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H1

What is PJ threads?

【英】困ったときの知恵袋詳細
Cutting Taps Special Threads Standard (Screw Threads, Center Holes)
I purchased a water faucet to attach to a water pipe.
In the manual for the faucet, the screw thread standard is "PJ 1/2". What type of standard is this screw thread?
And what type of internal thread can I attach to this faucet?
PJ threads are specified in the JIS standard "B 2061 Water faucet" and used for water pipe faucets. Basically, it is used in combination with a parallel internal screw thread for taper pipe threads Rp (PS). Please see the explanation below for more details.

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