How to Identify a Thread Type | NPT | PT | BSP | Trimantec

Learn how to identify any thread type in this short how-to video. Then, head over to our full Thread Identification blog to view size charts and download a PDF version. 👇

https://trimantec.com/thread-identification-guide/

So you finally found the right solenoid valve to replace your broken one. You call to check stock on the item and the sales rep asks you what thread type you need. You ask, “How do I find out what thread type I need?” Fortunately, we’ve got you covered.

It’s important to identify the specific thread type you need in order for your equipment to function at its best. Pneumatic components such as air cylinders, valves, and air preparation units come equipped with specific port threads. Choosing the correct thread type will ensure optimum compatibility with your equipment.

Thread Identifying Tools You Need

Caliper – A caliper is a useful tool that measures the outside diameter of a male thread and inside diameter of a female thread. Using a caliper will give you the most accurate and precise measurements, but a straight steel ruler is a good alternative.

Pitch Gauge – A pitch gauge measures the threads per inch. For metric threads, this tool measures the distance between the threads.

Step 1 – Male Threads v. Female Threads
First, you’ll need to identify whether the thread type is male or female. Take a look at where the threads are located. If they’re on the outside of the thread, it’s a male thread. If they’re on the inside of the thread, it’s a female thread.

Step 2 – Tapered Threads v. Parallel Threads
Next, determine if the thread is tapered or parallel. Tapered threads become narrower as they extend outward while parallel threads remain the same diameter.

Step 3 – Pitch Size
The next step in identifying your thread type is to determine the pitch size. A thread’s pitch size is the number of threads per inch or the distance between threads on metric thread types.

Step 4 – Thread Diameter
After you’ve figured out the pitch size, you’ll need to determine the thread diameter. Using the caliper again, measure the outside diameter on a male thread and inside diameter on a female thread.

Step 5 – Thread Type Standard
The final step in identifying your thread type is to identify the thread type standard. Gather the information from the previous steps and compare it with the measurements in the thread size charts in the Thread Identification Guide.

https://trimantec.com/thread-identification-guide/

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