| FASTENER LENGTH | 3.501 INCHES MINIMUM AND 3.531 INCHES MAXIMUM |
| GRIP DIAMETER | 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM |
| GRIP LENGTH | 3.062 INCHES NOMINAL |
| HEAD HEIGHT | 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| LOCKING FEATURE | PATCH THREADS |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT TENSION HEX HEAD CLOSE TOLERANCE |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SURFACE TREATMENT | |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.454 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 24 |
| WIDTH BETWEEN FLATS | 0.554 INCHES MINIMUM AND 0.564 INCHES MAXIMUM |