1 Scope
This standard specifies the hexagon flange bolts with thread sizes of M5 to M20, widths across flats is heavy series, in product grade B.
2 Normative References
GB 196-81 General Purpose Metric Screw Threads — Basic Dimensions for Diameter from 1 to 600 mm
GB 197-81 General Purpose Screw Threads — Tolerances and Fits for Diameter from 1 to 355 mm
GB 2-85 Fasteners — Ends of Parts with External Thread
GB 3098.1-82 Mechanical Properties of Fasteners — Bolts, Screws and Studs
GB 3098.6-86 Mechanical Properties of Fasteners-stainless steel bolt, Bolts, Studs and nuts;
GB 3103.1-82 Tolerances for Fasteners — Bolts, Screws and Nuts
GB 5267-85 Electroplated Coatings on Threaded Fasteners
GB 5779.1-86 Fasteners — Surface Discontinuities — Bolts, Screws and Studs for General Requirements
GB 5779.3-86 Fasteners — Surface Discontinuities — Bolts, Screws and Studs for Special Requirements
GB 90-85 Acceptance Inspection, Marking and Packaging of Fasteners
3 Dimensions
