Catalog number: Y841-0420 Features: * Truss head screws have a larger head outer diameter than pan head screws, and have a wider contact surface, so they hold down the surface firmly. * This is a small pack series that is convenient when you only need a small amount. Specifications: * Dimensions (mm) d: M4 * Dimensions (mm) L: 20 * Package: Bag Material/Finish: * Steel * Surface treatment: Trivalent chromate finish (white)
