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High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts Featured Image
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts
  • High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts

High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts


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    High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts (12)
    Name Hex Bolts
    Standards DIN ISO ANC BSW JIS etc.
    Size M3-M50
    Length 15-500
    Materials Carbon Steel/Stainless Steel
    Strength level 4.8 8.8 10.9 12.9 A2-70 A4-70 A4-80
    Surface finish ZPHDGBLACKDacromet etc.
    Samples Available
    High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts (5)
    High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts (9)
    High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts (6)
    High Strength Grade 8.8 10.9 12.9 Steel DIN931 DIN933 Black Oxide Hex Bolts (3)

    Product Standards

    detail1
    Hexagon head thick shank half thread bolts M1.6-M39 DIN 931
    thread size M1.6 M2 M2.5 M3 (M3.5) M4 M5 M6 (M7) M8 M10 M12
    d
    P pitch 0.35 0.4 0.45 0.5 0.6 0.7 0.8 1 1 1.25 1.5 1.75
    b Reference L≤125 9 10 11 12 13 14 16 18 20 twenty two 26 30
    125＜L≤200 - - - - - - twenty two twenty four 26 28 32 36
    L＞200 - - - - - - - - - - 45 49
    c minimum 0.1 0.1 0.1 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15
    maximum value 0.25 0.25 0.25 0.4 0.4 0.4 0.5 0.5 0.5 0.6 0.6 0.6
    d a maximum value 2 2.6 3.1 3.6 4.1 4.7 5.7 6.8 7.8 9.2 11.2 13.7
    ds max = nominal 1.6 2 2.5 3 3.5 4 5 6 7 8 10 12
    minimum Class A 1.46 1.86 2.36 2.86 3.32 3.82 4.82 5.82 6.78 7.78 9.78 11.73
    Class B - - - - - - - - - - - -
    dw minimum Class A 2.4 3.2 4.1 4.6 5.1 5.9 6.9 8.9 9.8 11.6 15.6 17.4
    Class B - - - - - - - - - - - -
    and minimum Class A 3.41 4.32 5.45 6.01 6.58 7.66 8.79 11.05 12.12 14.38 18.9 21.1
    Class B - - - - - - - - - - - -
    k Nominal 1.1 1.4 1.7 2 2.4 2.8 3.5 4 4.8 5.3 6.4 7.5
    Class A minimum 0.98 1.28 1.58 1.88 2.28 2.68 3.35 3.85 4.65 5.15 6.22 7.32
    maximum value 1.22 1.52 1.82 2.12 2.52 2.92 3.65 4.15 4.95 5.45 6.58 7.68
    Class B minimum - - - - - - - - - - - -
    maximum value - - - - - - - - - - - -
    k 1 minimum 0.7 0.9 1.1 1.3 1.6 1.9 2.28 2.63 3.19 3.54 4.28 5.05
    r minimum 0.1 0.1 0.1 0.1 0.1 0.2 0.2 0.25 0.25 0.4 0.4 0.6
    s max = nominal 3.2 4 5 5.5 6 7 8 10 11 13 17 19
    minimum Class A 3.02 3.82 4.82 5.32 5.82 6.78 7.78 9.78 10.73 12.73 16.73 18.67
    Class B - - - - - - - - - - - -
    thread length b - - - - - - - - - - - -
    thread size (M14) M16 (M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39)
    d
    P pitch 2 2 2.5 2.5 2.5 3 3 3.5 3.5 4 4
    b Reference L≤125 34 38 42 46 50 54 60 66 72 78 84
    125＜L≤200 40 44 48 52 56 60 66 72 78 84 90
    L＞200 53 57 61 65 69 73 79 85 91 97 103
    c minimum 0.15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3
    maximum value 0.6 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1
    d a maximum value 15.7 17.7 20.2 22.4 24.4 26.4 30.4 33.4 36.4 39.4 42.4
    ds max = nominal 14 16 18 20 twenty two twenty four 27 30 33 36 39
    minimum Class A 13.73 15.73 17.73 19.67 21.67 23.67 - - - - -
    Class B - 15.57 17.57 19.48 21.48 23.48 26.48 29.48 32.38 35.38 38.38
    dw minimum Class A 20.5 22.5 25.3 28.2 30 33.6 - - - - -
    Class B - twenty two 24.8 27.7 29.5 33.2 38 42.7 46.6 51.1 55.9
    and minimum Class A 24.49 26.75 30.14 33.53 35.72 39.98 - - - - -
    Class B - 26.17 29.56 32.95 35.03 39.55 45.2 50.85 55.37 60.79 66.44
    k Nominal 8.8 10 11.5 12.5 14 15 17 18.7 twenty one 22.5 25
    Class A minimum 8.62 9.82 11.28 12.28 13.78 14.78 - - - - -
    maximum value 8.98 10.18 11.72 12.72 14.22 15.22 - - - - -
    Class B minimum - 9.71 11.15 12.15 13.65 14.65 16.65 18.28 20.58 22.08 24.58
    maximum value - 10.29 11.85 12.85 14.35 15.35 17.35 19.12 21.42 22.92 25.42
    k 1 minimum 5.96 6.8 7.8 8.5 9.6 10.3 11.7 12.8 14.4 15.5 17.2
    r minimum 0.6 0.6 0.6 0.8 0.8 0.8 1 1 1 1 1
    s max = nominal twenty two twenty four 27 30 32 36 41 46 50 55 60
    minimum Class A 21.67 23.67 26.67 29.67 31.61 35.38 - - - - -
    Class B - 23.16 26.16 29.16 31 35 40 45 49 53.8 58.8
    thread length b - - - - - - - - - - -
    detail2
    Full Thread Hexagon Head Bolts Grade A and B DIN 933
    Thread specification M1.6 M2 M2.5 M3 (M3.5) M4 M5 M6 (M7) M8 M10 M12 (M14) M16
    d
    P pitch 0.35 0.4 0.45 0.5 0.6 0.7 0.8 1 1 1.25 1.5 1.75 2 2
    a maximum value 1.05 1.2 1.35 1.5 1.8 2.1 2.4 3 3 3.75 4.5 5.25 6 6
    c minimum 0.1 0.1 0.1 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.2
    maximum value 0.25 0.25 0.25 0.4 0.4 0.4 0.5 0.5 0.5 0.6 0.6 0.6 0.6 0.8
    d a maximum value 2 2.6 3.1 3.6 4.1 4.7 5.7 6.8 7.8 9.2 11.2 13.7 15.7 17.7
    dw Class A minimum 2.4 3.2 4.1 4.6 5.1 5.9 6.9 8.9 9.6 11.6 15.6 17.4 20.5 22.5
    Class B minimum - - - - - 5.7 6.7 8.7 9.4 11.4 15.4 17.2 20.1 twenty two
    and Class A minimum 3.41 4.32 5.45 6.01 6.58 7.66 8.79 11.05 12.12 14.38 18.9 21.1 24.49 26.75
    Class B minimum - - - - - 7.5 8.63 10.89 11.94 14.2 18.72 20.88 23.91 26.17
    k Nominal 1.1 1.4 1.7 2 2.4 2.8 3.5 4 4.8 5.3 6.4 7.5 8.8 10
    Class A minimum 0.98 1.28 1.58 1.88 2.28 2.68 3.35 3.85 4.65 5.15 6.22 7.32 8.62 9.82
    maximum value 1.22 1.52 1.82 2.12 2.52 2.92 3.65 4.15 4.95 5.45 6.56 7.68 8.98 10.18
    Class B minimum - - - - - 2.6 3.26 3.76 4.56 5.06 6.11 7.21 8.51 9.71
    maximum value - - - - - 3 3.74 4.24 5.04 5.54 6.69 7.79 9.09 10.29
    k 1 minimum 0.7 0.9 1.1 1.3 1.6 1.9 2.28 2.63 3.19 3.54 4.28 5.05 5.96 6.8
    r minimum 0.1 0.1 0.1 0.1 0.1 0.2 0.2 0.25 0.25 0.4 0.4 0.6 0.6 0.6
    s max = nominal 3.2 4 5 5.5 6 7 8 10 11 13 17 19 twenty two twenty four
    Class A minimum 3.02 3.82 4.82 5.32 5.82 6.78 7.78 9.78 10.73 12.73 16.73 18.67 21.67 23.67
    Class B minimum - - - - - 6.64 7.64 9.64 10.57 12.57 16.57 18.48 21.16 23.16
    Thousand pieces of steel weight ≈kg - - - - - - - - - - - - - -
    Thread specification (M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39) M42 (M45) M48 (M52)
    d
    P pitch 2.5 2.5 2.5 3 3 3.5 3.5 4 4 4.5 4.5 5 5
    a maximum value 7.5 7.5 7.5 9 9 10.5 10.5 12 12 13.5 13.5 15 15
    c minimum 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.3 0.3 0.3
    maximum value 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1 1 1 1 1
    d a maximum value 20.2 22.4 24.4 26.4 30.4 33.4 36.4 39.4 42.4 45.6 48.6 52.6 56.6
    dw Class A minimum 25.3 28.2 30 33.6 - - - - - - - - -
    Class B minimum 24.8 27.7 29.5 33.2 38 42.7 46.5 51.1 55.9 59.9 64.7 69.4 74.2
    and Class A minimum 30.14 33.53 35.72 39.98 - - - - - - - - -
    Class B minimum 29.56 32.95 35.03 39.55 45.2 50.85 55.37 60.79 66.44 71.3 76.95 82.6 88.25
    k Nominal 11.5 12.5 14 15 17 18.7 twenty one 22.5 25 26 28 30 33
    Class A minimum 11.28 12.28 13.78 14.78 - - - - - - - - -
    maximum value 11.72 12.72 14.22 15.22 - - - - - - - - -
    Class B minimum 11.15 12.15 13.65 14.65 16.65 18.28 20.58 22.08 24.58 25.58 27.58 29.58 32.5
    maximum value 11.85 12.85 14.35 15.35 17.35 19.12 21.42 22.92 25.42 26.42 28.42 30.42 33.5
    k 1 minimum 7.8 8.5 9.6 10.3 11.7 12.8 14.4 15.5 17.2 17.9 19.3 20.9 22.8
    r minimum 0.6 0.8 0.8 0.8 1 1 1 1 1 1.2 1.2 1.6 1.6
    s max = nominal 27 30 32 36 41 46 50 55 60 65 70 75 80
    Class A minimum 26.67 29.67 31.61 35.38 - - - - - - - - -
    Class B minimum 26.15 29.16 31 35 40 45 49 53.8 58.8 63.1 68.1 73.1 78.1
    Thousand pieces of steel weight ≈kg - - - - - - - - - - - - -

    About Us

    Dabang Fasteners is a wholly-owned subsidiary of Hebei Chengyi Engineering Materials Co., Ltd.
    Our parent company has 21 years experience in fastener production and is ISO9001 ISO14001 ISO45001 SGS certified.
    We focus on providing customers with competitive products that meet user needs.
    --- Factory price, saving 15-30% of the middleman price difference.
    --- exporting to 154 countries, accumulatively serving 1800+ customers, rich export experience
    --- 5000 tons in stock, up to 3000 tons per month, average delivery time 7-20 days.
    --- After-sales team of 25 people, solve all after-sales problems

    0 Risk Commitment
    --- If the product quality and packaging problems are found after receiving the goods,
    help solve the problem and unconditionally compensate the loss within 30 days.

    Our added value
    --- In China, provide you with free factory inspection services.

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