GB/T 798-2021 (GB/T798-2021, GBT 798-2021, GBT798-2021) & related versions
Buy with any currencies (Euro, JPY, KRW...): GB/T 798-2021 Preview this PDF: GB/T 798-2021
GB/T 798-2021: PDF in English (GBT 798-2021)
GB/T 798-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 21.060.10
CCS J 13
Replacing GB/T 798-1988
Eye Bolts
活节螺栓
ISSUED ON. DECEMBER 31, 2021
IMPLEMENTED ON. JULY 1, 2022
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 6
4 Types and Dimensions... 6
5 Direction and Position Tolerance... 9
6 Technical Conditions and References... 10
7 Designation... 11
Bibliography... 12
Foreword
This document was drafted in accordance with the rules in GB/T 1.1-2020 Directives for
Standardization - Part 1.Rules for the Structure and Drafting of Standardizing Documents.
This document serves as a replacement of GB/T 798-1988 Eye Bolts. In comparison with GB/T
798-1988, apart from structural adjustments and editorial modifications, the main technical
changes are as follows.
a) “NOTE. the variety of commodity fasteners shall be preferred” is deleted (see Chapter
1 of Version 1988);
b) The specification range and Grade-C product dimensions are modified; Grade-A and
Grade-B products are added (see Chapter 1 and Chapter 4; Chapter 1 and Chapter 3
of Version 1988);
c) The quoted standards on bolts are unified as GB/T 193, GB/T 9145 and GB/T 9146
(see Table 3; Table 2 of Version 1988);
d) The requirements for perpendicularity tolerance and symmetry tolerance are added
(see Chapter 5);
e) It is added that the universal technical conditions shall comply with GB/T 16983 (see
Table 3);
f) It is added that the technical requirements for the surface treatment of hot-dip
galvanized layer shall comply with GB/T 5267.3 (see Table 3);
g) It is added that the surface defects shall comply with GB/T 5779.1 (see Table 3).
Please be noted that certain content of this document may involve patents. The institution
issuing this document does not undertake the responsibility of identifying these patents.
This document was proposed by China Machinery Industry Federation.
This document shall be under the jurisdiction of National Technical Committee 85 on Fasteners
of Standardization Administration of China (SAC/TC 85).
The drafting organizations of this document. Ningbo Jiulong Fastener Manufacturing Co., Ltd.;
China Productivity Center for Machinery; Zhejiang Greeway Machinery Co., Ltd.; Zhejiang
Huifeng Autoparts Co., Ltd.; Wenling Luogang Machinery Co., Ltd.; Dingxi High Strength
Fastener Co., Ltd.
This document shall be interpreted by National Technical Committee on Fasteners of
Standardization Administration of China.
The issuing of the previous versions.
Eye Bolts
1 Scope
This document specifies the types, dimensions, technical conditions and designation of eye
bolts.
This document is applicable to eye bolts with the thread specification of M5 ~ M39 and the
product grade of Grade-A, Grade-B and Grade-C.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in this text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 3 Run-outs, Undercuts and Chamfers for General Purpose Metric Screw Threads
GB/T 90.1 Fasteners - Acceptance Inspection
GB/T 90.2 Fasteners - Marking and Packaging
GB/T 193 General Purpose Metric Screw Threads - General Plan
GB/T 1237 Designation System for Fasteners
GB/T 1800.1 Geometrical Product Specifications (GPS) - ISO Code System for Tolerances on
Linear Sizes - Part 1.Basis of Tolerances, Deviations and Fits
GB/T 3098.1 Mechanical Properties of Fasteners - Bolts, Screws and Studs
GB/T 3098.6 Mechanical Properties of Fasteners - Stainless Steel Bolts, Screws and Studs
GB/T 3103.1 Tolerances for Fasteners - Bolts, Screws, Studs and Nuts
GB/T 5267.1 Fasteners - Electroplated Coatings
GB/T 5267.2 Fasteners - Non-electrolytically Applied Zinc Flake Coatings
GB/T 5267.3 Fasteners - Hot Dip Galvanized Coatings
GB/T 5276 Fasteners - Bolts, Screws, Studs and Nuts - Symbols and Descriptions of
Dimensions
GB/T 5779.1 Fasteners - Surface Discontinuities - Bolts, Screws and Studs for General
Requirements
GB/T 9145 General Purpose Metric Screw Threads - Limits of Sizes for the Screw Threads of
Medium Quality and Preferable Plan
GB/T 9146 General Purpose Metric Screw Threads - Limits of Sizes for the Screw Threads of
Coarse Quality and Preferable Plan
GB/T 12362 Steel Die Forgings - Tolerance and Machining Allowance
GB/T 16938 Fasteners - General Requirements for Bolts, Screws, Studs and Nuts
3 Terms and Definitions
This document does not have terms or definitions that need to be defined.
4 Types and Dimensions
The types and dimensions of the bolts are shown in Figure 1, Table 1 and Table 2.
The symbols and descriptions of dimensions shall comply with GB/T 5276.
......
| Standard ID | GB/T 798-2021 (GB/T798-2021) | | Description (Translated English) | Eye bolts | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J13 | | Classification of International Standard | 21.060.10 | | Word Count Estimation | 9,984 | | Date of Issue | 2021-12-31 | | Date of Implementation | 2022-07-01 | | Older Standard (superseded by this standard) | GB/T 798-1988 | | Drafting Organization | Ningbo Jiulong Fastener Manufacturing Co., Ltd., China Machinery Productivity Promotion Center, Zhejiang Greeway Machinery Co., Ltd., Zhejiang Huifeng Auto Parts Co., Ltd., Wenling Screw Steel Machinery Co., Ltd., Dingxi High Strength Fastener Co., Ltd. | | Administrative Organization | National Fastener Standardization Technical Committee (SAC/TC 85) | | Regulation (derived from) | National Standard Announcement No. 17 of 2021 | | Proposing organization | China Machinery Industry Federation | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration |
|