GB/T 91-2000 (GB/T91-2000, GBT 91-2000, GBT91-2000) & related versions
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GB/T 91-2000
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 21.060.50
J 13
eqv ISO 1234:1997, replacing GB/T 91-1986
Split pins
开口销
ISSUED ON: SEPTEMBER 26, 2000
IMPLEMENTED ON: FEBRUARY 01, 2001
Issued by: State Bureau of Quality and Technical Supervision
Table of Contents
Foreword ... 3
ISO Foreword ... 5
1 Scope ... 6
2 Normative references ... 6
3 Dimensions ... 6
4 Technical conditions and quoted standards ... 8
5 Marking ... 9
Foreword
This Standard equivalently uses the international standard ISO 1234:1997 "Split pins".
This Standard is part of the national standard "pins" product series. The series include:
a) Split pins: GB/T 91;
b) Tapered pins: GB/T 117, GB/T 118, GB/T 877 and GB/T 881;
c) Cylindrical pins: GB/T 119.1, GB/T 119.2, GB/T 120.1, GB/T 120.2, GB/T 878
and GB/T 880;
d) Pin shaft: GB/T 882;
e) Elastic pins: GB/T 879.1, GB/T 879.2, GB/T 879.3, GB/T 879.4 and GB/T 879.5;
f) Slotted pins: GB/T 13829.1, GB/T 13829.2 and GB/T 13829.3.
ISO 1234 does not specify split pins with nominal sizes of 3, 6 and 12mm. This
Standard stipulates that by mutual agreement, [the corner note 1) in Table 1] is allowed
to be used.
ISO 1234 does not specify material designations for split pins, which are specified in
this Standard (Table 3).
ISO 1234 does not specify the offset of the gap between the legs of the split pin and the
type that allows it to be made into a split, which are specified in this Standard (Work
quality ○3 and ○4 in Table 3).
ISO 1234 does not specify the bending method, which is specified in this Standard
(Table 3).
ISO 1234 does not specify technical requirements for packaging, which is specified in
this Standard (Table 3).
ISO 1234 does not specify simplified markings. This Standard gives simplified marking
examples according to the simplified principles of GB/T 1237 (Subclause 5.2).
This Standard is a revision of GB/T 91-1986. The main modifications in this Standard
are as follows:
a) Shape of split pin end: Change the tip to the basic type. The flat end is changed to
the type that allows to be manufactured (Figure 1);
b) Added nominal sizes to 13, 16 and 20mm. Change the nominal size of 12mm to
the size allowed by the agreement between the supplier and the buyer (Table 1);
Split pins
1 Scope
This document specifies the split pins with a nominal size of 0.6~20mm.
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 90-1985, Acceptance inspection, marking and packaging of fasteners (eqv
ISO 3269:1984)
GB/T 700-1988, Carbon structural steels
GB/T 1220-1984, Stainless steel rod
GB/T 1237-2000, Designation system for fasteners (eqv ISO 8991:1986)
GB/T 5232-1985, Wrought copper-zinc alloys (brasses) - Chemical composition and
forms of wrought products
GB/T 5267-1985, Electroplated coatings on threaded fasteners
GB/T 11376-1997, Phosphate conversion coatings for metals (eqv ISO 9717:1990)
3 Dimensions
Figure 1
Allowable type
......
| Standard ID | GB/T 91-2000 (GB/T91-2000) | | Description (Translated English) | Split pins | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J13 | | Classification of International Standard | 21.060.50 | | Word Count Estimation | 7,750 | | Date of Issue | 2000-09-26 | | Date of Implementation | 2001-02-01 | | Older Standard (superseded by this standard) | GB/T 91-1986 | | Adopted Standard | ISO 1234-1997; 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: nominal specifications for 0. 6-2, mm- cotter pin. | | Standard ID | GB/T 91-1986 (GB/T91-1986) | | Description (Translated English) | Split pins | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | C60 | | Date of Issue | 1986/7/2 |
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