| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.773 INCHES NOMINAL FIRST HOLE |
| FASTENER LENGTH | 2.910 INCHES MINIMUM AND 2.940 INCHES MAXIMUM |
| HEAD HEIGHT | 0.250 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 8740 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.105 INCHES MINIMUM AND 0.110 INCHES MAXIMUM FIRST HOLE |
| SHOULDER DIAMETER | 0.4988 INCHES MINIMUM AND 0.4996 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 2.288 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| WIDTH BETWEEN FLATS | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
| SURFACE TREATMENT | CHROMIUM GRIP |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.622 INCHES MINIMUM AND 0.652 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |