Pipe thread guides
Short, plain-English explanations of pipe threads and fittings — so you can pick the right part the first time.
NPT vs BSP: American and British Pipe Threads Explained
Why a US fitting won't screw into a European tap, how to tell NPT from BSP in 30 seconds, and how to connect the two safely.
Garden Hose Thread (GHT) vs NPT: Why Your Hose Won't Fit a Pipe
Both are called 3/4 inch, but a garden hose and a pipe fitting use different threads. Here's how to spot each and connect them without leaks.
Metric Pipe Threads Explained: M-Threads, ISO and DIN vs NPT and BSP
Europe uses metric for everything except plumbing. Learn where true metric threads show up, how they seal, and how to identify them.
Coupling, Bushing, Nipple or Adapter? Pipe Fitting Names Explained
Female-to-female, male-to-male, or nested? Learn what each pipe fitting is called, with drawings and spinnable 3D models.
Can a 3D Printed Pipe Fitting Hold Water Pressure? Materials and Print Services Explained
PLA works for the garden but not for house plumbing. See which printing processes survive mains pressure and where to order a fitting printed in them.