| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 1.000 INCHES |
| THREAD QUANTITY PER INCH | 8 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.812 INCHES MINIMUM |
| FASTENER LENGTH | 3.531 INCHES NOMINAL |
| MATERIAL | STEEL COMP 1020 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| HARDNESS RATING | 79.8 ROCKWELL B NOMINAL OVERALL |
| MINIMUM YIELD STRENGTH | 43000 POUNDS PER SQUARE INCH |
| HEAD STYLE | PAN NO. 2 |
| HEAD DIAMETER | 1.688 INCHES NOMINAL |
| HEAD HEIGHT | 0.500 INCHES NOMINAL |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER DIAMETER | 1.250 INCHES NOMINAL FIRST SHOULDER |
| 0.625 INCHES NOMINAL SECOND SHOULDER |
| SHOULDER LENGTH | 2.500 INCHES NOMINAL FIRST SHOULDER |
| 0.219 INCHES NOMINAL SECOND SHOULDER |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.281 INCHES NOMINAL FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.188 INCHES NOMINAL FIRST HOLE |
| SPECIAL FEATURES | W/CASTELLATED HEX NUT |