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GB/T 28253-2012: Thread forming tap
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 28253-2012 | English | 399 |
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Thread forming tap
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GB/T 28253-2012
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Basic data | Standard ID | GB/T 28253-2012 (GB/T28253-2012) | | Description (Translated English) | Thread forming tap | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J41 | | Classification of International Standard | 25.100.50 | | Word Count Estimation | 17,119 | | Quoted Standard | GB/T 192; GB/T 193; GB/T 196; GB/T 197; GB/T 4267 | | 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 extrusion tap (high -level and ordinary level) of the type size, thread tolerance, technical requirements, marking and packaging of the basic requirements. This standard applies to the non-ferrous metal and low intensity black | GB/T 28253-2012: Thread forming tap---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.
Thread forming tap
ICS 25.100.50
J41
National Standards of People's Republic of China
Squeeze taps
2012-03-09 release
2012-07-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Machinery Industry Federation.
This standard is under the jurisdiction of the National Tool Standardization Technical Committee (SAC/TC91).
The drafting of this standard. Shanghai Tools Factory Co., Ltd.
The main drafters of this standard. Yu Mao Di.
Squeeze taps
1 Scope
This standard specifies the type, size, thread tolerances, technical requirements, marking and packaging of extruded tap (high performance grade and general grade)
This requirement.
This standard applies to non-ferrous metals and low-strength ferrous metal parts on the nominal diameter of 1mm ~ 27mm ordinary thread
(GB/T 192, GB/T 193, GB/T 196, GB/T 197). When the thread is machined, the dimensions of the prefabricated hole are shown in Fig
Appendix B.
The standard taper thread tolerance zone of this standard is divided into H1, H2, H3, H4, where H4 is usually a non-polished taps.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 192 General thread basic tooth type
Common thread diameter and pitch series GB/T
GB/T 196 Common thread basic dimensions
Common thread tolerances GB/T 197
GB/T 4267 Straight handle rotary tool Shank diameter and size of the drive head
3 Taps of the type and size
3.1 thick handle squeeze taps in accordance with the provisions of Figure 1 and Table 1, Table 2.
figure 1
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