GB/T 10-1988 Flat countersunk square neck bolts

GB/T 10-2013 Countersunk head square neck bolts

GB/T 1237-2000 Designation system for fasteners GB/T 196-2003 General purpose metric screw threads—Basic dimensions GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances GB/T 2-2001 Fasteners—Ends of parts with external thread GB/T 2-2016 Fasteners—Ends of parts with external thread GB/T 3098.1-2000 Mechanical properties of fasteners—Bolts, screws and studs GB/T 3098.1-2010 Mechanical properties of fasteners—Bolts,screws and studs GB/T 3103.1-2002 Tolerances for fasteners—Bolts, screws, studs and nuts 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 90.3-2010 Fasteners—Quality assurance system GB/T 196-2025 General purpose metric screw threads—Basic dimensions