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Stainless Steel Self Drilling Screws Hex Washer Head Metal Screw Tapping No. 14

Categories Stainless Steel Metal Screws
Brand Name: VDL
Model Number: SHS4825
Certification: ISO 9001
Place of Origin: China
MOQ: Negotiation
Price: Negotiation
Payment Terms: L/C, T/T, Western Union , Paypal
Supply Ability: 500 , 000 pcs per month
Delivery Time: 30 days
Packaging Details: 10000 pcs each carton with dimension 20 X 20 X 22 cm , 500 cartons to a 20 ft container
Material: Stainless Steel 304
Hardness: HRC 65
Diameter: #12
Length: 3/4
Drive: Ex Hex
Head: Hex
Point: Drilling
TPI: 16
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    Stainless Steel Self Drilling Screws Hex Washer Head Metal Screw Tapping No. 14

    Stainless Steel Self Drilling Screws Hex Washer Head Metal Screw Tapping No. 14

    With good stainless steel material and perfect working performances , stainless steel self drilling screws are used to various metal sheets and metal proofs in building .

    Stainless steel self drilling screws with hexagon head that are driven by a hex socket pipe or spanner for easy operation ; Normally , self drilling screws with teck points which are completely different from other screw’s points , this kind point with fast drilling performance and improve efficiency much .

    Specific Dimensions

    Self drilling screws with tapping threads based on standard DIN7504 K

    Head diameterdk12.6
    Thread lengthL3/4
    Shaft diameterd#12
    Head heightK5.5
    Hex cross widths9.5
    PitchP11 per inch
    Thread typeST

    Typical Features

    ● Good ductility

    ● High tensile strength

    ● No magnet

    ● Corrosion resistant

    ● Fine roughness


    Stainless steel self drilling screws are used for securing metal sheets , the thickness of metal sheets should be suitable for related specification of screw .

    Screw size#12
    Min. case Hardness600
    Core Hardness Hv 0.3300~400
    Min. Torsional Lb-in61
    Drill point Point #Nr. 3
    Test Plate Thickness0.062~0.068

    Physical Performance

    MaterialStainless steel
    Property class18-8
    Tensile strength σb (MPa)650
    Yield Strength σs (MPa)320
    Elongation δ5 (%)35
    Reduction of area ψ (%)45
    Density g/cm3)7.98


    Stainless steel self drilling screws are polished surface with good brightness

    Surface requestNo burrs and bright


    1 , Choose a special electric driller for self drilling screws

    2 , Adjust locator in electric driller to a proper posiztion for leading screws are to be driven to right position

    3 , Check drilling rate of driller

    Screw sizeDrilling rate RPM
    3.5 ( 6 # )1500 - 2500
    3.9 ( 7 # )1500 – 2500
    4.2 ( 8 # )1500 - 2500
    4.8 ( 10 # )1500 - 2500
    5.5 ( 12 # )1000 – 1800
    6.3 ( 14 # )1000 - 1800

    4 , Choose attached screwdriver bit and drive screws into metal sheets .

    If you take a single electric driller operated by hand , please note

    ① Don’t put more joint on locating device in electric driller
    ② Make sure the sheet thickness is suitable for the length of screw , or screws will be broken easily .
    ③ Don’t put more RMP that overs max RMP of electric driller , or the point of screws will be melt down .
    ④ Don’t choose conflicting model for screws .


    Stainless steel self drilling screws are normally used to metal sheets

    ▲ Metal sheets on roof
    ▲ Metal wall sheet
    ▲ Fence
    ▲ Fender
    ▲ Furniture
    ▲ Brige
    ▲ Highway equipments


    ▲ Wide versatility
    ▲ Top material
    ▲ Quick installation
    ▲ Convenient operation
    ▲ Simple deign
    ▲ Recylable
    ▲ Eco-friendly
    ▲ Standard Sizes

    Tips for installations

    ★ A screw gun with a depth sensitive nose piece that be used to install drillers ,the screwgun should be a min of 4 amps and a RPM range from 0 to 2500c
    ★ Adjust the screw gun nose piece to properly set the fastener
    ★ Damaged bit tips should be replaced
    ★ The fastener is fully setted when the head is flush with the work surface
    ★ The fastener have to penetrate beyond the metal structure a min of 3 picthes of threads
    ★ Put 13 kgs or so force on screw gun and keep force direction is same as the centr of drilling point

    Quality Stainless Steel Self Drilling Screws Hex Washer Head Metal Screw Tapping No. 14 for sale
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