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GB/T 8262-1987 Round head oval neck bolts

time: 2024-08-10 10:16:40
  • GB/T 8262-1987
  • Abolished

Basic Information

  • Standard ID:

    GB/T 8262-1987

  • Standard Name:

    Round head oval neck bolts

  • Chinese Name:

    圆头椭圆颈螺栓

  • Standard category:

    National Standard (GB)

  • Date of Release:

    1987-10-01

  • Date of Implementation:

    1988-05-01

  • Date of Expiration:

    2005-10-14

standard classification number

  • Standard ICS number:

    Mechanical systems and general parts>>Fasteners>>21.060.10 Bolts, screws, studs

  • China Standard Classification Number:

    Machinery>>General Parts>>J15 Pipe Accessories

associated standards

Publication information

Other Information

  • Review date:

    2004-10-14

  • Drafting Organization:

    Xi'an Coal Mine Design and Research Institute

  • Focal point Organization:

    China Machinery Industry Federation

  • Publishing Department:

    National Bureau of Standards

  • Competent Authority:

    China Machinery Industry Federation
Introduction to standardsDescription (Translated English) / download

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Summary:

This standard applies to round head oval neck bolts used for clamp-type flexible pipe joints. GB/T 8262-1987 Round head oval neck bolts GB/T8262-1987 Standard download decompression password: www.bzxz.net
Standard contentStandard content

Some standard content:

National Standard of the People's Republic of China
Bolts, round head with ovel neck
Bolts, round head with ovel neck This standard applies to round head and ovel neck bolts for ferrule-type flexible pipe joints. 1 Structure and dimensions
The structure and dimensions shall comply with the provisions of the following figure and Table 1 and Table 2. AA
Ministry of Coal Industry of the People's Republic of China approved on September 1, 1987 UDC 621. 882. 6
:621. 643. 4
GB8262
Implementation on May 1, 1988
Basic size
Limit deviation
Basic size
Limit deviation
Basic size
Limit deviation
Basic size
Limit deviation
Basic size
Forging limit deviation
Basic size
Limit deviation
GB826287
2 Technical requirements
Limit deviation
The technical requirements for bolts shall comply with the provisions of Table 3.
GB 8262--87
3 Marking
Mechanical properties
Surface treatment
Surface defects
Acceptance and packaging
The examples of markings for selection are as follows;
GB8262--87
Product grade
GB196--81, GB197--81
GB 3098. 1-- 82bzxz.net
GB 3103. 1-- 82
GB5267--85 Galvanizing
GB 5779. 1-- 86
GB90—85
Round head oval neck bolts with coarse pitch ordinary thread, diameter = 12mm, nominal length = 80mm, mechanical property level 6.8, surface galvanized passivated, grade B should be marked as:
Bolt M12×80-6.8-galvanized passivated GB8262—87 Additional notes:
This standard is under the jurisdiction of Xi'an Coal Mine Design and Research Institute of the Ministry of Coal Industry: This standard was drafted by Xi'an Coal Mine Design and Research Institute of the Ministry of Coal Industry, and the main drafters of this standard were Shi Xiaoxuan and An Zichou.
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