Expansion Anchor, Anchor Diameter 1/4 in, Overall Length 1 3/8 in, Screw Size 1/4 in, Thread Size 1/4 In.-20, Thread Depth 0.5 in, Thread Type Coarse, Material Zamac Alloy, Finish Plain, Drill Bit Size 1/2 in, Minimum Installation Depth 1 1/4 in,...