3539057 is a fastener, or metal screw, produced by Bossard, a global leader in the production of standard and customized fastening solutions. The screw is made of carbon steel and has a black phosphate finish. It has a pan head style, machine screw thread, and a Phillips drive. The length of the screw is 15 mm, and it has a thread diameter of 4 mm. This screw is ideal for general use in a variety of applications, including furniture, cabinets, appliances, and outdoor fixtures.