This Standard specifies the slotted pan head screws of product grade A, with threads from M1.6 to M10 and the property classes of 4.8, 5.8, A2-50, A2-70, CU2, CU3 and AL4.
If, in special cases, other technical requirements are required, they can be selected from existing standards (for example, 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 documents contain provisions which, by reference in this Standard, constitute provisions of this Standard. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this Standard are encouraged to study whether the latest editions of these documents apply. For undated references, the latest editions apply.
GB/T 90.1 Fasteners - Acceptance Inspection (GB/T 90.1-2002, ISO 3269: 2000, IDT)
GB/T 90.2 Fasteners - Marking and Packaging
GB/T 196 General Purpose Metric Screw Threads - Basic Dimensions (GB/T 196-2003, ISO 724 1993, ISO General Purpose Metric Screw Threads - Basic Dimensions, MOD)
GB/T 197 General Purpose Metric Screw Threads - Tolerances (GB/T 197-2003, ISO 965-1: 1998, ISO General Purpose Metric Screw Threads - Tolerances - Part 1: Principles Basic Data, MOD)
GB/T 1237 Designation System for Fasteners (GB/T 1237-2000, eqv ISO 8991: 1986)
GB/T 3098.1 Mechanical Properties of Fasteners - Bolts, Screws and Studs (GB/T 3098.1-2000, idt ISO 898-1: 1999)
GB/T 3098.6 Mechanical Properties of Fasteners - Stainless-steel Bolts, Screws and Studs (GB/T 3098.6-2000, idt ISO 3506-1: 1997)
