00-90 Tap 2 flute Plug with TiN coating; American miniature (to ANSI B18.6.3) Size 00 thread 90 per inch, Shank 0.060" made from hardened high speed steel our taps are designed for production taping in Automatic screw machines, Tappers, CNC lathes and CNC mills. The coating used TiN (Titanium Nitride) very thin, increases tap performance and tool life. In our shop coated taps typically tapped three times the number of holes compared to uncoated. Image is of this tap. Overall length of Tap is 25mm (0.984") threaded length (tip to end of thread) 5.5mm (0.216") lengths can vary slightly between batches.