| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.060 INCHES NOMINAL |
| FASTENER LENGTH | 1.420 INCHES NOMINAL |
| FEATURES PROVIDED | CASEHARDENED |
| HARDNESS RATING | 3.0 ROCKWELL C MINIMUM AND 21.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.160 INCHES NOMINAL |
| HEAD DIAMETER | 0.820 INCHES NOMINAL |
| HEAD STYLE | PAN NO. 2 |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OR ASTM A576 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1023 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OVERALL |
| MINIMUM TENSILE STRENGTH | 110000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| RIB MAJOR DIAMETER | 0.618 INCHES MINIMUM AND 0.628 INCHES MAXIMUM |
| RIB LENGTH | 0.120 INCHES NOMINAL |
| SHOULDER DIAMETER | 0.602 INCHES MINIMUM AND 0.605 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| SHOULDER LENGTH | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM FIRST SHOULDER |
| THREAD CLASS | 3A |
| THREAD DIRECTION | LEFT-HAND |
| THREAD LENGTH | 0.960 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 20 |