W (whitworth) and U (unified) threads
W (whitworth) threads have a thread angle of 55°, and U (unified) threads have a thread angle of 60°, so it is not recommended to fit them together. 詳細表示
What is the difference between UNC an...
The F in UNF stands for fine pitch. On the other hand, the C in UNC stands for coarse pitch . For example: 5/8-11 UNC (11 peaks between 1 inch) 5/8-18 UNF ... 詳細表示
Coarse pitch of metric thread (M1~M68...
In the size of M1~M68, the yellow part in the attachment below is the coarse pitch. Reference: List of the coarse pitch 詳細表示
Gauge Inspection Certificate Web System
From which production date can this system be used? It is available for products completed (manufactured) in or after April 2011. ▽References: Gauge Inspec... 詳細表示
Pipe taper gauge (R and PT) are not differentiated by accuracy class. There is a distinction between parallel screws for pipes gauge (G and PF). G scre... 詳細表示
What is a PF thread? It is a screw commonly called a parallel thread for JIS (English type) pipes, and it is a parallel thread for mechanical coupling of th... 詳細表示
What is a PS thread? It is a thread commonly called a parallel screw for JIS (English type) pipes, and it is a parallel thread for tight coupling of the old... 詳細表示
What is a BSP screw? What taps and ga...
BSP is a standard for British (BS) pipe (P) threads and is classified into the following three types. Since the screw shape and dimensions are the same as... 詳細表示
Tire Valve Screws < Thread Standard> ...
・Automobile tire valves This is a standard for tire valves used in automobile tires and motorcycle tires specified by JIS. JIS D 4207 ・Bicycle tire valv... 詳細表示
I need a calibration certificate for ...
If the gauge is confirmed to be brand-new and ito is within three years from the inspection date stated on the inspection report, we can issue the certificat... 詳細表示
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