| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.107 INCHES MINIMUM AND 1.137 INCHES MAXIMUM FIRST HOLE |
| FASTENER LENGTH | 1.225 INCHES MINIMUM AND 1.255 INCHES MAXIMUM |
| HEAD DIAMETER | 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM |
| HEAD HEIGHT | 0.380 INCHES NOMINAL |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE |
| WIDTH ACROSS FLATS | 0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| SURFACE FINISH | 125.0 MICROINCHES TOP OF HEAD |
| SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| SURFACE FINISH | 32.0 MICROINCHES SIDES OF HEAD |
| SURFACE FINISH | 32.0 MICROINCHES THREADS |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.455 INCHES MINIMUM AND 0.485 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNF |