| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.899 INCHES MINIMUM |
| FASTENER LENGTH | 3.919 INCHES NOMINAL |
| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND |
| 43.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| HEAD HEIGHT | 0.618 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.679 INCHES MINIMUM AND |
| 0.690 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 1.040 INCHES MINIMUM AND |
| 1.050 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.150 INCHES NOMINAL |
| HOLE CONFIGURATION STYLE | HEXAGON FLATS |
| HOLE TYPE | DRILLED |
| HOLE QUANTITY | 4 |
| HOLE DIAMETER | 0.045 INCHES MINIMUM AND |
| 0.060 INCHES MAXIMUM |
| GRIP LENGTH | 3.0 INCHES NOMINAL |
| GRIP DIAMETER | 0.6230 INCHES MINIMUM AND |
| 0.6240 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, TENSION, STEEL, EXTERNAL WRENCHING |