| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM | 
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | 
| FASTENER LENGTH | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM | 
| FIRST DIAMETER FROM HEAD | 0.065 INCHES MINIMUM AND 0.070 INCHES MAXIMUM | 
| HEAD DIAMETER | 0.134 INCHES MINIMUM AND 0.140 INCHES MAXIMUM | 
| HEAD HEIGHT | 0.082 INCHES MINIMUM AND 0.086 INCHES MAXIMUM | 
| HEAD STYLE | FILLISTER | 
| INTERNAL DRIVE STYLE | HEXAGON | 
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE  AND AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | 
| MATERIAL | IRON ALLOY 660 OVERALL | 
| NOMINAL THREAD DIAMETER | 0.086 INCHES | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | 
| SURFACE TREATMENT | PASSIVATE OVERALL | 
| THREAD CLASS | 3A | 
| THREAD DIRECTION | RIGHT-HAND | 
| THREAD LENGTH | 0.250 INCHES NOMINAL | 
| THREAD QUANTITY PER INCH | 56 | 
| THREAD SERIES DESIGNATOR | UNRC | 
| WIDTH ACROSS FLATS | 0.077 INCHES MINIMUM AND 0.078 INCHES MAXIMUM |