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GB/T 1237-2000 (GBT1237-2000)

GB/T 1237-2000_English: PDF (GBT 1237-2000, GBT1237-2000)
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Standard ID GB/T 1237-2000 (GB/T1237-2000)
Description (Translated English) Designation system for fasteners
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J13
Classification of International Standard 21.060.01
Word Count Estimation 5,512
Date of Issue 2000-09-26
Date of Implementation 2001-02-01
Older Standard (superseded by this standard) GB/T 1237-1988
Quoted Standard GB/T 97.1-1985; GB/T 119.2-2000; GB/T 828-1988; GB/T 845-1985; GB/T 886-1986; GB/T 5782-2000; GB/T 6170-2000; GB/T 12618-1990; GB/T 13911-1992
Adopted Standard ISO 8991-1986; MOD
Drafting Organization Mechanical Engineering Research Institute
Administrative Organization National Standardization Technical Committee fasteners
Proposing organization National Machinery Industry Bureau
Issuing agency(ies) State Quality and Technical Supervision
Summary This standard specifies: Fasteners marking methods.

Standards related to: GB/T 1237-2000

GB/T 1237-2000
ICS 21.060.01
J 13
Replacing GB/T 1237-1988
Designation system for fasteners
(eqv ISO 8991.1986)
Issued by. State Quality and Technical Supervision
Table of Contents
Foreword ... 3 
ISO Foreword ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Designation system ... 5 
4 Simplification principle of designation ... 6 
5 Designation examples ... 7 
This Standard equivalently uses an International Standard ISO 8991.1986
Designation system for fasteners.
ISO 8991 does not specify the designation system for fastener name, standard
number, type and size, performance level and surface treatment as well as the
simplification principle of designation, which are specified in this Standard (sub-
clauses 3.2 ~ 3.4, Clause 4).
This Standard modified and supplemented the content of “designation
examples” in ISO 8991 (Clause 5).
This Standard is a revision of GB/T 1237-1988. The main modifications are as
a) moved “type” of GB/T 1237-1988 before “performance level or hardness
or material” in this Standard, merged with “other requirements for type and
size” of GB/T 1237-1988 and modified the name to “product type” (see
b) added designation positions for “thread length or rod length” or “pull-up
type” (see 3.1);
c) “-” in designation is allowed to omit (see 4.2);
d) modified and supplemented the content of “5 Designation examples”
(Clause 5).
Since the implementation of this Standard, GB/T 1237-1988 is replaced
This Standard was proposed by National Machinery Industry Bureau.
This Standard shall be under the jurisdiction of National Technical Committee
on Fasteners of Standardization Administration of China.
Main drafter of this Standard. Institute of Mechanical Science.
This Standard shall be interpreted by Secretariat of National Technical
Committee on Fasteners of Standardization Administration of China.
Designation system for fasteners
1 Scope
This Standard specifies a system for the designation of fasteners in product
2 Normative references
The following standards contain provisions which, through reference in this
Standard, constitute provisions of this Standard. At the time of publication, the
editions indicated are valid. All standards are subject to revision. The parties
who are using this Standard shall explore the possibility of using the latest
version of the following standards.
GB/T 97.1-1985, Plain washers - Normal series - Product grade A (eqv ISO
GB/T 119.2-2000, Parallel Pins, of Hardened Steel and Martensitic Stainless
Steel (eqv ISO 8734.1997)
GB/T 828-1988, Slotted pan head set setscrews with dog point
GB/T 845-1985, Cross recessed pan head tapping screws (eqv ISO
GB/T 886-1986, Rings for shoulder
GB/T 5782-2000, Hexagon Head Bolts (eqv ISO 4014.1999)
GB/T 6170-2000, Hexagon nuts, style 1 (eqv ISO 4032.1999)
GB/T 12618-1990, Mushroom head break mandrel blind rivets
GB/T 13911-1992, Expression Methods for Metallic Coating and Chemical
3 Designation system
3.1 The complete designation of the fasteners shall be expressed in the
content and order specified in Figure 1.
3.2 The designation system for fastener name, designation number, type and