.Nylon Insert Lock Nut, 5/16"-18, Steel, Grade 5, Zinc Plated, 15 PK A flange nut has a wide flange at one end that acts as an integrated, non-spinning washer.
.Sheet Metal Screw, #14 x 2 in, Zinc Plated Steel Pan Head Square Drive, 100 PK A sheet metal screw has sharp threads that cut into a material such as sheet metal, plastic, wood, hard rubber, aluminum, and other comparable compositions.