Download or read book GB T 5780 2016 Translated English of Chinese Standard GBT 5780 2016 GB T5780 2016 GBT5780 2016 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2017-01-17 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies type sizes, technical conditions and marks of hexagon head bolts - product grade C. This Standard is applicable to hexagon head bolts of which thread sizes are M5 ~ M64, performance grades are 4.6 and 4.8, the product grade is C.