Diameter of the Head: 0.437 inch; Height of the Head: 0.132 inch; Screw Length: 3/4 inch or 19mm (measured from under the head)
Allen Hex Drive Size: 5/32"(0.156")
Made of 304 stainless steel (no coating outside) 18-8 which is superior to regular steel and any zinc plated fasteners, provides good strength and corrosion resistance in bad environments
Thread Size:1/4-20; Thread Type: 20 TPI Coarse Thread (UNC); Thread Style: Right Hand; Thread Coverage: Full Thread