GB/T 1229-2006
High strength large hexagon nuts for steel structures (English Version)

Standard No.

GB/T 1229-2006

Language

Chinese, Available in English version

Release Date

2006

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 1229-2006

Replace

GB/T 1229-1991

Scope

This standard stipulates the formal dimensions, technical conditions and markings of high-strength large hexagonal nuts with thread specifications of M12 ~ M30. This standard is applicable to the steel structure friction type high-strength bolt connection pairs used in conjunction with GB/T 1228 "High-strength large hexagon head bolts for steel structures".

GB/T 1229-2006 Referenced Document

• GB/T 1228 High strength bolts with large hexagon head for steel structures
• GB/T 1231 Specifications of high strength bolts with large hexagon head ，large hexagon nuts，plain washers for steel structures
• GB/T 1237 Designation system for fasteners
• GB/T 5276 Fasteners.Bolts, screws, studs and nuts.Symbols and descriptions of dimensions*， 2015-12-10 Update

GB/T 1229-2006 history

• 2006 GB/T 1229-2006 High strength large hexagon nuts for steel structures
• 1991 GB/T 1229-1991 High strength large hexagon nuts for steel structures