This standard specifies mushroom head square neck bolts with threads from M5 up to and including M20, of product grade C.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2 Fasteners - Ends of parts with external thread
GB/T 90.1 Fasteners - Acceptance inspection
GB/T 90.2 Fasteners - Marking and packaging
GB/T 196 General purpose metric screw threads - Basic dimensions
GB/T 197 General purpose metric screw threads - Tolerances
GB/T 1237 Designation system for fasteners
GB/T 3098.1 Mechanical properties of fasteners - Blots, screws and studs
GB/T 3098.6 Mechanical properties of fasteners - Stainless steel Bolts, screws and studs
GB/T 3103.1 Tolerances for fasteners - Bolts, screws, studs and nuts
GB/T 5267.1 Fasteners - Electroplated coatings
GB/T 5267.3 Fasteners - Hot dip galvanized coatings
GB/T 5276 Fasteners - Bolts, screws, studs and nuts - Symbols and descriptions of dimensions
GB/T 16938 Fasteners - General requirements for bolts, screws, studs and nuts
3 Dimensions
See Figure 1 and Table 1 for the type dimensions.
Symbols and designation method of dimensions shall meet the requirements of GB/T 5276.
