
| CONCENTRIC HOLE DIAMETER | 0.188 INCHES NOMINAL |
| COUNTERBORE DEPTH | 0.068 INCHES MINIMUM AND 0.093 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 0.501 INCHES MINIMUM AND 0.508 INCHES MAXIMUM |
| DISTANCE FROM CENTERLINE TO FLAT | 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| FASTENER LENGTH | 3.109 INCHES MINIMUM AND 3.172 INCHES MAXIMUM |
| HEAD HEIGHT | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM |
| HEAD DIAMETER | 0.855 INCHES MINIMUM AND 0.885 INCHES MAXIMUM |
| HEAD STYLE | DEE CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 8740 OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES NOMINAL FIRST HOLE |
| STYLE DESIGNATOR | COUNTERBORE UNTHREADED |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.781 INCHES MINIMUM AND 0.844 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |