| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 4.067 INCHES MINIMUM AND |
| 4.097 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| THREAD LENGTH | 1.005 INCHES MINIMUM AND |
| 1.035 INCHES MAXIMUM |
| HEAD STYLE | SPLINE EXTENDED WASHER |
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.6250 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3A |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-8837 MIL SPEC SINGLE TREATMENT RESPONSE OR |
| AMS-C-8837 TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HEAD INSIDE DIAMETER | 0.470 INCHES MINIMUM AND |
| 0.510 INCHES MAXIMUM |
| HEAD HEIGHT | 0.562 INCHES NOMINAL |
| EXTENDED WASHER DIAMETER | 1.330 INCHES MINIMUM AND |
| 1.340 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.090 INCHES NOMINAL |
| HEAD MINOR DIAMETER | 0.673 INCHES MINIMUM AND |
| 0.688 INCHES MAXIMUM |
| GRIP LENGTH | 2.940 INCHES NOMINAL |
| GRIP DIAMETER | 0.6991 INCHES MINIMUM AND |
| 0.7011 INCHES MAXIMUM |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81755 |
| MFR SOURCE CONTROLLING REFERENCE | C9771 |