Download or read book GB T 800 2020 Translated English of Chinese Standard GBT 800 2020 GB T800 2020 GBT800 2020 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2021-05-22 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the types and dimensions, technical conditions, reference standards and markings of countersunk head double nib bolts. This Standard is applicable to countersunk head double nib bolts with a thread specification of M6 ~ M12, performance grade of Grade 4.8 and product grade of Grade C.