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GB/T 93-2025 English PDF
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GB/T 93: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 93-2025 | English | 215 |
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Fasteners - Single coil spring lock washers - Normal type
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| GB/T 93-1987 | English | 80 |
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Single coil spring lock washers, normal type
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GB/T 93-2025: Fasteners - Single coil spring lock washers - Normal type
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT93-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 21.060.30
CCS J 13
GB/T 93-2025
Replacing GB/T 93-1987
Fasteners - Single coil spring lock washers - Normal type
Issued on: OCTOBER 31, 2025
Implemented on: FEBRUARY 01, 2026
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 Type and dimensions... 6
5 Technical requirements... 7
6 Marking and labeling... 8
7 Designation... 9
Bibliography... 10
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
“Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents”.
This document replaces GB/T 93-1987 “Single coil spring lock washers - Normal type”.
Compared with GB/T 93-1987, in addition to structural adjustments and editorial
changes, the main technical changes are as follows.
a) ADD the specification of 1.6, and MODIFY certain d dimensions (see Table 1 of
this document; Clause 3 of the 1987 edition);
b) ADD a table of technical requirements and referenced standards (see Table 2 of
this document);
c) ADD the passivation requirements for stainless steel washers (see Table 2 of this
document);
d) ADD “If other technical requirements or surface treatments are required, they
shall be agreed upon between the supplier and the purchaser.” (see Table 2 of this
document);
e) ADD the requirements for marking and labeling (see Clause 6 of this document).
Attention is drawn to the possibility that some of the elements of this document may be
the subject of patent rights. The issuing authority of this document shall not be held
responsible for identifying any or all such patent rights.
This document was proposed by China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee on
Fasteners of Standardization Administration of China (SAC/TC 85).
Drafting organizations of this document. China Machinery Productivity Promotion
Center Co., Ltd.; Hangzhou Spring Washer Co., Ltd.; Shanghai Jiyou Biaowu High-
Strength Fasteners Co., Ltd.; Nanjing Flybear Hardware Product Co., Ltd.; Hebei
Wuwei Aero & Power Technology Co., Ltd.; Taizhou Liangbiao Technology
Information Service Co., Ltd.
This document is interpreted by National Technical Committee on Fasteners of
Standardization Administration of China (SAC/TC 85).
The previous released versions replaced by this document are as follows.
- First published in 1958 as GB/T 93-1958; first revision in 1966; second revision in
1976; third revision in 1987;
Fasteners - Single coil spring lock washers - Normal type
1 Scope
This document specifies the type, dimensions, technical requirements, marking,
labeling, and designation of normal type single coil spring lock washers.
This document applies to normal type single coil spring lock washers (hereinafter
referred to as “washers”) with specifications ranging from 1.6 mm to 48 mm.
NOTE. When the single coil spring lock washers specified in this document are used in conjunction
with grade 10.9 or grade 12.9 bolts and screws, attention shall be paid to the phenomenon of spring
washer expansion.
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 90.2 Fasteners - Marking and packaging
GB/T 94.1 Specification for spring washers - Single coil lock washers
GB/T 1220 Stainless steel bars
GB/T 1222 Spring steels
GB/T 1237 Designation system for fasteners
GB/T 3099.4 Terminology of fasteners - Control, inspection, delivery, acceptance
and quality
GB/T 3114 Copper and copper alloy rectangular wire
GB/T 4240 Stainless steel wires
GB/T 4354 Hot-rolled quality carbon steel wire rods
GB/T 4357 Cold-drawn unalloyed steel wire for springs
GB/T 5267.1 Fasteners - Electroplate coating
GB/T 5267.2 Fasteners - Non-electrolytically applied zinc flake coatings
GB/T 5276 Fasteners - Bolts, screws, studs and nuts - Symbols and descriptions of
dimensions
YB/T 5319 Trapeze steel wire for spring washer
3 Terms and definitions
This document does not contain any terms or definitions that need to be defined.
4 Type and dimensions
The type of the washer shall be in accordance with Figure 1, and the dimensions shall
be in accordance with Table 1.
The symbols and descriptions of dimensions shall comply with GB/T 5276.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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