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GB/T 28254-2012: Spiral pointed taps
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 28254-2012 | English | 329 |
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Spiral pointed taps
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GB/T 28254-2012
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Basic data | Standard ID | GB/T 28254-2012 (GB/T28254-2012) | | Description (Translated English) | Spiral pointed taps | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J41 | | Classification of International Standard | 25.100.50 | | Word Count Estimation | 14,184 | | Quoted Standard | GB/T 192; GB/T 193; GB/T 196; GB/T 197; GB/T 968; GB/T 969 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 1 of 2012 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the general pattern spiral point taps (high -level and ordinary level) of the type size, marking, technical requirements, marking and packaging of the basic requirements. This standard applies to processing common thread (GB/T 192, | GB/T 28254-2012: Spiral pointed taps---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS25.100.50
J41
National Standards of People's Republic of China
Lo pointed Taps
Issued on. 2012-07-01 2012-03-09 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard rule according to GB/T 1.1-2009 given draft.
The standard proposed by China Machinery Industry Federation.
This standard tool by the National Standardization Technical Committee (SAC/TC91) centralized.
This standard was drafted. Chengdu Tool Research Institute Co., Ltd., Chengdu into a tool Group Co., Ltd., Shanghai Tool Works Co., Ltd.
Harbin Measuring & Cutting Tool Group Co., Ltd.
The main drafters of this standard. Deng Zhiguang, Huang Hua new, Yu Mao Di, Xu Liyan.
Lo pointed Taps
1 Scope
This standard specifies the general shank spiral point taps (high performance level and ordinary level) type dimensions, marking, technical requirements, marking and packaging group
This requirement.
This standard applies to the processing of common screw (GB/T 192, GB/T 193, GB/T 196, GB/T 197) Universal shank spiral point tap.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 192 ordinary screw threads - Basic model
GB/T 193 Series common thread diameter and pitch
GB/T 196 common thread basic size
GB/T 197 common thread tolerance
GB/T 968 tap thread tolerance
GB/T 969 Taps technical conditions
3 Taps type and size
Figure 1 and Table 1, the provisions of 3.1 crude shank spiral point taps in Table 2.
figure 1
Table 1 coarse thread coarse shank spiral point taps in millimeters
Code
Nominal diameter
Pitch
d1 l L l1
Square head
a l2
M1 1
M1.1 1.1
M1.2 1.2
M1.4 1.4
0.25
0.3
2.5
5.5 38.5 10
twenty four
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