| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.046 INCHES MINIMUM AND 0.078 INCHES MAXIMUM |
| FASTENER LENGTH | 2.125 INCHES NOMINAL |
| HARDNESS RATING | 41.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 1.188 INCHES NOMINAL |
| HEAD HEIGHT | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1025 OVERALL |
| MINIMUM YIELD STRENGTH | 75000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| RIB LENGTH | 0.781 INCHES NOMINAL |
| RIB MAJOR DIAMETER | 0.865 INCHES MINIMUM AND 0.875 INCHES MAXIMUM |
| SHOULDER DIAMETER | 0.835 INCHES MINIMUM AND 0.840 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 0.834 INCHES MINIMUM AND 0.844 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.062 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 16 |