Enhance your fastening solutions with this Fillister Head Machine Screw. Crafted from durable steel and coated with zinc for added protection, this screw ensures reliable performance. Compliant with ASME B18.6.3 specifications, it features a 4-40 thread size, making it suitable for various applications. The slotted drive type offers easy installation, while the fillister head provides a secure grip. With a length of .3125 inches, it's perfect for fastening tasks that require precision. Rest assured, this screw is also RoHS compliant, making it an environmentally friendly choice for your projects. Upgrade your toolkit with this essential component today.