BOTTOM TAP LH HSS M10 X 1.5 FEW

Bottom Tap  

Left Hand  

Hss  

M10 x 1.5  

Few  

Bottom taps have no ground threads at the starting end and are generally used after, and in conjunction with a taper or plug tap  

Bottom taps can cut threads to the bottom of blind holes although they do not do well at starting threads  

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