| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.360 INCHES NOMINAL FIRST HOLE |
| FASTENER LENGTH | 2.540 INCHES MINIMUM AND 2.560 INCHES MAXIMUM |
| HEAD HEIGHT | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4140 OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| SHOULDER DIAMETER | 0.747 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER LENGTH | 1.940 INCHES MINIMUM AND 1.960 INCHES MAXIMUM FIRST SHOULDER |
| SHANK UNTHREADED HOLE DIAMETER | 0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM FIRST HOLE |
| SPECIAL FEATURES | CONCENTRIC HOLE IN HEAD,DIA. 0.486 IN.; 1.870 IN. LONG |
| WIDTH BETWEEN FLATS | 1.000 INCHES NOMINAL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.510 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 18 |