
How to measure: Using Vernier calipers, measure the diameter of the threaded section of the drain plug. This may be all we need to match your drain plug with a valve. If possible, also measure the distance between 2 thread peaks for the pitch. A more accurate way to do this is to measure the distance between 6 peaks and divide by 5. The best way to do this is to use thread gauges. If you take your drain plug to a specialist bolt shop, they will be able to accurately determine the size for you. |
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