Enhance your fastening experience with our Knurled Thumb Screw. Perfect for easy adjustments, this screw features a 1/4-20 thread and a 1/2 inch length, making it ideal for various applications. Crafted from durable black nylon, it offers both strength and style. The knurled design on the head ensures a secure grip for effortless tightening and loosening. With a head diameter of .54 inches and a height of .365 inches, it provides ample surface area for efficient operation. Upgrade your toolkit with this essential fastening solution.