Download or read book GB T 1229 2006 Translated English of Chinese Standard GBT 1229 2006 GB T1229 2006 GBT1229 2006 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2018-01-08 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This national standard specifies the style and size, technical condition and tagging of the high strength large hexagon nuts whose screw dimension is M12~M30. This national standard is applicable to the contact sets of friction-type high strength bolt hexagon nut and plain washer for steel structures which are used together with GB/T 1228-2006 High Strength Bolts with Large Hexagon Head for Steel Structures.