GB/T 94.1-2008 Specification for spring washers—Single coil spring lock washers

GB/T 94.3-2008 Specification for spring washers—Curved and wave spring washers

GB/T 94.1-1987 Specifications for spring washers—Single coil spring lock washers

GB/T 5222 GB/T 90.1-2002 Fasteners—Acceptance inspection GB/T 90.1-2023 Fasteners—Acceptance inspection GB/T 90.2-2002 Fasteners—Marking and packaging GB/T 230.1-2004 Metallic Rockwell hardness test—Part1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2009 Metallic materials—Rockwell hardness test—Part 1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2018 Metallic materials—Rockwell hardness test—Part 1:Test method GB/T 1220-1992 Stainless steel bars GB/T 1220-2007 Stainless steel bars GB/T 1222-1984 Spring steel GB/T 1222-2007 Spring steels GB/T 1222-2016 Spring steels GB/T 3114-1994 Copper and copper alloy rectangular wires GB/T 3114-2010 Copper and copper alloy rectangular wire GB/T 3114-2023 Copper and copper alloy rectangular wire GB/T 4240-1993 Stainless steel wires GB/T 4240-2009 Stainless steel wires GB/T 4240-2019 Stainless steel wires GB/T 4340.1-1999 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 4340.1-2009 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 4340.1-2024 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 4354-1994 Hot-rolled quality carbon steel wire rods GB/T 4354-2008 Hot rolled quality carbon steel wire rods GB/T 5267.1-2002 Fasteners—Electroplated coatings GB/T 5267.1-2023 Fasteners—Electroplate coating GB/T 5267.2-2002 Fasteners—Non-electrolytically applied zinc flake coatings GB/T 5267.2-2017 Fasteners—Non-electrolytically applied zinc flake coatings GB/T 5267.2-2021 Fasteners—Non-electrolytically applied zinc flake coatings GB/T 4354-2025 Hot-rolled quality carbon steel wire rods GB/T 1222-2025 Spring steels