Spiral Flute Tap: 1/4-28, UNF, 3 Flute, Plug, 3B Class of Fit, High Speed Steel, Bright/Uncoated MPN:008370AS

The spiral flute tap comes with three flutes designed to improve chip flow and reduce cutting resistance, providing smooth cutting for various metals. Made from high-speed steel and featuring a bright uncoated finish, this durable tap is suitable for threading UNF fasteners of size 1/4-28, common in aircraft, automotive, and mechanical equipment industries. The plug feature ensures easy cleanup after usage while the class of fit 3B provides precise engagement to minimize runout and thread damage. Its 3 flutes are suitable for roughing or finishing operations, giving users versatility in a single tool.