| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.700 INCHES NOMINAL FIRST HOLE |
| FASTENER LENGTH | 3.960 INCHES NOMINAL |
| HEAD HEIGHT | 0.340 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5735 ASSN STD 1ST MATERIAL RESPONSE OVERALL OR AMS 5721 ASSN STD 2ND MATERIAL RESPONSE OVERALL OR AMS 5722 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 651 OVERALL OR IRON ALLOY 660 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.140 INCHES MINIMUM FIRST HOLE AND 0.142 INCHES MAXIMUM FIRST HOLE |
| SHOULDER DIAMETER | 0.685 INCHES MINIMUM FIRST SHOULDER AND 0.686 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER LENGTH | 3.400 INCHES MINIMUM FIRST SHOULDER AND 3.480 INCHES MAXIMUM FIRST SHOULDER |
| WIDTH BETWEEN FLATS | 0.990 INCHES MINIMUM AND 1.005 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.480 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNF |