Introducing our Flat Head Machine Screw, a versatile and essential component for various assembly applications. Constructed from durable steel with a zinc finish coating, this screw ensures reliable performance and corrosion resistance. Featuring a 4-40 thread size and a Phillips drive type, it offers ease of installation and secure fastening. With a length of .5625 inches, it is suitable for a range of projects. Compliant with RoHS regulations, it is eco-friendly and safe for use in various industries. Trust in the quality and precision of this ASME B18.6.3 specified screw for your fastening needs.