Tapcon concrete anchors for concrete

I purchased 1/4″ x 1 3/4″ tapcons. The label underlying on the box says I need 3/16″ x 3 1/2″ masonry or Tapcon bit.

The width is correct that needs to be smaller than anchor width. But it says about 3 1/2″ drill bit.

I plan to use the whole length of tapcons …1 3/4 ” long.. Do I need to go all way down to 3 1/2″ with drill bit? I know common sense says no.

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