Toggle Bolt Anchor Toggle Anchor Type Toggle Bolt Anchor System of Measurement Inch Anchor Diameter 1/2 in Thread Size #6-32 Overall Length 4 in Screw Size 1/8 in Screw Length 4 in Thread Length 3 31/32 in Drive Type Combination Slotted/Phillips Head Type Round Head Diameter 0.25 in Head Height 0.1 in Usable Length 3 1/8 in Wing Span 1.5 in Washer Outside Diameter Not Applicable Material Steel Finish Zinc Plated Color Blue/White Drill Bit Size 1/2 in