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DIN 7991 Countersunk Head Screws

Categories Self Tapping Screw
Brand Name: QBH
Model Number: DIN7991
Place of Origin: CHINA
MOQ: 900kg
Payment Terms: L/C, T/T
Delivery Time: 30days
Packaging Details: 25kg Carton+900kg/Pallet
Certification: ISO9001
Price: Negotiation
Supply Ability: 200TON/MONTH
Material: Carbon steel
Size: M3-M24
Surface treatment: Plain,Zinc,Black
Grade: 6.8/8.8/10.9/12.9
Process: Cold Forming
Sample: Free Sample
Packaging: 25kg Carton+900kg/Pallet
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    DIN 7991 Countersunk Head Screws

    DIN 7991 Flat Black Zinc M3 To M24 Countersunk Head Screws


    Flat head countersunk socket cap screws DIN 7991 are not intended for high strength application. The purpose of producing them with a strength of the property class 10.9 is to increase the wear resistance of the sockets.


    Current norm: DIN EN ISO 10462
    Equivalent norms: ISO 10642; UNI 5933;


    Screw Thread
    d
    M3M4M5M6M8M10M12(M14)M16(M18)M20(M22)M24
    PPitch
    αtol.(+2)
    bL≤125mm
    125<L ≤ 200
    L>200
    dkmax=nominal size
    min
    dsmax=nominal size
    min
    emin
    kmax
    sNominal Size
    min
    max
    tmax=nominal size
    min
    0.50.70.811.251.51.75222.52.52.53
    90°90°90°90°90°90°90°90°90°90°90°60°60°
    12141618222630343842465054
    ///24283236404448525660
    /////4549535761656973
    681012162024273033363639
    5.77.649.6411.5715.5719.4823.4826.4829.4832.3835.3835.3838.38
    345681012141618202224
    2.863.824.825.827.789.7811.7313.7315.7317.7319.6721.6723.67
    2.32.873.444.585.726.869.1511.4311.4313.7213.721616
    1.72.32.83.34.45.56.577.588.513.114
    22.534568101012121414
    2.022.523.024.025.026.028.02510.02510.02512.03212.03214.03214.032
    2.12.63.14.125.146.148.17510.17510.17512.21212.21214.21214.212
    1.21.82.32.53.54.44.64.85.35.55.98.810.3
    0.951.552.052.253.24.14.34.555.25.68.449.87





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