This 5/16"-18 & 3/8"-16 NC straight flute bottoming tap 4F is a cutting/tool-holding tool used in industrial equipment. It performs precision material removal or workholding on a lathe, mill, or drill press as part of a metalworking operation. Key specifications noted on this listing include 5/16"-18, 3/8"-16. It is commonly used in production machining and tooling setups.
