Enhance your fastening projects with this high-quality Hex Washer Head Screw. Designed for optimal performance, this ASME B18.6.3-compliant screw features a durable steel construction with a zinc finish coating for added protection against corrosion. Its 5/16-18 thread size and .625-inch length make it suitable for a variety of applications. The hex washer head provides a sturdy grip and allows for easy installation, while its RoHS compliance ensures environmental responsibility. Elevate your hardware game with this essential screw.