License plate screws are used to securely fasten license plates to a license plate bracket. A hex head with a built in washer that can be driven with simple wrenches Metric dimensions Large Diameter Sheet Metal Screws at Ruby Benjamin blog Find the BOLT HEX 7/16-14X1-1/2SS at Ace. License Plate Screw Hillman 5/16-in X 18 Zinc-plated Steel Flange Nut (3-Count License Plate Bolts Head Style: Slotted Hex Flange Screw Size: #14 (M6.3) Length: 5/8 in. Across Flats: 5/16 in. A cap screw is threaded along the whole length of its shank and held by threads tapped in the hole in which it is screwed. These screws provide...