GB/T 15054.1-2018 PDF English
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| GB/T 15054.1-2018 | English | 150 |
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Miniature screw threads -- Part 1: Profiles, general plan and basic dimensions
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| GB/T 15054.1-1994 | English | 159 |
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Miniature screw threads. Profiles
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GB/T 15054.1-2018: PDF in English (GBT 15054.1-2018) GB/T 15054.1-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 21.040.30
J 04
Replacing GB/T 15054.1-1994, GB/T 15054.2-1994, GB/T 15054.3-1994
Miniature screw threads -
Part 1. Profiles, general plan and basic dimension
ISSUED ON. MAY 14, 2018
IMPLEMENTED ON. OCTOBER 01, 2018
Issued by. State Administration for Market Regulation;
Standardization Administration of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Code ... 5
5 Basic profile ... 6
6 Designed profile ... 6
7 Diameter and pitch general plan ... 7
8 Basic dimensions ... 8
Annex A (normative) Miniature screw threads with a nominal diameter range of
1mm ~ 1.4mm ... 9
Foreword
GB/T 15054 “Miniature screw threads” consists of two parts.
- Part 1. Profiles, general plan and basic dimension;
- Part 2. Tolerances and limits of size.
This Part is Part 1 of GB/T 15054.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB/T 15054.1-1994 “Miniature screw threads - Profiles”,
GB/T 15054.2-1994 “Miniature screw threads - General plan” and GB/T
15054.3-1994 “Miniature screw threads - Basic dimensions”. Compared with
GB/T 15054.1 ~ 15054.3-1994, the main technical deviations in this Part are as
follows.
- deleted the arc radius Rmax requirements of external thread designed
profile, root (see 3.2, 3.3 of GB/T 15054.1-1994);
- moved miniature screw threads of which the nominal diameter is 1mm and
above AND basic dimensions into the annex (see Annex A, Clause 3 of
GB/T 15054.2-1994 and Clause 4 of GB/T 15054.3-1994);
- deleted “thread code” (see Clause 4 of GB/T 15054.2-1994).
This Part was proposed by and shall be under the jurisdiction of National
Technical Committee on Thread of Standardization Administration of China
(SAC/TC 108).
The drafting organizations of this Part. Zhejiang Meike Tools Co., Ltd., China
Machine Productivity Promotion Center, Jiaxing Blue Arrow Instrument
Calibration Co., Ltd.
Main drafters of this Part. Chen Pengyu, Li Xiaobin, Wang Wei, Wang Yong’ai.
Versions of standard substituted by this Standard are.
- GB/T 192-1963;
- GB/T 193-1963;
- GB/T 194-1963;
- GB/T 15054.1-1994;
- GB/T 15054.2-1994;
Miniature screw threads -
Part 1. Profiles, general plan and basic dimension
1 Scope
This Part of GB/T 15054 specifies the profiles, diameters of miniature screw
threads as well as pitch general plan and basic dimensions.
This Part is applicable to miniature screw threads of general use of which the
range of nominal diameter is 0.3mm~1.4mm.
NOTE. The profile and tolerance of miniature screw threads with a nominal diameter range of
1mm~1.4mm (S) differ from those of ordinary screw threads (M).
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 14791, The terms of screw threads
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T
14791 apply.
4 Code
The following codes apply to this document.
D Basic large diameter of internal thread (nominal diameter)
D2 Basic medium diameter of internal thread
D1 Basic small diameter of internal thread
d Basic large diameter of external thread (nominal diameter)
d2 Basic medium diameter of external thread
d1 Basic small diameter of external thread (on basic profile)
d3 Root small diameter of external thread (on designed profile)
P Pitch
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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