Enhance your fastening solutions with our Knurled Thumb Screw, designed for easy, tool-free installation. Featuring a #4-40 thread size and a 3/16 inch length, this screw is perfect for various applications. Crafted from durable nylon 6.6 material in a natural finish, it offers both strength and corrosion resistance. The knurled head design ensures a secure grip for effortless tightening and loosening. With a head diameter of 0.3 inches and a height of 0.28 inches, it provides optimal leverage for efficient operation. Upgrade your hardware with this high-quality thumb screw.