A screw is a type of fastener, in some ways similar to a bolt typically made of metal, and characterized by a helical ridge, known as a male thread. Screws are used to fasten materials by digging in and wedging into a material when turned, while the thread cuts grooves in the fastened material that may help pull fastened materials together and prevent pull-out.
||M6 to M16
||Black Oxide, Zinc Plating, Hot Dip Galvanized
||4.6, 4.8, 5.6, 5.8, 8.8, 10.9, 12.9