Enhance your fastening tasks with this Knurled Thumb Screw, meticulously designed for convenience and durability. Featuring a 1/4-20 thread size and a 1 1/2-inch length, it offers a secure grip and efficient performance. Crafted from high-quality black nylon 6.6, it ensures strength and resilience in various applications. The knurled head, with a diameter of .54 inches and a height of .365 inches, allows for easy handling and tightening by hand, eliminating the need for tools. Whether for industrial, automotive, or DIY projects, this thumb screw is a versatile and essential tool for any toolkit.