YM (주 와이엠, formerly known as Youngsin Metal Industrial, 영신금속공업 주) is a manufacturing company specializing in fasteners. It offers bolts, chassis parts, screws, self-drilling screws, stud bolts, and other products. The company provides the whole production process, including materials manufacture, forging, threading, processing, heat processing, step surface processing, selection/packaging, and automatic shipment.