MPT and FPT are simply names for identifying the type of pipe thread for an application.
Different Types of Threads based on 4 Standards
Adapter Guide
Nominal Pipe Size NPS, Nominal Bore NB, Outside Diameter OD
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Math Tools - Pipe Diameters, Threads and Sizes
NPT, NPTF, BSPP and BSPT
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2003/2004 TC30 New Holland HST Diesel Tractor Bid-Assets, 56% OFF
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Math Tools - Pipe Diameters, Threads and Sizes
What is MPT / FPT? What is NPT? Pipe Thread Acronyms