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    46 Products
    About Tapping Screws
    industrial info icon

    Compare drilling, pointed, thread-forming, and thread-cutting tips to find the best choice for your material.

    Stainless Steel Flanged Hex Head Drilling Screws

    Image of Product. Front orientation. Tapping Screws. Stainless Steel Flanged Hex Head Drilling Screws.
    These corrosion-resistant screws save time and effort by drilling and fastening in one step. The hex head gives you a firm, high-torque grip with a nutdriver or socket. Screws have a flange under the head that spreads the load to prevent crushing thin metal.
    Length is measured from under the flange. Head height includes the flange.
    Galvanic-Barrier-Coated 18-8 Stainless Steel with Hardened Steel Tip—Penetrate metal and resist corrosion from contact between dissimilar metals. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. The hardened tip pierces metal for secure fastening.
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Wd.
    Ht.
    Flange
    Dia.
    Max. Drilling
    Thk.
    Tapping
    Screw Type
    Approx. Threads
    per In.
    Pkg.
    Qty.
    Pkg.
    Galvanic-Barrier-Coated 18-8 Stainless Steel with Hardened Steel Tip
     
    No. 10 Screw Size
    3/4"No. 213/64"0.313"0.16"0.4"0.106"BSD161090420A40100000
    1"No. 27/32"0.313"0.157"0.4"0.11"BSD161097246A1160000
    1 1/2"No. 213/64"0.313"0.16"0.414"0.106"BSD161090420A4050000
    2"No. 27/32"0.313"0.163"0.432"0.177"BSD161097246A11700000
     
    No. 12 Screw Size
    1"No. 21/4"0.313"0.2"0.415"0.14"BSD141090420A5110000
    1 1/2"No. 21/4"0.313"0.2"0.415"0.14"BSD141090420A5200000
    2"No. 21/4"0.313"0.2"0.415"0.14"BSD141090420A52500000
    2 1/2"No. 39/32"0.313"0.2"0.415"0.187"BSD141090420A59000000
     
    1/4" Screw Size
    1"No. 25/16"0.375"1/4"1/2"0.155"BSD141090420A61400000
    1"No. 35/16"0.375"1/4"1/2"0.21"CSD201090420A65000000
    1 1/2"No. 25/16"0.375"1/4"1/2"0.155"BSD141090420A51600000
    1 1/2"No. 35/16"0.375"1/4"1/2"0.21"CSD201090420A65500000
    1 1/2"No. 519/32"0.375"0.247"1/2"1/2"CSD20597246A1110000
    2"No. 25/16"0.375"1/4"1/2"0.155"BSD141090420A51800000
    2"No. 35/16"0.375"0.237"0.52"0.21"CSD201090420A65900000
    2"No. 545/64"0.375"0.237"0.52"1/2"CSD201090420A68100000
    2 1/2"No. 35/16"0.375"1/4"1/2"0.21"CSD20590420A66200000
    3"No. 35/16"0.375"0.237"0.52"0.21"CSD20590420A66500000
    3"No. 519/32"0.375"0.247"1/2"1/2"CSD20597246A1120000
    4"No. 35/16"0.375"0.237"0.52"0.21"CSD20590420A66700000
    4"No. 519/32"0.375"0.247"1/2"1/2"CSD20597246A11300000
    5"No. 519/32"0.375"0.247"1/2"1/2"CSD20197246A1140000
    6"No. 519/32"0.375"0.247"1/2"1/2"CSD20197246A1150000
     

    Stainless Steel Flanged Hex Head Drilling Screws for Aluminum

    Image of Product. Front orientation. Tapping Screws. Stainless Steel Flanged Hex Head Drilling Screws for Aluminum .
    In a single step, these corrosion-resistant screws drill and fasten aluminum to aluminum or metal framing. The coating on these stainless steel screws blocks galvanic corrosion between the screw and aluminum that can weaken joints. The hex head gives you a firm, high-torque grip with a nutdriver or socket. Screws have a flange under the head that spreads the load to prevent crushing thin metal.
    Length is measured from the flange. Head height includes the flange.
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Wd.
    Ht.
    Flange
    Dia.
    Max. Drilling
    Thk.
    Tapping
    Screw Type
    Approx. Threads
    per In.
    Pkg.
    Qty.
    Pkg.
    Galvanic-Barrier-Coated 18-8 Stainless Steel
     
    No. 8 Screw Size
    1/2"No. 23/16"0.25"0.141"0.348"0.098"BSD182590821A330000000
    3/4"No. 23/16"0.25"0.141"0.348"0.098"BSD182590821A35000000
     
    No. 10 Screw Size
    3/4"No. 31/4"0.313"0.151"0.414"0.15"BSD162590821A35700000
    1"No. 31/4"0.313"0.151"0.414"0.15"BSD162590821A35900000
     
    No. 12 Screw Size
    3/4"No. 39/32"0.313"0.194"0.432"0.187"BSD142590821A37400000
    1"No. 39/32"0.313"0.194"0.432"0.187"BSD142590821A37700000
    1 1/4"No. 39/32"0.313"0.194"0.432"0.187"BSD141090821A38000000
    1 1/2"No. 39/32"0.313"0.194"0.432"0.187"BSD142590821A39000000
    2"No. 39/32"0.313"0.194"0.432"0.187"BSD14590821A4200000
    2 1/2"No. 39/32"0.313"0.194"0.432"0.187"BSD14590821A4600000
    3"No. 39/32"0.313"0.194"0.432"0.187"BSD14590821A51000000
     
    1/4" Screw Size
    3/4"No. 35/16"0.375"0.24"0.52"0.21"BSD142590821A55000000
    1"No. 35/16"0.375"0.24"0.52"0.21"BSD142590821A55300000
    1"No. 45/16"0.375"0.24"0.52"0.236"CSD201090821A61000000
    1 1/2"No. 35/16"0.375"0.24"0.52"0.21"BSD141090821A55900000
    1 1/2"No. 45/16"0.375"0.24"0.52"0.236"CSD201090821A61300000
     

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

    Image of Product. With Cutting Wings. Front orientation. Cutting-Winged Body. Stainless Steel Phillips Flat Head Drilling Screws for Joining Wood to Sheet Metal, Cutting-Winged Body.

    With Cutting Wings

    Image of Product. Without Cutting Wings. Front orientation. Wood Screws. Stainless Steel Phillips Flat Head Drilling Screws for Joining Wood to Sheet Metal.

    Without Cutting

    Wings

    These rust-resistant screws join wood to sheet metal by drilling, tapping, and fastening in one go. Their self-drilling tip clears the way while their threads tap into the material. Made of stainless steel, they also won't degrade from chemically treated wood, such as ACQ-treated (arsenic-free) lumber. 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.
    Galvanic-Barrier-Coated 18-8 Stainless Steel—A protective layer stops corrosion from metal-to-metal contact. A good choice for outdoor and wet environments, these screws also won't rust.
    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.
    Body Type
    Flat Head
    Profile
    Approx. Threads
    per In.
    Threading
    Tapping
    Method
    Pkg.
    Qty.
    Pkg.
    Galvanic-Barrier-Coated 18-8 Stainless Steel
     
    No. 10
    1 1/2"0.37"0.178"No. 31/4"Cutting WingsStandard
    16Fully ThreadedThread Forming1090420A720000000
     
    No. 12
    1"0.415"0.09"No. 219/64"Undercut
    14Fully ThreadedThread Forming1090420A7600000
    1 1/2"0.415"0.09"No. 219/64"Undercut
    14Fully ThreadedThread Forming1090420A76300000
    2 13/16"0.415"0.2"No. 545/64"Cutting WingsStandard
    14Partially ThreadedThread Forming590420A7240000
     
    1/4"-20
    2 13/16"0.48"0.2"No. 545/64"Cutting WingsStandard
    Partially ThreadedThread Forming590420A72800000
    3"0.48"0.1"No. 35/16"Undercut
    Partially ThreadedThread Forming590420A76600000
    4"0.48"0.1"No. 35/16"Undercut
    Partially ThreadedThread Forming590420A76900000
     
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