The Allstar Performance Sm Hd Rivet 250pk White Flange Type is expertly designed for solid and secure fastening. These tri-fold rivets have a perforated body that expands to create a large backside surface, eliminating the need for backer washers. With a grip range of 1/16 to 3/8 inch, they provide versatile attachment solutions for various applications. Each set contains 250 pieces, featuring a small 3/8 inch head and a 3/16 inch mandrel, finished in a sleek white.