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GB/T 5285-2017 English PDF (GB/T 5285-1985)

GB/T 5285-2017_English: PDF (GB/T5285-2017)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 5285-2017English90 Add to Cart 0--9 seconds. Auto-delivery Hexagon head tapping screws Valid GB/T 5285-2017
GB/T 5285-1985English159 Add to Cart 2 days [Need to translate] Hexagon head tapping screws Obsolete GB/T 5285-1985


BASIC DATA
Standard ID GB/T 5285-2017 (GB/T5285-2017)
Description (Translated English) Hexagon head tapping screws
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J13
Classification of International Standard 21.060.10
Word Count Estimation 6,647
Date of Issue 2017-07-12
Date of Implementation 2018-02-01
Drafting Organization China Machine Productivity Promotion Center
Administrative Organization National Fastener Standardization Technical Committee (SAC / TC 85)
Proposing organization China Machinery Industry Federation
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee

BASIC DATA
Standard ID GB/T 5285-1985 (GB/T5285-1985)
Description (Translated English) Hexagon head tapping screws
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J13
Classification of International Standard 21.060.10
Word Count Estimation 3,351
Date of Issue 1985/8/1
Date of Implementation 1986/6/1
Quoted Standard GB/T 5280-1985; GB 3098.5-1985; GB/T 3103.1-1982; GB/T 5267-1985; GB/T 90-1985
Adopted Standard ISO 1479-1983, EQV
Drafting Organization Standardization Institute of the Ministry of Machinery Industry
Administrative Organization Standardization Institute of the Ministry of Machinery Industry
Summary This standard specifies the thread size for the ST 2. 2 ~ ST 9. 5 hex head self tapping screws. This standard adopts the International Standard ISO 1479-1983 "hex head self tapping screws. "


GB/T 5285-2017 Hexagon head tapping screws ICS 21.060.10 J13 National Standards of People's Republic of China Replace GB/T 5285-1985 Hexagon head tapping screw (ISO 1479.2011, MOD) Released on.2017-07-12 2018-02-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration issued Foreword This standard is one of the national standards for the "self-tapping screws" series. The series includes. ---GB/T 845 cross recessed pan head self-tapping screws; ---GB/T 846 cross recessed countersunk head tapping screws; ---GB/T 847 cross recessed countersunk head self-tapping screws; ---GB/T 2670.1 Hexagonal flower-shaped pan head tapping screw; ---GB/T 2670.2 Hexagonal flower-shaped countersunk head tapping screws; ---GB/T 2670.3 Hexagonal flower-shaped semi-sunk head self-tapping screws; ---GB/T 5282 slotted pan head tapping screws; ---GB/T 5283 slotted countersunk head tapping screw; ---GB/T 5284 slotted semi-recessed head self-tapping screws; ---GB/T 5285 Hex head self-tapping screws; ---GB/T 9456 cross recessed hex head self-tapping screws; ---GB/T 13806.2 precision mechanical fasteners cross recessed self-tapping screws scraping end; ---GB/T 16824.1 hexagonal flange self-tapping screws; ---GB/T 16824.2 Hex flange face self-tapping screws. This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 5285-1985 "hexagon head self-tapping screws", compared with GB/T 5285-1985, the main technical changes are as follows. --- Increase the R type (see Figure 1 and Table 1); --- Increase general technical conditions according to GB/T 16938 (see Table 2); --- For steel screws, increase the technical requirements for untreated and non-electrolytic zinc sheet coating according to GB/T 5267.2 (see Table 2); ---Add stainless steel screw products and technical requirements (see Table 2); --- Add "If other technical requirements or surface treatment are required, the supply and demand agreement should be provided" (see Table 2). This standard uses the redrafting method to modify the use of ISO 1479.2011 "hexagon head self-tapping screws." The technical differences with ISO 1479.2011 and their reasons are as follows. --- In the normative reference documents, replace the international standards with Chinese standards (see Chapter 2), increase the reference to GB/T 90.2 (see Table 2) and GB/T 1237 (see 5.1) to meet the basic standards of fasteners in China. --- Increase packaging technical requirements (see Table 2) to meet the basic standards of fasteners in China. --- Modify the tag example as a simplified tag example (see 5.2) to comply with the provisions of GB/T 1237. 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. the quality supervision and testing center for general parts and components of the machinery industry. This standard is interpreted by the National Fastener Standardization Technical Committee. The previous versions of the standards replaced by this standard are. ---GB/T 5285-1976, GB/T 5285-1985. Hexagon head tapping screw 1 Scope This standard specifies the type size, technical conditions and markings of the hexagonal head tapping screws. This standard applies to hex head self-tapping screws with thread specifications ST2.2~ST9.5 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 90.1-2002, idtISO 3269.2000) GB/T 90.2 fastener packaging and signs GB/T 1237 fastener marking method (GB/T 1237-2000, eqvISO 8991.1986) GB/T 3098.5 Self-tapping screws for mechanical properties of fasteners (GB/T 3098.5-2016, ISO 2702.2011, MOD) GB/T 3098.21 fastener mechanical properties stainless steel self-tapping screws (GB/T 3098.21-2014, ISO 3506-4.2009, MOD) GB/T 3103.1 fastener tolerance bolts, screws, studs and nuts (GB/T 3103.1-2002, idtISO 4759-1.2000) GB/T 5267.1 Fastener Plating (GB/T 5267.1-2002, ISO 4042.1999, IDT) GB/T 5267.2 fastener non-electrolytic zinc sheet coating (GB/T 5267.2-2002, ISO 10683.2000, IDT) GB/T 5267.4 fastener surface treatment corrosion-resistant stainless steel passivation treatment (GB/T 5267.4-2009, ISO 16048.2003, IDT) GB/T 5276 fastener bolts, screws, studs and nuts size code and label (GB/T 5276-2015, ISO 225. 2010, MOD) GB/T 5280 self-tapping screw thread (GB/T 5280-2002, idtISO 1478.1999) General technical requirements for GB/T 16938 fastener bolts, screws, studs and nuts (GB/T 16938-2008, ISO 8992. 2005, IDT) 3 type size The dimensions of the self-tapping screws are shown in Figure 1 and Table 1. The size code and label should conform to GB/T 5276. a) Type C b) Type F c) R type a The pocket type is chosen by the manufacturer. b Dimension a shall be measured at the small diameter of the first buckle full thread. figure 1 Table 1 Dimensions are in millimeters Thread size ST2.2 ST2.9 ST3.5 ST4.2 ST4.8 ST5.5 ST6.3 ST8 ST9.5 Pa 0.8 1.1 1.3 1.4 1.6 1.8 1.8 2.1 2.1 a max 0.8 1.1 1.3 1.4 1.6 1.8 1.8 2.1 2.1 Da max 2.8 3.5 4.1 4.9 5.5 6.3 7.1 9.2 10.7 Max 3.20 5.00 5.50 7.00 8.00 8.00 10.00 13.00 16.00 Min 3.02 4.82 5.32 6.78 7.78 7.78 9.78 12.73 15.73 e min 3.38 5.40 5.96 7.59 8.71 8.71 10.95 14.26 17.62 Max 1.6 2.3 2.6 3.0 3.8 4.1 4.7 6.0 7.5 Min 1.3 2.0 2.3 2.6 3.3 3.6 4.1 5.2 6.5 Kw min 0.9 1.4 1.6 1.8 2.3 2.5 2.9 3.6 4.5 r min 0.10 0.10 0.10 0.20 0.20 0.25 0.25 0.40 0.40 reference Type C 2.0 2.6 3.2 3.7 4.3 5.0 6.0 7.5 8.0 F type 1.6 2.1 2.5 2.8 3.2 3.6 3.6 4.2 4.2 Type R - - 2.7 3.2 3.6 4.3 5.0 6.3 - Lb Nominal Type C and Type R F Min max min max 4.5 3.7 5.3 3.7 4.5 - - - - - - - - 6.5 5.7 7.3 5.7 6.5 - - - - - - 9.5 8.7 10.3 8.7 9.5 - - - - 13 12.2 13.8 12.2 13.0 - 16 15.2 16.8 15.2 16.0 19 18.2 19.8 18.2 19.0 22 21.2 22.8 20.7 22.0 25 24.2 25.8 23.7 25.0 32 30.7 33.3 30.7 32.0 38 36.7 39.3 36.7 38.0 45 43.7 46.3 43.5 45.0 50 48.7 51.3 48.5 50.0 Note. The solid line between the steps is the preferred length range. a P---pitch. b Length specifications with the “-” mark cannot be made. 4 Technical conditions and reference standards The technical conditions and reference standards are shown in Table 2. Table 2 Technical conditions and reference standards Material steel stainless steel General technical conditions GB/T 16938 Thread GB/T 5280 Mechanical behavior grade standard GB/T 3098.5 A2-20H, A4-20H, A5-20H GB/T 3098.21 tolerance Product grade standard GB/T 3103.1 Surface treatment Not treated; Electroplating technology requirements are in accordance with GB/T 5267.1; Non-electrolytic zinc sheet coating technology requirements according to GB/T 5267.2 Simple processing Passivation treatment technology requirements GB/T 5267.4 For other technical requirements or surface treatment, the supply and demand agreement Acceptance and packaging GB/T 90.1, GB/T 90.2 5 mark 5.1 Marking method The marking method is specified in GB/T 1237. 5.2 Tag example Hex heads with thread size ST3.5, nominal length l=16mm, steel, untreated surface, end C type, product grade A Self-tapping screw marking. Self-tapping screws GB/T 5285 ST3.5×16 T/ B ......

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