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GB/T 83-2018 English PDF

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GB/T 83-2018: Square set screws with long dog point and rounded end
Status: Valid

GB/T 83: Historical versions

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 83-2018119 Add to Cart 3 days Square set screws with long dog point and rounded end Valid
GB/T 83-1988279 Add to Cart 3 days Square set screws with long dog point and rounded end Obsolete

Similar standards

GB/T 90.1   GB/T 70.6   GB/T 91   GB/T 74   GBZ 83   

Basic data

Standard ID: GB/T 83-2018 (GB/T83-2018)
Description (Translated English): Square set screws with long dog point and rounded end
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J13
Classification of International Standard: 21.060.10
Word Count Estimation: 6,656
Date of Issue: 2018-12-28
Date of Implementation: 2019-07-01
Older Standard (superseded by this standard): GB/T 83-1988
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 83-2018: Square set screws with long dog point and rounded end

---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.
Square set screws with long dog point and rounded end ICS 21.060.10 J13 National Standards of People's Republic of China Replace GB/T 83-1988 Square head long cylindrical spherical end set screw Published on.2018-12-28 2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard is one of the national standards for the “tightening screws” series. The series includes. ---GB/T 71 slotted tapered end set screws; ---GB/T 73 slotted flat end set screws; ---GB/T 74 slotted recessed set screws; ---GB/T 75 slotted long cylindrical end set screws; ---GB/T 77 hex flat end set screws; ---GB/T 78 hexagonal taper end set screws; ---GB/T 79 hexagonal cylindrical end set screws; ---GB/T 80 hex socket end set screws; ---GB/T 83 square head long cylindrical spherical end set screws; ---GB/T 84 square head concave end set screws; ---GB/T 85 square head long cylindrical end set screws; ---GB/T 86 square head short cylindrical cone end set screws; ---GB/T 821 square head flat end set screws. This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 83-1988 "square head long cylindrical spherical end set screws". Compared with GB/T 83-1988, the main technical changes The following is as follows. --- Increase general technical conditions according to GB/T 16938 (see Table 2); ---The mechanical performance grade of stainless steel was modified to. A1-12H, A2-12H, A2-21H and A4-21H (see Table 2); --- Add non-ferrous metals CU2, CU3 (see Table 2); --- For steel screws, remove surface oxidation treatment, increase the technical requirements of untreated and non-electrolytic zinc sheet coating according to GB/T 5267.2 (see Table 2); --- For stainless steel screws, remove the untreated, add simple processing and passivation treatment technical requirements according to GB/T 5267.4 (see Table 2); --- Add "If other technical requirements or surface treatment are required, the supply and demand agreement should be provided" (see Table 2); --- Increase the surface defects of steel screws (see Table 2). This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Fastener Standardization Technical Committee (SAC/TC85). This standard is drafted by. China Machine Productivity Promotion Center. Participated in the drafting of this standard. Zhejiang Haili Co., Ltd., Zhejiang Huifeng Auto Parts Manufacturing Co., Ltd. This standard is interpreted by the National Fastener Standardization Technical Committee. The previous versions of the standards replaced by this standard are. ---GB 83-1958, GB 83-1966, GB 83-1976, GB/T 83-1988. Square head long cylindrical spherical end set screw

1 Scope

This standard specifies the type size, technical conditions and markings of the square head long spherical end set screws. This standard is applicable to square head long cylindrical spherical end set screws with thread specifications of M8~M20 and product grade A.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 90.1 fastener acceptance inspection GB/T 90.2 Fastener Marking and Packaging GB/T 193 Ordinary Thread Diameter and Pitch Series GB/T 1237 fastener marking method GB/T 2516 ordinary thread limit deviation GB/T 3098.3 Fastener mechanical properties set screws GB/T 3098.16 fastener mechanical properties stainless steel set screws GB/T 3103.1 Fastener Tolerance Bolts, Screws, Studs and Nuts GB/T 5267.1 fastener plating GB/T 5267.2 fastener non-electrolytic zinc sheet coating GB/T 5267.4 fastener surface treatment corrosion-resistant stainless steel passivation treatment GB/T 5276 fastener bolts, screws, studs and nuts size code and label GB/T 5779.1 fastener surface defects bolts, screws and studs are generally required GB/T 9145 Ordinary thread medium precision, preferred series of extreme dimensions GB/T 16938 fasteners, screws, studs and nuts - General technical requirements

3 type size

The type and dimensions of the screws are shown in Figure 1 and Table 1. The size code and label should conform to GB/T 5276.
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