Professional Tap & Die Set, 40 Piece HSS Round Adjustable

Tap & die set made in Japan offers a combination of high‑grade steel, precision grinding, and strict quality control that is widely recognized in professional machining environments. These sets maintain performance over many years of use, even in demanding industrial environments.

This 40-piece round tap and die set includes all the common NC, NF, and NPT sizes from #4 to 1/2".

The 17 1-inch round adjustable dies and plug taps include the following threads: NC: 4-40, 6-32, 8-32, 10-24, 12-24, 1/4"-20, 5/16"-18, 3/8"-16, 7/16"-14, 1/2"-13, NF: 10-32, 1/4"-28, 5/16"-24, 3/8"-24, 7/16"-20, 1/2"-20
NPT: 1/8"-27

The set also includes a screw pitch gage, a screwdriver, adjustable tap wrench (1/8"-1/2"), die stock (1" O.D.), and two T-handle tap wrenches 1/8" - 1/4" and 1/4" - 1/2".

Tips and Tricks for using Taps & DIes

1. Always start threading slowly to ensure alignment and prevent cross-threading 
   
2. Use cutting oil generously to reduce friction and extend tool life 
   
3. Reverse the tap or die occasionally to break chips and prevent jamming 
   
4. Match metric or imperial threads carefully to avoid incompatibility 
   
5. Practice on scrap material before working on critical parts to gain confidence

Need help choosing the correct tap? Try this quick guide: Choosing the Correct Tap

Here is a chart of Tap & Clearance Drill Sizes