| FASTENER LENGTH | 0.500 INCHES NOMINAL0.500 INCHES NOMINAL |
| HEAD STYLE | HEXAGON EXTENDED WASHERHEXAGON EXTENDED WASHER |
| MATERIAL | STEEL OVERALL |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.190 INCHES0.190 INCHES |
| NONMACHINE THREAD STYLE | WIDE FLUTE (TYPE H OR BT)WIDE FLUTE (TYPE H OR BT) |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | UNSLOTTED HEX WASHER HD SELF DRILLING SCREWUNSLOTTED HEX WASHER HD SELF DRILLING SCREW |
| WIDTH BETWEEN FLATS | 0.312 INCHES NOMINAL0.312 INCHES NOMINAL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD DIRECTION | RIGHT-HANDRIGHT-HAND |
| THREAD QUANTITY PER INCH | 1616 |