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GB/T 5780-2016 English PDF (GBT5780-2016)

GB/T 5780-2016 English PDF (GBT5780-2016)

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GB/T 5780-2016: Hexagon head bolts -- Product grade C

This Standard specifies type sizes, technical conditions and marks of hexagon head bolts - product grade C. This Standard is applicable to hexagon head bolts of which thread sizes are M5 ~ M64, performance grades are 4.6 and 4.8, the product grade is C.
GB/T 5780-2016
GB
NATIONAL STANDARD OF
THE PEOPLE REPUBLIC OF CHINA
ICS 21.060.10
J 13
Replacing GB/T 5780-2000
Hexagon head bolts - Product grade C
(ISO 4016.2011, MOD)
??????????????? C???
ISSUED ON. FEBRUARY 24, 2016
IMPLEMENTED ON. JUNE 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative references ... 6
3 Size ... 7
4 Technical conditions and reference standards ... 15
5 Marks ... 16
Foreword
This Standard is one national standard of ?€?Hexagon nuts?€? series. This series includes.
- GB/T 27, Hexagon fit shank bolts;
- GB/T 28, Hexagon head bolts with split pin hole on shank;
- GB/T 29.1, Hexagon bolts with slot on head;
- GB/T 29.2, Cross recessed hexagon bolts with indentation;
- GB/T 31.1, Hexagon bolts with split pin hole on shank;
- GB/T 31.2, Hexagon bolts with split pin hole on shank-reduced shank - Product grade B;
- GB/T 31.3, Hexagon bolts with split pin hole on shank--Fine pitch thread- -Product grade A and B;
- GB/T 32.1, Hexagon bolts with wire hole on head--Product grade A and
B;
- GB/T 32.2, Hexagon bolts with wire holes on head-reduced shank--
Product grade B;
- GB/T 32.3, Hexagon bolts with wire holes on head-fine pitch thread--
Product grade A and B;
- GB/T 5780, Hexagon Head Bolts - Product Grade C;
- GB/T 5781, Hexagon head bolts - Full thread - Product grade C;
- GB/T 5782, Hexagon head bolts;
- GB/T 5783, Hexagon Head Bolts - Full Thread;
- GB/T 5784, Hexagon head bolts; Reduced shank; Product grades B;
- GB/T 5785, Hexagon head bolts - Fine pitch thread;
- GB/T 5786, Hexagon head bolts with fine pitch thread - Full thread.
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 5780-2000 Hexagon Head Bolts - Product Grade C. Compared with GB/T 5780-2000, the main technical changes are as follows. The drafting organizations of this Standard. Wenzhou Shun Tak Power
Accessories Co., Ltd., Zhejiang Haili Co., Ltd., Zhejiang CIQ inspection technology CO., LTD.
This Standard shall be interpreted by Secretariat of National Technical Committee on Fastener of Standardization Administration of China.
Versions of standard substituted by this Standard are.
- GB 5-1958, GB 5-1966, GB 5-1976;
- GB/T 5780-1986, GB/T 5780-2000.
Hexagon head bolts - Product grade C
1 Scope
This Standard specifies type sizes, technical conditions and marks of hexagon head bolts - product grade C.
This Standard is applicable to hexagon head bolts of which thread sizes are M5 ~ M64, performance grades are 4.6 and 4.8, the product grade is 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 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, General 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 3098.1-2010, ISO 898-1.2009, 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, IDT);
GB/T 5267.2, Fasteners - Non-electrolytically applied zinc flake coatings (GB/T 5267.2-2002, ISO 10683.2000, IDT);
GB/T 5276, Fasteners - Bolts, screws, studs and nuts - Symbols and
descriptions of dimensions (GB/T 5276-2015, ISO 225.2010, MOD);

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