Tungsten Nut Standard

Currently, there are more generic GB (GB), German standard (DIN), International Standards (ISO), the Japanese standard (JIS), American Standard (ASTM / ANSI), which are all as standards of tungsten nut. Among them, the national standard, German standard, the standard represented by M (for example, M8, M16), American, British is expressed as a fraction or # size (such as 8, # 10, 1 / 4,3 / 8).

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