GB/T 16674.1-2016 in English

《GB/T 16674.1-2016六角法兰面螺栓 小系列》由TC85（全国紧固件标准化技术委员会）归口，主管部门为中国机械工业联合会。

1 Scope

This part of GB/T 16774 specifies the types and dimensions, specifications and designations of hexagon nuts with flange, small series.

This standard is applicable to the characteristics of hexagon bolts with flange, small series, with threads from M5 to M16, property classes 8.8, 9.8, 10.9 and A2-70, and of product grade A.

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 2-2016, ISO 4753:2011, MOD)
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 193 Purpose Metric Screw Threads — General Plan (GB/T 193-2003, ISO 261:1998, 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 3098.2-2015, ISO 898-2:2012, MOD)
GB/T 3098.6 Mechanical Properties of Fasteners — Stainless Steel Bolts, Screws and Studs (GB/T 3098.15-2014, ISO 3506-2:2012, MOD)
GB/T 3103.1 Tolerances for Fasteners — Bolts, Screws and Nuts (GB/T 3103.1-2002, idt ISO 4759-1:2000)
GB/T 5267.1 Fasteners — Electroplated Coatings (GB/T 5267.1-2002, ISO 4042:1999, Fasteners — Electroplated coatings, IDT)
GB/T 5267.2 Fasteners — Non-electrolytically Applied Zinc Flake Coatings (GB/T 5267.2-2002, ISO 10683:2000, Fasteners — Non-electrolytically Applied Zinc Flake Coatings, IDT)

Foreword II
1 Scope
2 Normative References
3 Dimensions
4 Technical Requirements and Reference Standards
5 Designation
Annex A (Normative) Gauging of Hexagon Nuts with Flange