GB/T 6172.2-2000
Prevailing torque type hexagon thin nuts(with non-metallic insert)
GB/T 56-1988
Hexagon thick nuts
GB/T 6173-2015
Hexagon thin nuts , Fine pitch thread
GB/T 6177.1-2016
Hexagon nuts with flange,style 2
GB/T 6177.2-2016
Hexagon nuts with flange,style2-Fine pitch thread
GB/T 805-1988
Tight nuts
GB/T 41-2016
Hexagon nuts
GB/T 6187.1-2016
Prevailing torque type all-metal hexagon nuts with flange,style 2
GB/T 6187.2-2016
Prevailing torque type all-metal hexagon nuts with flange, style 2,Fine pitch thread
GB/T 802.1-2008
Acorn nuts,assembling type
GB/T 804-1988
Hexagon nuts with raised face
GB/T 802-1988
Acorn nuts
GB/T 32076.3-2015
High-strength structural bolting saaemblies for preloading-Part 3:System HR—Single chamfered high strength large hexagon nuts
GB/T 33943-2017
High-strength hexagon nut
GB/T 33943-2017
High-strength hex nut
GB/T 2154-1991
Inner hexagon nut
GB/T 41-2000
Hexagon nuts
GB/T 41-1986
Hexagon nuts
GB/T 6170-2000
Hexagon nuts,Style 1
GB/T 6170-2000
Single chamfered hexagon nut,Style 1