Expansion Anchor Anchor Diameter 5/8 in Overall Length 2 3/4 in Screw Size 5/8 in Thread Size 5/8 In.-11 Thread Depth 0.875 in Thread Type Coarse Material Zamac Alloy Finish Plain Drill Bit Size 1 in Minimum Installation Depth 2 1/2 in System of Measurement Inch Expansion Anchor Type Double Expansion Anchor Material Grade/Class Not Graded Compatible Material Block Brick Concrete Stone Installation Method Machine Screw Minimum Hole Depth 2 1/2 in