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DIN 6921 Hexagon Flange Bolts

DIN 6921 Hexagon Flange Bolts Featured Image
  • DIN 6921 Hexagon Flange Bolts
  • DIN 6921 Hexagon Flange Bolts
  • DIN 6921 Hexagon Flange Bolts

Short Description:

  • Product Name: DIN 6921 Hexagon Flange Bolts
  • Key Words: Bolt, DIN 6921, Hexagon Flange Bolts, hexagon bolt， Flange Bolts
  • Size: Diameter M5- M20, Length 10-500mm
  • Material: 40 Cr, all from china large state-owned factory with quality certificates
  • Strength : Grade 5.8
  • Surface Treatment: Zinc plated
  • Thread Length: Fully/half Thread
  • Customization: Customized head mark is available
  • Packing: 25kgs or 50kgs Bulk Woven Bag + Polywood Pallet
  • Application: Construction, electric power line, new energy industry, auto industry, etc.

    • Product Detail

    Product Detail

    detail

    Product parameters

    Screw Thread d M5 M6 M8 M10 M12 M14 M16 M20
    P Pitch Coarse thread 0.8 1 1.25 1.5 1.75 2 2 2.5
    Fine thread-1 / / 1 1.25 1.5 1.5 1.5 1.5
    Fine thread-2 / / / 1 1.25 / / /
    b L≤125 16 18 22 26 30 34 38 46
    125＜L≤200 / / 28 32 36 40 44 52
    L＞200 / / / / / / 57 65
    c min 1 1.1 1.2 1.5 1.8 2.1 2.4 3
    da Form A max 5.7 6.8 9.2 11.2 13.7 15.7 17.7 22.4
    Form B max 6.2 7.4 10 12.6 15.2 17.7 20.7 25.7
    dc max 11.8 14.2 18 22.3 26.6 30.5 35 43
    ds max 5 6 8 10 12 14 16 20
    min 4.82 5.82 7.78 9.78 11.73 13.73 15.73 19.67
    du max 5.5 6.6 9 11 13.5 15.5 17.5 22
    dw min 9.8 12.2 15.8 19.6 23.8 27.6 31.9 39.9
    e min 8.71 10.95 14.26 16.5 17.62 19.86 23.15 29.87
    f max 1.4 2 2 2 3 3 3 4
    k max 5.4 6.6 8.1 9.2 11.5 12.8 14.4 17.1
    k1 min 2 2.5 3.2 3.6 4.6 5.1 5.8 6.8
    r1 min 0.25 0.4 0.4 0.4 0.6 0.6 0.6 0.8
    r2 max 0.3 0.4 0.5 0.6 0.7 0.9 1 1.2
    r3 min 0.1 0.1 0.15 0.2 0.25 0.3 0.35 0.4
    r4 ≈ 3 3.4 4.3 4.3 6.4 6.4 6.4 8.5
    s max=nominal size 8 10 13 15 16 18 21 27
    min 7.78 9.78 12.73 14.73 15.73 17.73 20.67 26.67
    t max 0.15 0.2 0.25 0.3 0.35 0.45 0.5 0.65
    min 0.05 0.05 0.1 0.15 0.15 0.2 0.25 0.3

    Grade 8.8 cross recessed color zinc plated flange bolt with teeth is an integral bolt consisting of a hexagon head with a cross recessed head and a flange plate (the gasket below the hexagon and the hexagon are fixed as a whole) and a screw rod (a cylinder with external threads). It needs to be matched with the nut to fasten the parts connecting the two through holes.

     

    1. Hexagon head type:

     

    One is flat head, the other is concave head, and there are cross grooves.

     

    2. Surface color category:

     

    According to different needs, the surface is coated with white, military green, yellow and corrosion-resistant Dacromet.

     

    3. Flange type:

     

    According to the different use positions of flange bolts, the size requirements of plates are different. There are also flat bottoms and toothed plates, which play a role of anti-skid.

     

    4. According to the stress mode of connection:

     

    There are ordinary and reamed flange bolts. The flange bolts used for reaming shall match the size of the hole and be used when subjected to transverse force.

     
    Hexagon flange bolt

     

    In addition, in order to meet the needs of locking after installation, if there are holes in the rod, these holes can prevent the bolts from loosening when they are subjected to vibration. Some flange bolts have no thread, and the polished rod should be thin, called thin rod flange bolt. This kind of flange bolt is conducive to the connection under variable forces. There are special high-strength bolts on the steel structure, the head will be larger, and the size will also change.

     

    Industry use:

     

    On various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments and supplies

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