Toggle Bolt Anchor Toggle Anchor Type Toggle Bolt Anchor System of Measurement Inch Anchor Diameter 11/16 in Thread Size 1/4 In.-20 Overall Length 4 in Screw Size 1/4 in Screw Length 4 in Thread Length 3 7/8 in Drive Type Combination Slotted/Phillips Head Type Round Head Diameter 0.44 in Head Height 0.19 in Usable Length 2 5/8 in Wing Span 2 in Washer Outside Diameter Not Applicable Material Steel Finish Zinc Plated Color Blue/White Drill Bit Size 11/16 in