| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.349 INCHES MINIMUM AND 0.411 INCHES MAXIMUM |
| FASTENER LENGTH | 6.060 INCHES MINIMUM AND 6.091 INCHES MAXIMUM |
| HARDNESS RATING | 223.0 ROCKWELL B MINIMUM AND 277.0 ROCKWELL B MAXIMUM OVERALL |
| HEAD DIAMETER | 1.310 INCHES MINIMUM AND 1.350 INCHES MAXIMUM |
| HEAD HEIGHT | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL | STEEL COMP 4135 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 5135 OR STEEL COMP 5140 OR STEEL COMP 8637 OR STEEL COMP 8640 OR STEEL COMP 8740 OVERALL |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| RIB INCLUDED ANGLE | 90.0 DEGREES NOMINAL |
| RIB LENGTH | 0.560 INCHES NOMINAL |
| RIB MAJOR DIAMETER | 0.998 INCHES MINIMUM AND 1.008 INCHES MAXIMUM |
| RIB MINOR DIAMETER | 0.946 INCHES NOMINAL |
| SHOULDER DIAMETER | 0.875 INCHES MINIMUM AND 0.890 INCHES MAXIMUM SECOND SHOULDER |
| SHOULDER DIAMETER | 0.971 INCHES MINIMUM AND 0.976 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| SHOULDER SHAPE | ROUND SECOND SHOULDER |
| SHOULDER LENGTH | 1.250 INCHES MINIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 3.250 INCHES MINIMUM SECOND SHOULDER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.390 INCHES MINIMUM AND 1.410 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UNF |