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Countersunk: Flat Head Self-Drilling Timber Screws

  • Timber to timber
  • Flat surface after drill
  • Flat/Countersunk head use in Timber/Plaster board for home decoration or outdoor deck because it needs to generate a flat surface after screw in. Bugle/Pan/Truss/Round head screws mostly use in light sheet metal assembly.

  • DIN, IFI, ISO, ASTM, ASME or according to customer's drawing and samples.
    Material: Stainless steel: 304, 316, 410
                       Carbon steel: 1022, 1018
                       Alloy steel: 10B21, 10B33
    Gauge: #8 - #14, M4 – M6.3
    Length: 1/2’’- 10’’, 12mm – 250mm

    Self drilling screws are very easy to install, but con- tractors still encounter challenges like penetration speed or functioning problems. Therefore, it is our goal to eradicate those challenges by making self-drilling screws that are faster at drilling and are more stabilized.

    Easy to use
    SEC's Nick Point self-drilling tip contains a small indent slightly on the side of the screw tip. It has been verified through many experiments and comparisons to have a consist shorter drilling time. Furthermore, our feedback from construction staffs indicating an effortless quick drilling speed.

    Stable quality
    Our self-drilling screws have a better penetration point that is slip resistant. Besides, a single SEC self-drilling screw can be redrilled 5 times without affecting performance.

    Suitable coating
    Depending on the environment at which your self-drilling screws are applied, we are able to coat these products according to C1-C4 specifications or according to your own customized specifications.own customized specifications.

    Any customization
    The SEC self-drilling screw can be matched with any EPDM size or steel bonded washer. We can also paint the screw head to the color of your roof or wall.

    Common Applications

    Steel Truss

    Metal siding