A Comprehensive Guide to PVC Pipe Fittings
PIPE THREAD SIZES - MAKING SENSE OF PIPE THREADS
What are AN Fittings and Adapters?
Hydraulic Fitting Identification and Connection Types
Hydraulic fitting size chart - QC Hydraulics
National Pipe Thread (NPT): Dimensions& Formulas
British Standard Pipe - BSP
All About Pipe and Hose Threads
AN NPT thread sizes