Upgrade your projects with our premium 1/4"-28 x 1/2" thumb screws, featuring a robust stainless steel construction for exceptional corrosion resistance and a durable black finish. Each screw comes with a knurled round plastic knob, ensuring easy, tool-free installation and removal. Available in a pack of four, these fine-threaded screws offer a maximum shear strength of 35,000 psi, making them ideal for various applications. Proudly crafted in the USA, they come with a hassle-free lifetime warranty for your peace of mind.