uxcell 1/8PT Male Thread Brass Air Exhaust Silencer Muffler Gold Tone 10 Pcs
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The 1/8PT size is usually the small BSPT size, which stands for British Standard Pipe Thread. The same thread spacing exists, however the threads on a bolt are straight and the threads on a NPT National Pipe Thread are tapered so the base end is wider for a tighter When I used male threads in a female socket, I had to use a lot of Teflon tape to keep the threads in place. There is no way to use a NPT male thread on a PT female socket.