GTD 19955 Metric Hand Tap Plug Tap Style General Purpose High Speed Steel TiN Coated Finish 4 Flutes Size M12 Pitch 1.75 Thread Length 1.656 In Overall Length 3.38 In 3-5 Pitches Pitch Diameter Limits D6 Shank Dia 0.367 In Surface Treated TiN Coated For Use In Through Hole And Blind Hole Applications With Higher Speeds Tolerance 3B USCTI Standards