Hydraulic Fitting Guides
Guides for identifying hydraulic fittings, measuring threads, reading thread charts, and looking up torque specs.
Identifying a hydraulic fitting correctly before ordering a replacement or adapter prevents leaks, downtime, and safety hazards. The guides below walk through the process step by step, from measuring the thread with a pitch gauge to looking up the correct dash size in a thread chart.
If you already know both fitting standards and need to connect them, the Adapter Finder shows you the right adapter with seal type and pressure rating. If you are trying to decide between two standards for a new system, the fitting comparisons cover the trade-offs.
All Guides
How to Identify Hydraulic Fittings
Step-by-step guide to identifying unknown hydraulic fittings. Thread pitch measurement, visual identification tips, and common fitting standards.
Hydraulic Fitting Thread Chart & Size Reference
Thread size reference chart for NPT, JIC, BSP, ORFS, DIN, and JIS hydraulic fittings. Nominal sizes, actual OD measurements, and thread pitch.
How to Use a Thread Pitch Gauge on Hydraulic Fittings
How to use a thread pitch gauge to identify hydraulic fitting threads. Step-by-step process for distinguishing JIC, NPT, BSP, ORB, and metric threads.
Hydraulic Fitting Torque Specifications by Type and Size
Torque specifications for hydraulic fittings including JIC, SAE ORB, ORFS, and NPT. Reference charts by fitting size with assembly notes.
NPT Thread Names Explained: MIP, FIP, MPT, MNPT, FNPT, FPT
What MIP, FIP, MPT, MNPT, FNPT, and FPT mean. They are all NPT pipe threads. This guide explains why the same thread has six different names.
Where to Start
If you have an unknown fitting in your hand, start with How to Identify Hydraulic Fittings. It covers the measurement sequence: thread OD, pitch count, seat angle inspection, and standard matching. If you already know the standard but need the exact size, go directly to the Thread Chart and Size Reference.
Related
All Fitting Standards
Thread tables, identification tips, and specs for JIC, NPT, BSP, ORFS, DIN, JIS, and SAE ORB.
Adapter Finder
Select two standards and get the adapter type, seal method, pressure rating, and installation notes.
Fitting Comparisons
Side-by-side breakdowns of commonly confused fitting standards.
Reference data only. Verify thread dimensions with a thread identification gauge before making connections. Working with pressurized hydraulic systems involves serious injury risks including high-pressure injection, burns, and crushing hazards. This site does not replace manufacturer specifications, proper training, or employer safety procedures. See full terms of use.