| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.060 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| FASTENER LENGTH | 2.370 INCHES NOMINAL |
| HARDNESS RATING | 277.0 BRINELL STANDARD MINIMUM AND 283.0 BRINELL STANDARD MAXIMUM OVERALL |
| HEAD DIAMETER | 1.310 INCHES NOMINAL |
| HEAD HEIGHT | 0.310 INCHES NOMINAL |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 5135 OR STEEL COMP 5120 OVERALL |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| RIB INCLUDED ANGLE | 90.0 DEGREES NOMINAL |
| RIB LENGTH | 0.430 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |
| RIB MAJOR DIAMETER | 1.020 INCHES MINIMUM AND 1.024 INCHES MAXIMUM |
| RIB MINOR DIAMETER | 0.927 INCHES MINIMUM AND 0.931 INCHES MAXIMUM |
| RIB QUANTITY | 36 |
| SHOULDER DIAMETER | 0.974 INCHES MINIMUM AND 0.975 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 1.220 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| THREAD CLASS | 2A |
| THREAD DIRECTION | LEFT-HAND |
| THREAD LENGTH | 1.150 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 16 |