pipe fitting threads - Thread & Engineering Standards

NPT – National Pipe Thread

The National Pipe Thread (NPT) standard is widely used in the United States, Canada, and other regions for plumbing, hydraulic, and gas connections. Unlike parallel threads, NPT threads are tapered, which allows them to create a tight, leak-proof seal without requiring additional sealing elements like O-rings. NPT is governed by ANSI B1.20.1, with variations including:✔ … Read more

BSP – British Standard Pipe Thread

The British Standard Pipe (BSP) thread is a widely used thread standard for pipe fittings in the UK, Europe, Asia, and many other regions. It is primarily used in water, gas, and hydraulic systems to provide a secure, leak-proof connection. BSP threads come in two variations: ✔ BSPP (British Standard Pipe Parallel, also known as … Read more