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GB/T 6176-2016 English PDF (GBT6176-2016)

GB/T 6176-2016 English PDF (GBT6176-2016)

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GB/T 6176-2016: Hexagon nuts, style2 -- Fine pitch thread

This Standard specifies type sizes, technical conditions and marks of hexagon nuts, style 2 - fine pitch thread.
GB/T 6176-2016
GB
NATIONAL STANDARD OF
THE PEOPLE REPUBLIC OF CHINA
ICS 21.060.20
J 13
Replacing GB/T 6176-2000
Hexagon nuts, style 2 - Fine pitch thread
(ISO 8674.2012, Hexagon high nuts (style 2) with metric
fine pitch thread - Product grades A and B, MOD)
2??????????????? ??????
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 ... 5
2 Normative references ... 5
3 Size ... 6
4 Technical conditions and reference standards ... 7
5 Marks ... 8
Foreword
GB/T 6176 is one national standard of ?€?Hexagon nuts (part)?€? series. This series includes.
- GB/T 41, Hexagon nuts, style 1, grade C;
- GB/T 6170, Hexagon nuts, style 1;
- GB/T 6171, Hexagon Nuts, Style 1-Fine Pitch Thread;
- GB/T 6172.1, Hexagon thin nuts (chamfered);
- GB/T 6173, Hexagon thin nuts (chamfered) with fin pitch thread;
- GB/T 6174, Hexagon thin nuts - unchamfered;
- GB/T 6175, Hexagon nuts, style 2;
- GB/T 6176, Hexagon nuts, style 2, with fine pitch thread;
- GB/T 6177.1, Hexagon nus wit flange, style 2;
- GB/T 6177.2, Hexagon nuts with flange, style 2 - Fine pitch thread.
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 6176-2000 Hexagon nuts, style 2 - Fine pitch thread. Compared with GB/T 6176-2000, the main technical changes are as follows.
- deleted ?€?If other technical requirements are required, ... select among (such as GB/T 3098.10 and GB/T 3103.3)?€? (Clause 1 of Edition 2000);
- unified reference thread standards as GB/T 193, GB/T 9145 (Clause 2); - added QT - Quenching and tempering in mechanical properties of nuts
(Table 3);
- deleted steel nut surface oxidation; added. not treated (Table 3);
- in marks, the surface treatment shall be only allowed to omit. the surface is not treated, instead of surface oxidation (5.2).
This Standard is modified on the basis of adopting ISO 8674.2012 Hexagon high nuts (style 2) with metric fine pitch thread - Product grades A and B (English version).
Hexagon nuts, style 2 - Fine pitch thread
1 Scope
This Standard specifies type sizes, technical conditions and marks of hexagon nuts, style 2 - fine pitch thread.
This Standard is applicable to hexagon nuts, style 2 - fine pitch thread of which thread nominal diameters are D - 8 mm ~ 36 mm, performance grades are 8, 10 and 12, the product grades are A and B. Grade A is used for nuts of which D ??? 16 mm; Grade B is used for nuts of which D > 16 mm.
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 3098.2, Mechanical properties of fasteners - Nuts (GB/T 3098.2-2015, ISO 898-2.2012, 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, 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

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