Hammer Drive Pin Anchor Set, Anchor Diameter 3/16 in, Overall Length 7/8 in, Thread Size Not Applicable, Thread Length Not Applicable, Anchor Material Zamac Alloy, Pin Material Steel, Finish Zinc Plated, Head Type Mushroom, Drill Bit Size 1/4 in, Minimum Installation Depth 5/8 in, Maximum Material Thickness 1/4 in, Ultimate Tension Strength (4, 000 psi Concrete) 640 lb, Pin-Drive Anchor Type Metal Removable Nail Drive Anchor, System of Measurement Inch. This item has been restricted from sale in the following state (s): []