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PGSberg
Freshman Member
Offline
'75 TR6 - Have a stubborn Trans Fill Plug. Ends are buggered a bit. Will file. Ordering a 7/16th 8point socket. My plan once I get the Transmission fill plug out is to replace it with a Hex Head. Which threading is correct for my application? Not wanting to assume. Teflon tape OK?
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NPTF (National Pipe Taper Fuel) and BSPT (British Standard Pipe Taper) threads differ in several ways, including:
Thread form - NPTF threads have a Unified thread form, while BSPT threads have a Whitworth thread form. Whitworth threads have rounded peaks and valleys, while NPTF threads have flat peaks and valleys.
Thread angle - NPTF threads have a 60° thread angle, while BSPT threads have a 55° thread angle.
Taper - Both NPTF and NPT threads have a taper of 3/4" per foot.
Sealant - NPTF threads provide a leakproof mechanical seal without the need for a sealant, while NPT threads require a sealant to ensure a leakproof seal.
Usage - NPTF threads are commonly used in plumbing applications, while BSPT threads are widely used in applications involving fluid and gas connections, such as plumbing, hydraulics, and pneumatic systems.
Region - NPT threads are common in the United States and a few other countries, while BSP threads are widely used in many other countries.
________________________________________________________________________________________________________________________________________________________
NPTF (National Pipe Taper Fuel) and BSPT (British Standard Pipe Taper) threads differ in several ways, including:
Thread form - NPTF threads have a Unified thread form, while BSPT threads have a Whitworth thread form. Whitworth threads have rounded peaks and valleys, while NPTF threads have flat peaks and valleys.
Thread angle - NPTF threads have a 60° thread angle, while BSPT threads have a 55° thread angle.
Taper - Both NPTF and NPT threads have a taper of 3/4" per foot.
Sealant - NPTF threads provide a leakproof mechanical seal without the need for a sealant, while NPT threads require a sealant to ensure a leakproof seal.
Usage - NPTF threads are commonly used in plumbing applications, while BSPT threads are widely used in applications involving fluid and gas connections, such as plumbing, hydraulics, and pneumatic systems.
Region - NPT threads are common in the United States and a few other countries, while BSP threads are widely used in many other countries.
