GB/T 18230.1-2000 Hexagon bolts for high-strength structural bolting with large width across flats(thread lengths according to GB/T 3106)—Product grade C—Property classes 8.8 and 10.9

GB/T 18230.2-2000 Hexagon bolts for high-strength structural bolting with large width across flats(short thread length)—Product grade C—Property classes 8.8 and 10.9 GB/T 18230.3-2000 Hexagon nuts for high-strength structural bolting with large width across flats—Product grade B—Property classes 8 and 10 GB/T 18230.4-2000 Hexagon nuts for structural bolting with large width across flats,style 1—Product grade B—Property class 10 GB/T 18230.5-2000 Plain washers for high-strength structural bolting hardened and tempered GB/T 18230.6-2000 Hexagon nuts for structural bolting,style 1,hot-dip galvanized (oversize tapped)—Product grades A and B—Property classes 5,6 and 8 GB/T 18230.7-2000 Hexagon nuts for structural bolting-style 2,hot-dip galvanized(oversize tapped)—Product grade A—Property class 9

GB/T 90-1985 GB/T 196-1981 GB/T 197-1981 GB/T 1237-2000 Designation system for fasteners GB/T 3098.1-2000 Mechanical properties of fasteners—Bolts, screws and studs GB/T 3103.1-1982 GB/T 3106-1982 GB/T 5267-1985 GB/T 13912-1992 GB/T 16938-1997 Fasteners—General requirements for blots,screws,studs and nuts GB/T 18230.3-2000 Hexagon nuts for high-strength structural bolting with large width across flats—Product grade B—Property classes 8 and 10 GB/T 18230.4-2000 Hexagon nuts for structural bolting with large width across flats,style 1—Product grade B—Property class 10 GB/T 18230.5-2000 Plain washers for high-strength structural bolting hardened and tempered JB/T 5067-1999 Iron-based parts powder zinc plating

ISO 7411:1984