#10-16 x 1/2" Hex - Unslotted Drive Indented Hex Washer Head Zinc Finish #2 Point Steel Self-Drilling Screw / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 0.500 INCHES NOMINAL HEAD STYLE: C7 HEXAGON EXTENDED WASHER WIDTH BETWEEN FLATS: 0.312 INCHES NOMINAL END ITEM IDENTIFICATION: F-15SA THREAD QUANTITY PER INCH: 16 NONMACHINE THREAD STYLE: A5 WIDE FLUTE (TYPE H OR BT) NONMACHINE NOMINAL THREAD DIAMETER: 0.190 INCHES PART NAME ASSIGNED BY CONTROLLING AGENCY: UNSLOTTED HEX WASHER HD SELF DRILLING SCREW MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL