| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.060 INCHES NOMINAL |
| FASTENER LENGTH | 2.880 INCHES MINIMUM AND 2.910 INCHES MAXIMUM |
| FEATURES PROVIDED | CASEHARDENED |
| HEAD DIAMETER | 1.190 INCHES MINIMUM AND 1.310 INCHES MAXIMUM |
| HEAD HEIGHT | 0.310 INCHES MINIMUM AND 0.340 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 4427 OR STEEL COMP 8640 OVERALL |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| RIB LENGTH | 0.500 INCHES NOMINAL |
| RIB MAJOR DIAMETER | 0.810 INCHES MINIMUM AND 0.820 INCHES MAXIMUM |
| RIB QUANTITY | 36 |
| SHOULDER DIAMETER | 0.783 INCHES MINIMUM AND 0.786 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| SHOULDER LENGTH | 1.470 INCHES MINIMUM AND 1.500 INCHES MAXIMUM FIRST SHOULDER |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.320 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UNF |