List of tolerances for metric threads...
The former JIS standard for metric threads has been erased, so it cannot be confirmed from JIS. In the table below, you can refer to some of the allowable d... 詳細表示
C‑mount threads and available machini...
A C‑mount thread is a mounting thread for photographic lenses used on motion‑picture cameras, as specified in the former JIS standard. The designation 1‑32U ... 詳細表示
What are UNJC and UNJF threads?
UNJC and UNJF threads are thread standards mainly used in the aircraft industry. For internal threads, UNC and UNF taps or thread mills can be used interc... 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
Screw Threads for High‑Pressure Gas C...
JIS B 8246 specifies the screw threads used in valves for high‑pressure gas cylinders. The thread form is a 55‑degree rounded‑crest triangular thread, and t... 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
What is an RC screw? It is a thread commonly called a tapered thread for JIS (ISO) pipes, and it is a ttapered thread for pressure‑tight sealing. （JIS B 020... 詳細表示
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
How to refer to JIS standards? I want...
In order to refer to JIS standards, it is common to refer mainly to the JIS Handbook. It can also be viewed at libraries. Standards can be viewed via the ... 詳細表示
What is an NPSM screw? ANSI is a combination of external thread , internal thread and parallel threads with a relatively precise fit in the machine coup... 詳細表示
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