| FASTENER LENGTH | 3.423 INCHES MINIMUM AND 3.453 INCHES MAXIMUM |
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 1.428 INCHES MINIMUM AND 1.438 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLTS, INTERNAL WRENCHING |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD LENGTH | 1.162 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 14 |
| THREAD SERIES DESIGNATOR | UNF |
| WIDTH ACROSS FLATS | 0.6257 INCHES MINIMUM AND 0.6295 INCHES MAXIMUM |