Century Drill and Tool Carbon Steel Plug Tap 1/2-20 NF (1/2-20 National Fine)
- Heat treated and tempered for file hard threads and longer useful life
- Designed for hand cutting applications
- The plug style tap is the most commonly used style of tap with 3 to 5 threads chamfered
- Best drill: 29/64″
Use with Cutting Oil when cutting threads in metal.
