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    22 Products

    Steel Phillips Flat Head Drilling Screws for Joining Wood to Sheet Metal

    Image of Product. With Cutting Wings. Front orientation. Wood Screws. Steel Phillips Flat Head Drilling Screws for Joining Wood to Sheet Metal, Cutting-Winged Body.
    Image of Product. Without Cutting Wings. Front orientation. Wood Screws. Steel Phillips Flat Head Drilling Screws for Joining Wood to Sheet Metal.

    With Cutting Wings

    Without Cutting

    Wings

    Join wood to sheet metal by drilling, tapping, and fastening in one go. These screws have a self-drilling tip to clear the way while their threads tap into the material. The flat head sits flush, so you won't need to worry about snags. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.
    Length is measured from the top of the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Corrosion-Resistant-Coated Steel—Resist rust at the level of stainless steel. This coating has been tested against extreme standards for wet and outdoor environments, including 1,000 hours of salt spray.
    Cutting-Winged Body—These wings create a tight hold by preventing screw threads from engaging until they reach the sheet metal. Then, the wings snap off so the screw can switch from drilling through wood to fastening into metal.
    Head
    Lg.
    Dia.
    Ht.
    Drill Point
    Size
    Drill Tip
    Lg.
    For Wood Thk.
    Range
    For Metal Thk.
    Range
    Body Type
    Flat Head
    Profile
    Approx. Threads
    per In.
    Threading
    Tapping
    Method
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    10-24
    3 1/2"0.362"0.116"No. 43/8"0.75" to 2.5"0.11" to 0.21"Cutting WingsStandard
    Fully ThreadedThread Forming1000000000000000
    4"0.362"0.116"No. 43/8"0.75" to 2.75"0.11" to 0.21"Cutting WingsStandard
    Fully ThreadedThread Forming50000000000000
     
    12-24
    2"0.412"0.132"No. 47/16"0.5" to 1.25"0.11" to 0.25"Cutting WingsStandard
    Fully ThreadedThread Forming1000000000000000
    2 1/2"0.412"0.132"No. 47/16"0.5" to 1.5"0.11" to 0.25"Cutting WingsStandard
    Fully ThreadedThread Forming1000000000000000
    3 1/2"0.412"0.132"No. 47/16"0.75" to 2.5"0.11" to 0.25"Cutting WingsStandard
    Fully ThreadedThread Forming50000000000000
    4"0.412"0.132"No. 47/16"0.75" to 2.625"0.11" to 0.25"Cutting WingsStandard
    Fully ThreadedThread Forming500000000000000
     
    1/4"-20
    2 3/4"0.472"0.153"No. 41/2"0.75" to 1.75"0.11" to 0.375"Cutting WingsStandard
    Fully ThreadedThread Forming1000000000000000
    3 1/4"0.472"0.153"No. 41/2"0.75" to 2.25"0.11" to 0.375"Cutting WingsStandard
    Fully ThreadedThread Forming500000000000000
    3 1/2"0.472"0.153"No. 41/2"0.75" to 2.5"0.11" to 0.375"Cutting WingsStandard
    Fully ThreadedThread Forming500000000000000
    3 3/4"0.472"0.153"No. 41/2"0.75" to 2.75"0.11" to 0.375"Cutting WingsStandard
    Fully ThreadedThread Forming500000000000000
     
    Corrosion-Resistant-Coated Steel
     
    No. 10
    1 1/2"0.48"0.144"No. 31/4"0.25" to 0.75"0.04" to 0.18"Standard
    16Fully ThreadedThread Forming10000000000000000
    1 13/16"0.47"0.135"No. 313/16"0.25" to 0.75"0.04" to 0.15"Standard
    16Fully ThreadedThread Forming500000000000000
     
    10-24
    3/4"0.48"0.144"No. 31/4"0.25" to 0.375"0.04" to 0.17"Standard
    Fully ThreadedThread Forming1000000000000000
    1"0.48"0.144"No. 31/4"0.25" to 0.5"0.04" to 0.17"Standard
    Fully ThreadedThread Forming10000000000000000
    1 1/4"0.48"0.144"No. 31/4"0.25" to 0.75"0.04" to 0.17"Standard
    Fully ThreadedThread Forming1000000000000000
    1 7/16"0.41"0.17"No. 31/4"0.25" to 0.75"0.06" to 0.17"Cutting WingsStandard
    Fully ThreadedThread Forming5000000000000000
     
    12-24
    1 5/8"0.476"0.25"No. 47/16"0.75" to 1.125"0.13" to 0.25"Cutting WingsStandard
    Fully ThreadedThread Forming5000000000000000
    1 3/4"0.54"0.165"No. 43/4"0.5" to 0.75"0.06" to 0.31"Cutting WingsStandard
    Fully ThreadedThread Forming5000000000000000
    2 1/4"0.438"0.16"No. 41/2"0.75" to 1.375"0.13" to 0.25"Cutting WingsStandard
    Fully ThreadedThread Forming1000000000000000
    2 3/4"0.438"0.16"No. 41/2"0.75" to 1.625"0.13" to 0.25"Cutting WingsStandard
    Fully ThreadedThread Forming1000000000000000
     
    1/4"-20
    3"0.507"0.175"No. 41/2"0.75" to 2"0.13" to 0.25"Cutting WingsStandard
    Fully ThreadedThread Forming2500000000000000
    4"0.485"0.185"No. 47/8"0.75" to 2.875"0.06" to 0.31"Cutting WingsStandard
    Partially ThreadedThread Forming100000000000000
     
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