GB/T 5285-2017: Translated English of Chinese Standard. (GBT 5285-2017, GB/T5285-2017, GBT5285-2017): Hexagon head tapping screws
https://www.chinesestandard.net, May 18, 2019 - Technology & Engineering - 9 pages
This Standard specifies type size, technical conditions and marks for hexagon head tapping screws. This Standard applies to hexagon head tapping screws of which thread size is ST 2.2~ST 9.5, product level is A.
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