| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.408 INCHES NOMINAL FIRST HOLE |
| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 2.502 INCHES NOMINAL |
| FASTENER LENGTH | 3.532 INCHES NOMINAL |
| HEAD HEIGHT | 0.400 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| PROPRIETARY CHARACTERISTICS | PACS |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| RIB MINOR DIAMETER | 0.7485 INCHES MINIMUM |
| RIB LENGTH | 0.450 INCHES NOMINAL |
| RIB MAJOR DIAMETER | 0.7494 INCHES MAXIMUM |
| SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES MINIMUM FIRST HOLE AND 0.151 INCHES MAXIMUM FIRST HOLE |
| SHOULDER DIAMETER | 0.7485 INCHES MINIMUM THIRD SHOULDER AND 0.7494 INCHES MAXIMUM THIRD SHOULDER |
| SHOULDER DIAMETER | 0.8424 INCHES MINIMUM SECOND SHOULDER AND 0.8424 INCHES MAXIMUM SECOND SHOULDER |
| SHOULDER DIAMETER | 0.9357 INCHES MINIMUM FIRST SHOULDER AND 0.9367 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 1.200 INCHES NOMINAL THIRD SHOULDER |
| SHOULDER LENGTH | 1.219 INCHES NOMINAL SECOND SHOULDER |
| SHOULDER LENGTH | 0.533 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | ROUND ALL SHOULDERS |
| SPECIAL FEATURES | SURFACE FINISH ON FIRST,SECOND AND THIRD SHOULDERS 63.0 MICROINCHES; INTERNAL HOLE 0.030 IN. MIN,0.040 IN. MAX DIA |
| WIDTH BETWEEN FLATS | 1.239 INCHES MINIMUM AND 1.252 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.580 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNF |