Catalogue · Reference
Everything you need to identify a thread and choose the right connection.
Article
Thread identification
How to tell a metric thread from an inch one, measure pitch and outside diameter, and avoid confusing BSP with JIC.
Article
Standards
Nineteen ISO, SAE and DIN standards: what the designation means, where it applies and what it is most often confused with.
Article
Materials and finish
Carbon steel, zinc with Cr(III) passivation, what the salt-spray hours mean and how to read a test report.
Article
Manufacturing process
Which parts are forged, which are turned from bar and which are cold-headed from wire, why ferrules are annealed, which steel grades are used and how 6000 psi flanges are made.
Tool
Thread gauge on screen
Hold the fitting against the screen and compare it with the template — every scale is drawn at full size.