This standard specifies the thread and end of self-tapping screws (screws for sheet metal) with thread sizes ST 105 to ST 9.5. GB/T 5280-2002 Thread for self-tapping screws GB/T5280-2002 Standard download decompression password: www.bzxz.net

ICS 21. 060.10
National Standard of the People's Republic of China
GT5280-2002
idt IS0 1478:1999
Thread for self-tapping screws
Tapping screws Thread
2002-12-05Issued
Shandong People's Government and
State General Administration of Quality Supervision, Inspection and Quarantine
2003-06-01Implemented
CB/52-2002
This standard is equivalent to the international standard 1501478::999 thread for self-winding screws% This standard is a revision of GB/T5280bZxz.net
1985. The main changes are: Add R type. This standard will replace GB/T5280-1985 from the date of implementation. This standard is the product of the China Machinery Industry Federation: This standard is sponsored by the National Technical Committee for Hardware Standardization, and the China Academy of Machinery Science is responsible for the production of this standard. This standard is the responsibility of the National Technical Committee for Standardization of Fasteners. Explanations (2 and Table 1)
GB/T528G-2002
ISO
S(H) The International Organization for Standardization is a worldwide joint organization of national standard groups (ISO member groups) of various countries. The formulation of international standards is usually carried out through various IS technical committees. Each member group, if interested in the project conducted by the technical committee, shall participate in the committee: governmental and non-governmental international organizations related to ISO shall participate in this project The International Standards Commission (IEC) maintains close contact with the International Electrotechnical Commission (IEC) in the field of electrical standardization. The draft international standards adopted by the technical committees are circulated to the member bodies for voting. The formal publication of international standards requires the submission of 75 member bodies for voting. The second edition of the International Standard 14:2 Fasteners Technical Committee was established to delete and supplement the first edition (150178:83). The card technology has not been adjusted. 1 Scope
Standard of the People's Republic of China
Thread for self-tapping screws
Tapping serews thread
GH/T52B0-—2002
idtIso1478.1999
Generation #GE/T5280.1955
This standard specifies the thread gauge for self-tapping stitching (metal thinning and frequency stitching) with thread and tool ends of S1.5~ST9.5, 2 sizes
State Road (ST)
13 Figure 2. 2 thread gauge
Figure 2 Screw effect end
Medium Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on December 5, 2002, and implemented on June 1, 2003. GB/T5280-2002. 1) The redundant vertices of the C-shaped end of the steel bar formed by the steel bar are allowed. The origin is a perfect circle or a perfect truncated circle. Dimensions in the table of Figure 2 (width) Screw effect specifications STI.1ST..9.ST2.2.ST2. ST2.UST3..ST3.ST3.$T4.2ST4.X ST.SIr. Sn. 5
1) It is a reference size for guidance only,
2) It is not only the length of the number of effective,
has no
35 before the frequency marking, only for estimation. 3 The marking
must be a perfect surface, but it should not be a sharp mark. The marking example of the self-drilling screw blade of the specification STS.5 has a tapping thread GB/T5281-ST3.5
, and the type of the late government is specified in the product marking, see the product mark. 2
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