1671 machine taps for metric coarse threads can be used for tapping softer materials such as aluminum stainless steel and free machining steel and are manufactured to conform to the American National Standards Institute. With a fluteless design and oil grooves, the taps are designed for efficient threading of through and blind holes and are made from powder metal High Speed Steel to extend tool life and provide superior performance. To further improve the life of the tool and boost performance when under high pressure and friction, 1671 machine taps have a titanium aluminum nitride coating