1/4" S Hollow Wall Expansion Anchor 7/16" Drill Size / FASTENER LENGTH: 2.250 INCHES NOMINAL HANDLE DIAMETER: 0.125 INCHES MINIMUM AND 0.625 INCHES MAXIMUM PART NAME ASSIGNED BY CONTROLLING AGENCY: BOLT, EXPANSION ANCHOR SPECIAL FEATURES: METRIC DIMENSIONS: 6.35MM X 51.15MM; CAGE 5YWZ2 IS OEM MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL