Last night I was trying to tap a thread in some round stock steel. I drilled the starting hole with a 13/64" bit (which i believe is correct). I started the tap and was less than 1/4 inch in and started backing out and 2 of the 4 flute tips chipped (best i could tell).
I’ve ordered an authentic Morse replacement that should be here by Thursday. I should be able to get it to the cabinet by Fri.
[List No. 2046 - 1/4-20; Plug; H3; Hand Tap; 4 Flutes; High Speed Steel;]
http://www.morsecuttingtools.com/cgi/CGP2SRIM?PMITEM=32407&PARTPG=CGP2LMCD&PAMENU=&PAHDID=000000174829839&PARDID=018385529526688
I apologize for any inconvenience to other members. Please let me know if we think the one i’ve ordered isn’t the correct one. I’ve left the chipped bit in the case.