Thread Identification and Measurement Guide

This guide provides detailed instructions on the identification and measurement of fluid line connectors, which is essential for selecting and installing the appropriate fittings. The document outlines the process of measuring threads using specific tools such as a combination O.D./I.D. caliper, a thread pitch gauge, and a seat angle gauge. It explains how to accurately measure the thread diameter, identify the number of threads per inch, and determine the seat angle for angled ports. The guide also covers various types of connections, including National Pipe Tapered (NPT), Society of Automotive Engineers (SAE), British Standard Pipe (BSP), and German connections, detailing their characteristics and measurement techniques. Additionally, it emphasizes the importance of accurate measurements in ensuring proper sealing and preventing leaks in hydraulic systems. The document serves as a comprehensive resource for professionals involved in fluid transfer and piping systems.