QC/T 340-2017: Translated English of Chinese Standard. (QCT 340-2017, QC/T340-2017, QCT340-2017): Hexagon bolts with serrated flange for automobile
https://www.chinesestandard.net, 2018. 9. 1. - 14페이지
This Standard specifies hexagon bolts with serrated flange for automobile of which thread specifications are M6 ~ M20, M8 ~ M20 and M10 ~ M20, performance level is 8.8, 10.9, product level is A and B.
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