| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.062 INCHES NOMINAL |
| FASTENER LENGTH | 1.359 INCHES NOMINAL |
| FEATURES PROVIDED | CASEHARDENED |
| HARDNESS RATING | 207.0 BRINELL STANDARD MINIMUM AND 269.0 BRINELL STANDARD MAXIMUM OVERALL |
| HEAD HEIGHT | 0.234 INCHES NOMINAL |
| HEAD DIAMETER | 0.812 INCHES NOMINAL |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1030 OR STEEL COMP 1026 OR STEEL COMP 1033 OVERALL |
| MINIMUM TENSILE STRENGTH | 110000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| SPECIAL FEATURES | 1/16 IN. BY 3/32 IN. TAPER END OF KNURL |
| RIB LENGTH | 0.446 INCHES NOMINAL |
| RIB MAJOR DIAMETER | 0.613 INCHES MINIMUM AND 0.623 INCHES MAXIMUM |
| RIB MINOR DIAMETER | 0.594 INCHES NOMINAL |
| RIB QUANTITY | 39 |
| SHOULDER DIAMETER | 0.594 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER LENGTH | 0.508 INCHES NOMINAL FIRST SHOULDER |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2A |
| THREAD LENGTH | 0.851 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 20 |