Enhance the efficiency of your assemblies with this Sems Machine Screw. Crafted from durable steel with a protective zinc coating, it ensures long-lasting performance in various applications. Featuring a 1/4-20 thread size and a pan head with a slotted drive type, it offers easy installation and secure fastening. The included external tooth and split lock washer further enhance stability. With a length of .625 inches and ASME B18.13 specification compliance, this screw is a reliable choice for your projects. Rest assured, it meets RoHS standards for environmental friendliness. Elevate your assembly processes with this high-quality machine screw.