| FASTENER LENGTH | 0.250 INCHES NOMINAL |
| HEAD DIAMETER | 0.188 INCHES NOMINAL |
| HEAD HEIGHT | 0.070 INCHES NOMINAL |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A 484 AND ASTM A 582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 303 OVERALL |
| NOMINAL THREAD DIAMETER | 0.086 INCHES |
| SHOULDER DIAMETER | 0.093 INCHES MINIMUM AND 0.095 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 0.063 INCHES MINIMUM AND 0.067 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, SHOULDER, SOCKET HEAD NON STANDARD SIZES |
| WIDTH ACROSS FLATS | 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35, TYPE IV FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.126 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 56 |
| THREAD SERIES DESIGNATOR | UNF |