Introducing our Sems Machine Screw, a versatile and efficient fastening solution for a variety of applications. Crafted from durable stainless steel with a sleek black oxide coating, this screw offers both strength and corrosion resistance. Featuring a 4-40 thread size and a .25-inch length, it is ideal for securely joining components. The square conical washer ensures enhanced stability, while the Phillips drive type allows for easy installation. Compliant with RoHS standards, this screw is not only high-performing but also environmentally friendly. Upgrade your fastening arsenal with the ASME B18.13 certified Sems Machine Screw.