These 1/4-20 x 1 in. Phillips pan head stainless steel machine screws come as a box of 100. Machine screws are engineered for metal-on-metal fastening applications. The #18-8 stainless steel finish combines a polished look with superior protection against rust and corrosion. They install easily with a screwdriver, which reduces the risk of over-tightening. For installation, drill a hole in the material that matches the diameter of the bolt.