| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.062 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
| FASTENER LENGTH | 3.125 INCHES NOMINAL |
| FEATURES PROVIDED | CASEHARDENED |
| HARDNESS RATING | 21.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.312 INCHES NOMINAL |
| HEAD DIAMETER | 1.125 INCHES NOMINAL |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL | STEEL COMP 1035 OR STEEL COMP 1536 OR STEEL COMP 1037 OR STEEL COMP 1038 OR STEEL COMP 1040 OVERALL |
| MINIMUM TENSILE STRENGTH | 114000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| RIB LENGTH | 0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM |
| RIB MAJOR DIAMETER | 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM |
| SHOULDER DIAMETER | 0.835 INCHES MINIMUM AND 0.840 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| SHOULDER LENGTH | 0.844 INCHES NOMINAL FIRST SHOULDER |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2A |
| THREAD LENGTH | 1.625 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 16 |