Selecting a Tap Drill
Monday, 26. July 2010
Are you trying to determine what size of hole to drill before cutting threads with a tap?
Rather than digging out your copy of Machinery’s Handbook, check your drill index. Many of the better indexes have a tap drill chart built right in.
Uncle Buck Says:
I have always liked those big three in one sets of letter, number, and fractional bits all rolled into one. That is a good tip on the drill index thing there Steve.
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