| DISTANCE FROM CENTERLINE TO FLAT | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.650 INCHES MINIMUM AND 0.710 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 2 |
| FASTENER LENGTH | 1.210 INCHES MINIMUM AND 1.230 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| HEAD DIAMETER | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM |
| HEAD HEIGHT | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| HEAD STYLE | DEE CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| SECOND DIAMETER FROM HEAD | 0.461 INCHES MINIMUM AND 0.462 INCHES MAXIMUM |
| THREAD CLASS | 1A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.500 INCHES MINIMUM AND 0.580 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |