What Size Threads do Tap Handles and Facets Have
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Standard Thread Size: 99% of tap handles in the U.S. use a 3/8"-16 thread on both the ferrule (bottom of the handle) and the faucet.
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Metric Exceptions: A small number of imported tap handles use a metric M10-1.5 thread, but these are rare in the U.S. market.
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How to Check the Tap Handle Thread Size:
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Bring your tap handle to a local hardware store and use a thread checker commonly found on the bolt and nut isle.
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Alternatively, test it with a 3/8"-16 bolt—if it threads in smoothly, it's a match.
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How to Check the Faucet Threads:
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Use a 3/8"-16 nut and see if it threads onto the faucet post. If it does, you have standard U.S. faucet threads.
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