Enhance your fastening solutions with this Sems Machine Screw, designed to meet ASME B18.13 specifications. Crafted from durable Stainless Steel with a Zinc coating for added protection, this screw ensures reliable performance in various applications. Featuring a 4-40 thread size, External Tooth washer, and Pan head with a Phillips drive, it offers easy installation and secure fastening. With a length of .3125 inches and full RoHS compliance, it is both efficient and environmentally friendly. Upgrade your hardware arsenal with this versatile and high-quality machine screw.