| FASTENER LENGTH | 1.084 INCHES MINIMUM AND 1.125 INCHES MAXIMUM |
| GRIP LENGTH | 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| GRIP DIAMETER | 0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM |
| HEAD HEIGHT | 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT-MACHINE, CLOSE TOLERANCE, AIRCRAFT |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MINIMUM YIELD STRENGTH | 14190 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.5000 INCHES |
| SPECIAL FEATURES | SINGLE DRILLED THRU HOLE IN THE HEAD WITH 0.070 INCH DIAMETER |
| WIDTH BETWEEN FLATS | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.782 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 20 |