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GB/T 5782-2016 PDF in English


GB/T 5782-2016 (GB/T5782-2016, GBT 5782-2016, GBT5782-2016)
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GB/T 5782-2016: PDF in English (GBT 5782-2016)

GB/T 5782-2016
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 21.060.10
J 13
GB/T 6171-2016
Replacing GB/T 5782-2000
Hexagon Head Bolts
六角头螺栓
(ISO 4014.2011, Hexagon Head Bolts – Product Grades A and B, MOD)
ISSUED ON. FEBRUARY 24, 2016
IMPLEMENTED ON. JUNE 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 6 
2 Normative References ... 6 
3 Dimensions ... 7 
4 Specifications and Reference Standards ... 17 
5 Designation ... 18 
Foreword
This Standard belongs to a national standards series “Hexagon Nuts (Part)”. The
series comprises the following.
-- GB/T 27 Hexagon Fit Shank Bolts
-- GB/T 28 Hexagon Fit Shank Bolts with Split Pin Hole on Shank
-- GB/T 29.1 Hexagon Bolts with Slot on Head
-- GB/T 29.2 Hexagon Bolts with Cross Recess on Head
-- 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 Grades A and B
-- GB/T 32.1 Hexagon bolts with wire holes on head – Product Grades 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 Grades 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 Grade 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 5782-2000, Hexagon Head Bolts. Compared with GB/T
5782-2000, the main technical differences are as follows.
-- it deletes “If, in special cases, specifications other than those listed in this
Standard are required, they can be selected from existing Standards, ... GB/T
3098.6 and GB/T 3103.1.” (Chapter 1, Edition 2000);
-- it unifies reference thread standards into GB/T 193 and GB/T 9145 (Chapter 2);
-- it specifies the surface defects only for the steel products. GB/T 5779.1 (Table 3);
-- it adds that the surface of steel bolts is as processed and deletes oxidized (Table
3);
-- it adds the technical requirements of non-electrolytically applied zinc flake
coatings of steel bolts (Table 3);
-- it adds the technical requirements of passivating treatment of stainless steel nuts
in accordance with GB/T 5267.4 (Table 3);
-- it adds the technical requirements of electroplating of non-ferrous metal bolts in
accordance with GB/T 5267.1; and
-- it is only allowed to omit Designation that the surface is as processed (5.2).
This Standard was redrafted by reference to ISO 4014.2011, Hexagon Head Bolts –
Product Grades A and B (English edition).
The technical differences between this Standard and ISO 4014.2011 and their reasons
are as follows.
-- it deletes the specification of ISO 4014, “If, in special cases, specifications other
than those listed in this International Standard are required, they can be selected
from existing International Standards, ... ISO 4753 and 4759-1” (Chapter 1),
which does not belong to the content of this Standard;
-- in the Normative References, it uses Chinese standards to replace the
international standards (Chapter 2), adds the references of GB/T 90.2 (Table 3),
GB/T 193 (Table 3), GB/T 9145 (Table 3), GB/T 5267.4 (Table 3) and GB/T 1237
(5.1), and deletes the references of ISO 724 and ISO 965-1, in order to meet
Chinese basic standards of fasteners;
-- it adds the technical requirements of passivating treatment of stainless steel bolts
(Table 3) and extend the scope of product use;
-- it adds the technical requirements of packaging (Table 3), in order to meet
Chinese basic standards of fasteners; and
-- it modifies the Example of Designation into the Simplified Example of Designation
(5.2), in order to meet the specifications of GB/T 1237.
The following editorial modifications are made in this Standard.
Hexagon Head Bolts
1 Scope
This Standard specifies the dimensions, technical requirements and designation of
hexagon head bolts.
This Standard applies to hexagon head bolts with. thread M1.6 to M64; property class
5.6, 8.8, 9.8, 10.9, A2-70, A4-70, A2-50, A4-50, CU2, CU3 and AL4; and product
grades A and B. Product grade A is used for bolts with d = 1.6 mm to 24 mm and l ≤
10d or l ≤ 150 mm (whichever is smaller); and product grade B is used for bolts with
d > 24 mm or l > 10d or l > 150 mm (whichever is smaller)
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced document (including any
amendments) applies to this Standard.
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 General Purpose Metric Screw Threads – Diameters and Pitches (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 3098.6 Mechanical Properties of Fasteners – Stainless Steel Bolts, Screws
and Studs (GB/T 3098.6-2014, ISO 3506-1.2009, MOD)
GB/T 3098.10 Mechanical Properties of Fasteners – Bolts, Screws, Studs and
Nuts Made of Non-ferrous Metals (GB/T 3098.10-1993, eqv. ISO 8839.1986)
GB/T 3103.1 Essential Oils and Aromatic Extracts – Determination of Residual
Table 3 – Technical Requirements and Reference Standards
Material Steel Stainless steel Non-ferrous metal
General technical
requirements GB/T 16938
Thread
Tolerance 6g
Standards GB/T 193 and GB/T 9145
Mechanical
properties
Property
class
d < 3mm. as agreed;
3 mm ≤ d ≤ 39 mm. 5.6, 8.8 and
10.9;
3 mm ≤ d ≤ 16 mm. 9.8;
d > 39 mm. as agreed
d ≤ 24 mm. A2-70,
A4-70;
24 mm < d ≤ 39 mm.
A2-50, A4-50;
d > 39 mm. as agreed
CU2, CU3, AL4
Standard 3 mm ≤ d ≤ 39 mm. GB/T 3098.1;
d < 3mm and d > 39 mm. as agreed
d ≤ 39 mm. GB/T
3098.6;
d > 39 mm. as agreed
GB/T 3098.10
Tolerance
Product
grade
d ≤ 24 mm and l ≤ 10d or l ≤ 150 mm (whichever is smaller). A;
d > 24 mm and l > 10d or l > 150 mm (whichever is smaller). B
Standard GB/T 3103.1
Surface discontinuity GB/T 5779.2 - -
Surface process
Not processed;
Requirements for electroplating are
specified in GB/T 5267.1.
Requirements for non-electrolytically
applied zinc flake coatings are
specified in GB/T 5267.2.
Simple process;
Requirements for
passivating treatment
are specified in GB/T
5267.4.
Simple process;
Requirements
for
electroplating
are specified in
GB/T 5267.1.
Additional requirements or other finishes or coatings shall be agreed
between the supplier and the purchaser.
Acceptance and
packaging GB/T 90.1 and GB/T 90.2
5 Designation
5.1 Designation method
The designation method is specified in GB/T 1237.
5.2 Designation example
A hexagon head bolt (product grade A) with thread M12, nominal length l = 80 mm,
property class 8.8 and no surface treatment is designated as follows.
Hexagon head bolt GB/T 5782 M12 × 80
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.