1/4-20 x 2" Stainless Pan Phillips Machine Screws 100 Qty.Product Overview These machine screws are used with nuts or directly into a female threaded receptacle to fasten metal parts together. They are installed into an existing or predrilled, pre tapped hole and are fully threaded. Measurements are made from the underside of the head to the tip of the screw to obtain fastener length. If nuts are needed, use with nuts of the same material, finish, and threading for proper fit. Specifications Size 1 4 20 x 2"