Manufactured in marine grade aluminum, Suitable for general purpose internal and external marine environments Find the balance between hard & Soft, aluminum rivets consist simply of a shaft and head which are deformed with a hammer or rivet gun. Corrosion resistance, great to have around for use in wood and wet environments Excellent for Trailer repair applications, aluminum boats, John Boats, Aircraft, Making Armor, Custom Rat Rods, roofing, building etc DIMENSIONS: 3/16" x 1/2" 100-Pack The Brazier Head Rivet is a solid rivet that requires a bucking tool to install properly. It has a dome shaped head and a solid shank that gets deformed when compressed to secure the panels it is inserted into. Great for repairing/replacing dead and leaky rivets in aluminum V-hull boat, Aircraft, Making Armor, Custom Rat Rods, John Boats, etc.