The 3/4 tap drill size is 13/16. This is the size of the hole that should be drilled in order to accommodate a 3/4″ tap. It is important to use this correct size in order to ensure that the tap threads are properly engaged and that the hole has been made with clean threads.

What Drill is Used to Tap a 3/4-10 Hole?

The drill used to tap a 3/4-10 hole is a #21 size drill bit. This size drill bit will create the correct hole size for the tap, as well as allowing for enough clearance for debris to be displaced during tapping. It is important to use the correct size drill bit in order to ensure that you have a strong and secure thread when you are finished.

What Size is a 3/4 Tap?

The size of a 3/4 tap is 3/4-10 UNF, which stands for Unified National Fine. This is the standard size used for a 3/4-inch tap and will be used when creating threaded holes of this size.

What is the Correct Tap Drill for a 3/4 14 NPT Pipe Thread?

The correct tap drill for a 3/4-14 NPT pipe thread is a #7 drill bit. This size drill bit will create the correct-sized hole to accommodate the tap. It is important to use the correct size drill bit in order to ensure that you have a strong and secure thread when you are finished.

What Size Hole to Drill for Tapping?

The size of the hole to drill for tapping depends on the size of the tap being used. Generally for a 1/4” tap, a 3/16” hole should be drilled; for a 3/8 tap, a 7/32” hole should be drilled; for a 1/2” tap, a 9/32” hole should be drilled; and for a 3/4” tap, a 13/16” hole should be drilled.

Conclusion

Drilling and tapping correctly is an essential skill for any DIYer [1] or professional. Knowing the correct drill size to use for a 3/4 tap is important in order to make sure that your threads are strong and secure. The 3/4 tap drill size is 13/16, and the drill bit that should be used is a #21 size bit.

It is important to use the correct size drill bit in order to ensure that you have a strong and secure thread once you are finished. Remember, when in doubt, always consult with a professional and remember to wear safety goggles when drilling and tapping!