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Carbon Steel Pan Head Sheet Metal Screws Self Tapping Threads 4.5 X 20

Categories Fastener Screws
Brand Name: VDL
Model Number: SPWS4220
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: 500 pcs each bag , 10 bags each carton with dimension 20 X 22 X 20 cm , 500 cartons to a 20 ft container
Material: Carbon Steel
Property Class: 6.8
Hardness: HRC 35
Finish: Zinc
Diameter: 4.2
Length: 20
Drive: PH
Head: PW
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    Carbon Steel Pan Head Sheet Metal Screws Self Tapping Threads 4.5 X 20

    Carbon Steel Pan Head Sheet Metal Screws Self Tapping Threads 4.5 X 20

    Self tapping threads pan wafer head .sheet metal screws

    Phillips drive head with NO.2

    Material : Harden Steel

    Sheet metal screws are made from harden steel with anneal treatment to secure metal sheets , 30 degree full tapping threads to the bottom of the head and bigger washer head diameter than shaft can secure metal sheets more tight .

    ● High tensile strength

    ● Fast drilling threads

    ● Labor efficient

    ● Torsional resistance

    ● Easy operation


    Thread diameter4.5
    Thread length20
    Head diameter13
    Head height3.2
    Core hardnessHV350
    Case hardnessHV500
    finishingBlue zinc
    Available sheet thickness3.2


    Sheet metal screws are normally made from harden steel material with grade 6.8 to 8.8 . it is available for other materials

    Carbon steel : 1018 , 1022 , 1035 , 1045 , SCM 435

    stainless steel SUS 201 , SUS303 , SUS 304 ,SUS 316 , SUS 416 ,SUS 430 and SUS 420 .

    When a sheet metal screw is used for securing sheets , the thickness of sheet metal has to be suitable for screw or sheet metal screws can not drill into sheet or be broken .

    d6# ( 3.5 )7# ( 3.9 )8# ( 4.2 )10# (4.8 )12# ( 5.5 )14# ( 6.3 )
    Sheet thickness1.85-1.953.12-3.234.68-4.84
    Hole Dia.2.953.263.454.044.765.5
    Hole tolerance±0.025±0.025±0.025±0.025±0.025±0.025

    Generally , sheet metal screws are plated in white ,blue and yellow zinc on the surface , you can choose more finishing according to requests .

    ZincBlue ,White ,Black ,Yellow5-17μmBright and smooth surface ,corrosion resistance
    NickelSilver1~3μmWear resistance ,bright appearance , anti-corrosion
    PolishingSilver0.01mm ( reference )Improving brightness of surface
    TinSilver0.13~1.27μmGood ductility ,corrosion resistance ,lower melting point ,eco-friendly ,brightness
    BrassCopper5gm~8gmGood dispersibility ,Bright appearance
    DacrometGrey4-8μmHigh corrosion resistance , No hydrogen embrittlement ,Heat resistance ,Easy to plated more ,eco-friendly
    ChromeSilver white0.25~0.5μm

    Harden surface ,Bright surface ,Heat resistance ,Wear resistance Corrosion resistance and eco-friendly


    Sheet metal screws are normally applied to metal sheets those are used for

    ▲ Metal panels

    ▲ Metal proof

    ▲ Windows

    ▲ Doors

    ▲ Barrier

    ▲ Aluminum pipes

    Features for Sheet Metal Screws

    ◆ Partial threads

    ◆ High torsinal strength

    ◆ Harden material

    ◆ Good drilling point

    ◆ Heavy Loading

    ◆ Eco-friendly

    Product Tags:

    screws and fasteners


    hardware screws

    Quality Carbon Steel Pan Head Sheet Metal Screws Self Tapping Threads 4.5 X 20 for sale
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