Taper thread, National Pipe Thread Taper (NPT), whose diameter increases or decreases along the length of the thread. Dies are for producing external threads - either by machine, or by hand when used in a die stock. Thread 3/8" NPT Die outside diameter 1-1/2"
You may also like
NZ Owned & Operated
Wide range of NZ based supply partners!
North and South Islands.
If you like dealing with Kiwis, My Tools is for you!