There are two different common threads widely used on abrasive blast nozzles and blast nozzle holders. We generally called them Coarse Contractor Thread and Fine Standard Thread.
Thread Pitch Vs. Threads Per Inch (TPI) - Albany County Fasteners
Detailed guide to understanding coarse and fine thread fasteners
Screw thread - Wikipedia
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Fine Thread vs Course Thread: Strength & Usage
Threads and thread systems — Rust Magazine
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Metric Thread Chart (Complete)
Coarse Contractor Thread vs Fine Standard Thread ☺ Which type of thread do you use? ☺, Vera D. posted on the topic
Vera D. LinkedIn
Coarse Contractor Thread & Fine Standard Thread
Coarse vs Fine Thread – What Thread Type Do I Need? – TANNER
What is the difference between metric and standard fasteners
Coarse Contractor Thread & Fine Standard Thread
