How To Measure Fitting Threads in 3 Steps

Explanation of common threads including BSP & NPT

Easy Guide to Measuring Black Pipe for Gas Plumbing

How to measure pipe fittings？ - QC Hydraulics

Fastener Reference Guide (Metric-Imperial)

Terms & Definitions

BSP vs. NPT Fittings: Which Seal Do You Need?

SUNGATOR Hex Nipple Reducer, 3/4 NPT x 1/2 NPT Male, Reducing Brass Pipe Fitting, 3/4'' to 1/2'' Male Reducer Connector, Reducing Hex Nipple Adapter with Sealing Tape (2 Pack), Pipe Fittings

Identifying Air Hose Fittings - TCH Industries

How to Measure NPT Fittings - Sanitary Fittings

AN-fittings measurement - A guide to the right size