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GB/T 12359-2008 English PDF

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GB/T 12359-2008: Metric trapezoidal screw threads -- Limits of sizes
Status: Valid

GB/T 12359: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 12359-2008English929 Add to Cart 7 days [Need to translate] Metric trapezoidal screw threads -- Limits of sizes Valid GB/T 12359-2008
GB/T 12359-1990EnglishRFQ ASK 9 days [Need to translate] Limits of sizes for metric trapezoidal screw threads Obsolete GB/T 12359-1990

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Basic data

Standard ID GB/T 12359-2008 (GB/T12359-2008)
Description (Translated English) Metric trapezoidal screw threads -- Limits of sizes
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J04
Classification of International Standard 21.040.10
Word Count Estimation 42,486
Date of Issue 2008-07-30
Date of Implementation 2009-02-01
Older Standard (superseded by this standard) GB/T 12359-1990
Quoted Standard GB/T 5796.1-2005; GB/T 5796.2-2005; GB/T 5796.4-2005
Regulation (derived from) National Standard Approval Announcement 2008 No.12 (Total No.125)
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 size limit trapezoidal thread. Trapezoidal thread form meets GB/T 5796. 1-2005 " trapezoidal thread form " requirement. This standard applies to the nominal diameter of 8 mm to 300 mm, the tolerance zone for the 7H, 8H, 9H, 7e, 8e, 8c and 9c common trapezoidal thread.

GB/T 12359-2008: Metric trapezoidal screw threads -- Limits of sizes

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Metric trapezoidal screw threads. Limits of sizes ICS 21.040.10 J04 National Standards of People's Republic of China Replacing GB/T 12359-1990 Trapezoidal thread size limit Posted 2008-07-30 2009-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 12359-1990 "trapezoidal thread size limit." This standard compared with GB/T 12359-1990, deleted 7h external thread tolerance, thread size can according to GB/T 5796.2-2005 The provisions were part of a series of adjustments. This standard trapezoidal thread series of standards limit the size standard. Trapezoidal thread series of standards include. --- GB/T 5796.1-2005 trapezoidal screw threads - Basic type; --- GB/T 5796.2-2005 trapezoidal thread diameter and pitch series; --- GB/T 5796.3-2005 trapezoidal threaded basic dimensions; --- GB/T 5796.4-2005 trapezoidal thread tolerance; --- GB/T 12359-2008 trapezoidal thread size limit. This standard by the National Standardization Technical Committee thread (SAC/TC108) and focal points. This standard was drafted. the machine Productivity Promotion Center, Ningbo Kowloon Fastener Manufacturing Co., Ltd. The main drafters of this standard. Li Xiaobin, Xu Yong. This standard replaces the standards previously issued as follows. --- GB/T 12359-1990. Trapezoidal thread size limit

1 Scope

This standard is based on GB/T 5796.2-2005 "trapezoidal thread diameter and pitch Series" and GB/T 5796.4-2005 "trapezoidal thread Tolerance "provides the ultimate size of the trapezoidal thread. Trapezoidal thread profile in line with GB/T 5796.1-2005 "trapezoidal thread profile" of Provisions. This standard applies to the nominal diameter 8mm ~ 300mm, the tolerance band of 7H, 8H, 9H, 7e, 8e, 8c and 9c of common trapezoidal thread.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 5796.1-2005 trapezoidal thread - Part 1. tooth shape (ISO 2901.1993, ISO metrictrapezoidalscrew threads-Basicprofileandmaximummaterialprofiles, MOD) GB/T 5796.2-2005 trapezoidal thread - Part 2. The diameter of the pitch series (ISO 2902. 1977, ISO metric trapezoidalscrewthreads-Generalplan, MOD) GB/T 5796.4-2005 trapezoidal thread - Part 4. Tolerances (ISO 2903.1993, ISO metrictrapezoidalscrew threads-Tolerances, MOD) GB/T 14791 threads term (GB/T 14791-1993, neq ISO 5408. 1983)

3 Terms and Definitions

Terms and definitions GB/T 14791 stipulated apply to this standard. Size Limit 4 female 4.1 internal thread diameter tolerance zone and its position shown in Figure 1. 4.2 internal thread size limit formula Rao D4min = D + 2 c D2min = D-0.5P D2max = D2min + TD2 D1min = D-P D1max = D1min + TD1 Limit the size of the internal thread 4.3 7H. nominal diameter 8mm ~ 300mm within the limits of the size of the thread in Table 1; 8H. nominal diameter 8mm ~ 300mm within the limits of the size of the thread in Table 2; 9H. nominal diameter 8mm ~ 100mm internal thread size limits in Table 3.

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