1 Scope
This standard specifies hexagon socket head cap screws with thread specification is M1.6- M64, property grade is 8.8, 10.9, 12.9, A2-50, A2-70, A4-50, A4-70, CU2 and CU3 as well as product grade is Grade A.
Inspection for hexagon socket see Appendix A (normative). Referred mass of the screws sees Appendix B (informative).
If any other technical requirements are required, it shall be selected from current standards (such as GB/T 196, GB/T 3106, GB/T 3098.1, GB/T 3098.6, GB/T 3098.10 and GB/T 3103.1).
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GB/T 2-1985 Fasteners--Ends of Parts with External Thread (eqv ISO 4753: 1983)
GB/T 90-1985 Acceptance Inspection, Marking and Packaging of Fasteners (eqv ISO 3269: 1984)
GB/T 196-1981 General Purpose Screw Threads-Basic Dimensions for Diameter from 1 to 600mm
GB/T 197-1981 General Purpose Screw Threads--Tolerances and Fits for Diameter from 1 to 355mm
GB/T 1237-2000 Designation System for Fasteners (eqv ISO 8991: 1986)
GB/T 3098.1-2000 Mechanical Properties of Fasteners-Bolts, Screws and Studs (idt ISO 898-1: 1999)
GB/T 3098.6-2000 Mechanical Properties of Corrosion-Resistant Stainless-Steel Fasteners-Part 1: Bolts, Screws and Studs (idt ISO 3506-1: 1997)
GB/T 3098.10-1993 Mechanical Properties of Fasteners Bolts, Screws, Studs and Nuts made of Non-Ferrous Metals (eqv ISO 8839: 1986)
GB/T 3103.1-1982 Tolerances for Fasteners-Bolts, Screws and Nuts (eqv ISO 4759-1: 1978)
GB/T 3106-1982 Bolts, Screws and Studs; Nominal Lengths and Thread Lengths for General Purpose Bolts (eqv ISO 888: 1976)
GB/T 5267-1985 Electroplated Coatings on Threaded Fasteners
GB/T 5276-1985 Fasteners; Bolts, Screws, Studs and Nuts; Symbols and Designations of Dimensions (eqv ISO 225: 1983)
GB/T 5779.1-2000 Fasteners-Surface Discontinuities-Bolts, Screws and Studs for General Requirements (idt ISO 6157-1: 1988)
GB/T 5779.3-2000 Fasteners-Surface Discontinuities-Bolts, Screws and Studs for Special Requirements (idt ISO 6157-3: 1988)
GB/T 16938-1997 Fasteners—General Requirements for Blots, Screws, Studs and Nuts (idt ISO 8992: 1986)
ISO 10683: 2000 Fasteners -- Non-Electrolytically Applied Zinc Flake Coatings
3 Dimensions
Note: dimension code and markings comply with GB/T 5276.
