ZELX SS 3/8-16 H3 Spiral Point Plug Tap Manufacture YMW Mfg Part Number 382617 Size (Inch) Thread Limit H3 Number of Flutes 3 Chamfered Plug Lead 3 to 5 Finish/Coating Black Oxide Material Vanadium High Speed Steel Oversize (Yes/No) No Length of Thread .748 Overall Length (Inch) 2-15/16 Thread Standard UNC