YMW M4 X .7 Roll Form Tap 2-2-1/2 Lead Manufacture YMW Mfg Part Number 388518 Size (Metric) Thread Limit D7 Number of Lobe Grooves 1 Chamfered Bottom Lead 2 to 2-1/2 Finish/Coating Nitride Material Vanadium High Speed Steel Oversize (Yes/No) No Length of Thread .512 Overall Length (Inch) 2.480 Thread Standard UNF