Hydraulic Fluid System Thread Identification Sheet

From tapered pipe threads like NPT and BSPT to flared seat threads such as JIC and SAE 45°, and O-ring seal threads including ORFS and ORB, each type offers unique sealing mechanisms and is suited to specific applications.

Parker Series Fitting Thread Indentification Step by step

The thread identification given by Parker engineers includes two parts: the oil port and the end of the pipe.

• Step 1 Determine sela type 

• Step 2 Measure Thread Diameter (Confirm with Char)

• Step 3 Confirm Thread Pitch (TPI or Thread Pitch)

Tube Ended

Oil Port Ended

Metric and Flange Fitting

Flange 

Thread Indentification Guide

Inch Thread

Metric Thread