M.90 Tap, aka: M.9 & .90UNM Tap design: 3 flute Bottoming, made to DIN standards thread pitch 0.225mm threading length approximate 4.0mm, Shank 0.060" made from "HSS" hardened high speed steel our taps are designed for production taping in Automatic screw machines, Tappers, CNC lathes and CNC mills. Image is representative of the item for sales. Overall length of Tap is 25mm (.984") threaded length (tip to end of thread) 4.0mm (0.160") lengths can vary slightly between batches. Please note this tap's Bottoming design has short lead, about three threads and it has a flat on its end. Price listed is for 1 to 9 pieces.