Drill Bits / 9/16 Diameter
9/16" Drill Bits for:
3/8 NPT Drill Size
What size drill bit for 3/8 NPT tap?
A 9/16" drill bit (.5625" diameter) is the correct drill bit size for a 3/8 NPT (pipe tap) which has 18 threads per inch (3/8-18 NPT). The 3/8 NPT is a pipe tap thread designed for a seal. The 3/8-18 NPT thread is one of the most popular thread sizes used in liquid and gas plumbing applications. It is used in homes, commercial buildings, and industrial businesses for water plumbing and compressed air systems.
Here is a summary of the features of the 9/16 drill bit size:
- 9/16" (0.5625" or 14.29mm) cutting diameter.
- Made in the USA from cobalt and HSS.
- Drill Points: 118 and 135 degree included angles.
- Cutting Edges: 2 flutes.
- Drill Lengths: Silver & Deming and jobber.
- Coatings: Black Oxide and Gold Oxide.
Please note the quantities on hand. We have live inventory, so your orders can ship today before 4:30 EST.
