| DISTANCE FROM CENTERLINE TO FLAT | 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.260 INCHES MINIMUM AND 0.290 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 0.640 INCHES MINIMUM AND 0.700 INCHES MAXIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 3 |
| FASTENER LENGTH | 1.180 INCHES MINIMUM AND 1.200 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM |
| HEAD HEIGHT | 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
| HEAD STYLE | DEE CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SECOND DIAMETER FROM HEAD | 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 1A |
| THREAD DIRECTION | RIGHT-HAND |
| THIRD DIAMETER FROM HEAD | 0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| THREAD LENGTH | 0.520 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 28 |