Spiral Flute Tap: 1-1/2-8, UN, 5 Flute, Semi-Bottoming, 2B & 3B Class of Fit, High Speed Steel, TiAlN Finish MPN:7557119

The 1-1/2 - 8 UN, 5 flute, semi-bottoming high speed steel tap is an exceptional tool for through and blind hole threading in a wide variety of materials such as stainless steel, aluminum or bronze. Its unique spiral flute design allows for fast and efficient chip removal while also reducing heat generation to prevent breakage and maintain thread accuracy. The semi-bottoming feature ensures cleaner holes by removing less material from the bottom portion of the tap, eliminating the need for reaming in many applications. It comes with a TiAlN finish that provides excellent lubricity, cutting edges hardness and wear resistance, prolonging tool life even in demanding applications where tough or abrasive materials are present. Its UNF Class 2B and 3B fit ensure tight tolerances and precise thread formation to meet ISO standards for quality control. This robust tap is perfect for aerospace, automotive, hardware manufacturing, general machining shops and any other industrial setting where dependable and high precision threading solutions are required.