| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 1.000 INCHES MINIMUM AND |
| 1.062 INCHES MAXIMUM |
| MATERIAL | IRON ALLOY 660 OVERALL |
| THREAD LENGTH | 1.0 INCHES NOMINAL |
| HEAD STYLE | CROWNED HEXAGON |
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3A |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE AND |
| AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| HEAD HEIGHT | 0.203 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.563 INCHES NOMINAL |
| GRIP LENGTH | 0.031 INCHES MINIMUM AND |
| 0.062 INCHES MAXIMUM |
| FEATURES PROVIDED | FINISHED HEAD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, MACHINE CROWNED HEXAGON HEAD |