| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| THREAD QUANTITY PER INCH | 16 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.390 INCHES MINIMUM AND |
| 1.410 INCHES MAXIMUM |
| FASTENER LENGTH | 6.060 INCHES MINIMUM AND |
| 6.091 INCHES MAXIMUM |
| 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 |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 223.0 ROCKWELL B MINIMUM AND |
| 277.0 ROCKWELL B MAXIMUM OVERALL |
| HEAD STYLE | FLAT CHAMFER |
| HEAD DIAMETER | 1.310 INCHES MINIMUM AND |
| 1.350 INCHES MAXIMUM |
| HEAD HEIGHT | 0.302 INCHES MINIMUM AND |
| 0.322 INCHES MAXIMUM |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| ROUND SECOND SHOULDER |
| SHOULDER DIAMETER | 0.971 INCHES MINIMUM AND |
| 0.976 INCHES MAXIMUM FIRST SHOULDER |
| 0.875 INCHES MINIMUM AND |
| 0.890 INCHES MAXIMUM SECOND SHOULDER |
| SHOULDER LENGTH | 1.250 INCHES MINIMUM FIRST SHOULDER |
| 3.250 INCHES MINIMUM SECOND SHOULDER |
| RIB MAJOR DIAMETER | 0.998 INCHES MINIMUM AND |
| 1.008 INCHES MAXIMUM |
| RIB LENGTH | 0.560 INCHES NOMINAL |
| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.349 INCHES MINIMUM AND |
| 0.411 INCHES MAXIMUM |
| RIB INCLUDED ANGLE | 90.0 DEGREES NOMINAL |
| RIB MINOR DIAMETER | 0.946 INCHES NOMINAL |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS51947-2 |