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    160 Products
    About Tapping Screws
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    Compare drilling, pointed, thread-forming, and thread-cutting tips to find the best choice for your material.

    Stainless Steel Square Drive Rounded Head Drilling Screws

    Image of Product. Front orientation. Tapping Screws. Stainless Steel Square Drive Rounded Head Drilling Screws.
    Drill and fasten in one step with screws that prevent drivers from slipping out. Also known as Robertson drive, the square recess withstands more torque than a Phillips drive. These screws resist corrosion and have a rounded head for a finished look.
    Length is measured from under the head.
    410 Stainless Steel—Tougher and more wear resistant than other stainless steel screws but less corrosion resistant.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Dia.
    Ht.
    Max. Drilling
    Thk.
    Tapping
    Screw Type
    Drive
    Size
    Approx. Threads
    per In.
    Pkg.
    Qty.
    Pkg.
    410 Stainless Steel
     
    No. 6 Screw Size
    3/8"No. 17/64"0.27"0.097"0.035"BSDNo. 12010090203A20500000
    1/2"No. 29/64"0.27"0.097"0.09"BSDNo. 12010090203A2500000
    5/8"No. 29/64"0.27"0.097"0.09"BSDNo. 12010090203A5100000
    3/4"No. 29/64"0.27"0.097"0.09"BSDNo. 12010090203A2530000
    1"No. 29/64"0.27"0.097"0.09"BSDNo. 12010090203A51100000
    1 1/4"No. 29/64"0.27"0.097"0.09"BSDNo. 12010090203A51200000
     
    No. 8 Screw Size
    3/8"No. 21/8"0.322"0.115"0.035"BSDNo. 21810090203A5130000
    1/2"No. 23/16"0.322"0.115"0.098"BSDNo. 21810090203A3100000
    5/8"No. 23/16"0.322"0.115"0.098"BSDNo. 21810090203A51400000
    3/4"No. 23/16"0.322"0.115"0.098"BSDNo. 2185090203A3130000
    1"No. 23/16"0.322"0.115"0.098"BSDNo. 2185090203A3160000
    1 1/4"No. 23/16"0.322"0.115"0.098"BSDNo. 2185090203A5150000
    1 1/2"No. 23/16"0.322"0.115"0.098"BSDNo. 2185090203A5160000
    2"No. 23/16"0.322"0.115"0.098"BSDNo. 2182590203A5170000
     
    No. 10 Screw Size
    1/2"No. 213/64"0.373"0.133"0.106"BSDNo. 2165090203A41200000
    5/8"No. 31/4"0.373"0.133"0.15"BSDNo. 2165090203A51800000
    3/4"No. 31/4"0.373"0.133"0.15"BSDNo. 2165090203A41500000
    1"No. 31/4"0.373"0.133"0.15"BSDNo. 2165090203A41800000
    1 1/4"No. 31/4"0.373"0.133"0.15"BSDNo. 2162590203A5190000
    1 1/2"No. 31/4"0.373"0.133"0.15"BSDNo. 2162590203A5200000
    2"No. 31/4"0.373"0.133"0.15"BSDNo. 2162590203A5210000
    2 1/2"No. 31/4"0.373"0.133"0.15"BSDNo. 2161090203A5220000
    3"No. 31/4"0.373"0.133"0.15"BSDNo. 2161090203A5230000
     
    No. 12 Screw Size
    3/4"No. 39/32"0.425"0.151"0.187"BSDNo. 3142590203A2400000
    1"No. 39/32"0.425"0.151"0.187"BSDNo. 3142590203A5250000
    1 1/4"No. 39/32"0.425"0.151"0.187"BSDNo. 3142590203A5260000
    1 1/2"No. 39/32"0.425"0.151"0.187"BSDNo. 3141090203A5270000
    2"No. 39/32"0.425"0.151"0.187"BSDNo. 3141090203A5280000
     
    No. 14 Screw Size
    3/4"No. 35/16"0.492"0.175"0.21"BSDNo. 3141090203A5290000
    1"No. 35/16"0.492"0.175"0.21"BSDNo. 3141090203A5300000
    1 1/4"No. 35/16"0.492"0.175"0.21"BSDNo. 3141090203A5310000
    1 1/2"No. 35/16"0.492"0.175"0.21"BSDNo. 3141090203A5320000
    2"No. 35/16"0.492"0.175"0.21"BSDNo. 3141090203A5330000
     
    18-8 Stainless Steel
     
    No. 6 Screw Size
    3/8"No. 29/64"0.27"0.097"0.09"No. 1202590203A61100000
    1/2"No. 29/64"0.27"0.097"0.09"No. 1202590203A61200000
     
    No. 8 Screw Size
    3/8"No. 23/16"0.322"0.115"0.1"No. 2182590203A61300000
    1/2"No. 23/16"0.322"0.115"0.1"No. 2182590203A61400000
    5/8"No. 23/16"0.322"0.115"0.1"No. 2182590203A61500000
    3/4"No. 23/16"0.322"0.115"0.1"No. 2182590203A61600000
    1"No. 23/16"0.322"0.115"0.1"No. 2181090203A61700000
    1 1/4"No. 23/16"0.322"0.115"0.1"No. 2181090203A61800000
    1 1/2"No. 23/16"0.322"0.115"0.1"No. 2181090203A61900000
    2"No. 23/16"0.322"0.115"0.1"No. 2181090203A62100000
    2 1/2"No. 23/16"0.322"0.115"0.1"No. 2181090203A62200000
     
    No. 10 Screw Size
    1/2"No. 213/64"0.373"0.133"0.11"No. 2161090203A62300000
    5/8"No. 31/4"0.373"0.133"0.175"No. 2161090203A62400000
    3/4"No. 31/4"0.373"0.133"0.175"No. 2161090203A62500000
    1"No. 31/4"0.373"0.137"0.15"No. 2162590203A11200000
    1 1/2"No. 31/4"0.373"0.137"0.15"No. 2162590203A11800000
    1 3/4"No. 31/4"0.373"0.133"0.175"No. 216590203A62600000
    2"No. 31/4"0.373"0.137"0.15"No. 2162590203A12100000
    2 1/2"No. 31/4"0.373"0.133"0.175"No. 216590203A62700000
    3"No. 31/4"0.373"0.133"0.175"No. 216590203A62800000
     
    No. 12 Screw Size
    3/4"No. 39/32"0.425"0.151"0.21"No. 3141090203A62900000
    1"No. 39/32"0.425"0.151"0.21"No. 3141090203A63100000
    1 1/4"No. 39/32"0.425"0.151"0.21"No. 314590203A63200000
    1 1/2"No. 39/32"0.425"0.151"0.21"No. 314590203A63300000
    2"No. 39/32"0.425"0.151"0.21"No. 314590203A63400000
     
    1/4" Screw Size
    3/4"No. 35/16"0.492"0.175"0.22"No. 314590203A63500000
    1"No. 35/16"0.492"0.175"0.22"No. 314590203A63600000
    1 1/4"No. 35/16"0.492"0.175"0.22"No. 314590203A63700000
    1 1/2"No. 35/16"0.492"0.175"0.22"No. 314190203A6380000
    2"No. 35/16"0.492"0.175"0.22"No. 314190203A6390000
     

    Steel Phillips/Square Drive Pancake Head Drilling Screws

    Image of Product. Front orientation. Tapping Screws. Steel Phillips/Square Drive Pancake Head Drilling Screws.
    Secure framing to metal up to 3/16" thick where clearance is too tight for other rounded-head screws. Also known as panel clip screws, these have a slim pancake head that creates a nearly flush finish. The head's flat underside makes more contact for a better hold on thin materials, such as sheet metal and plywood. Drill and fasten screws in one step using a Phillips driver. For more torque, you can also use a square driver.
    Length is measured from under the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Dia.
    Ht.
    Max. Drilling
    Thk.
    Tapping
    Screw Type
    Drive
    Size
    Approx. Threads
    per In.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 10 Screw Size
    1"No. 31/4"0.438"0.094"0.15"BSDNo. 2165094090A100000000
     
    No. 12 Screw Size
    1"No. 39/32"0.438"0.094"0.187"BSDNo. 2145094090A20000000
     

    Serrated Stainless Steel Square-Drive Flat Head Wood Screws

    Image of Product. Front orientation. Wood Screws. Serrated Stainless Steel Square-Drive Flat Head Wood Screws.
    Lock in for a tighter hold than typical wood screws. Serrations beneath the flat head dig into wood to secure these screws into place. Made of stainless steel, they won't degrade from moisture or chemically treated wood, such as ACQ-treated (arsenic-free) lumber. Also known as a Robertson drive, the square drive handles more torque than slotted and Phillips drives, so it's less likely to slip.
    The screw drill tip acts as a built-in pilot, though pilot holes are still recommended near edges to avoid splitting. Length is measured from the top of the head.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Head
    Lg.
    Dia.
    Ht.
    Drill Bit
    Size
    Countersink
    Angle
    Flat Head
    Profile
    Approx. Threads
    per In.
    Threading
    Tapping
    Method
    Tapping
    Screw Type
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    No. 6
    1 5/8"0.279"0.083"32 Ga.
    90°
    Standard
    9Partially ThreadedThread Cutting172598643A65100000
     
    No. 8
    1 1/4"0.311"0.088"29 Ga.
    90°
    Standard
    8Partially ThreadedThread Cutting172598643A6520000
    1 1/2"0.311"0.088"29 Ga.
    90°
    Standard
    8Partially ThreadedThread Cutting172598643A65300000
    1 5/8"0.311"0.088"3/32"
    90°
    Standard
    15Partially ThreadedThread Cutting172598643A3500000
    1 3/4"0.311"0.088"29 Ga.
    90°
    Standard
    8Partially ThreadedThread Cutting172598643A65400000
    2"0.311"0.088"3/32"
    90°
    Standard
    15Partially ThreadedThread Cutting172598643A37000000
    2 1/2"0.311"0.088"3/32"
    90°
    Standard
    15Partially ThreadedThread Cutting171098643A3900000
    3"0.311"0.088"29 Ga.
    90°
    Standard
    8Partially ThreadedThread Cutting171098643A6550000
     
    No. 10
    2 1/2"0.378"0.11"7/64"
    90°
    Standard
    13Partially ThreadedThread Cutting171098643A6100000
    3"0.378"0.11"7/64"
    90°
    Standard
    13Partially ThreadedThread Cutting171098643A6400000
    3 1/2"0.378"0.11"24 Ga.
    90°
    Standard
    8Partially ThreadedThread Cutting171098643A65600000
    4"0.378"0.11"24 Ga.
    90°
    Standard
    8Partially ThreadedThread Cutting17598643A6570000
     

    Stainless Steel Square-Drive Flat Head Screws for Wood and Composite Wood

    Image of Product. Front orientation. Wood Screws. Stainless Steel Square-Drive Flat Head Screws for Wood and Composite Wood.
    Fasten decking and fencing outdoors with screws that won't rust. They're often used with chemically treated wood, such as ACQ-treated (arsenic-free) lumber. Also known as deck screws, their trumpet shape spreads pressure to prevent splitting, while the flat head limits snags. The square drive handles more torque than slotted and Phillips drives.
    The screw drill tip acts as a built-in pilot, though pilot holes are still recommended near edges to avoid splitting. Length is measured from the top of the head.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    316 Stainless Steel—Superior to 18-8 stainless steel, these screws won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Head
    Lg.
    Dia.
    Ht.
    Drill Bit
    Size
    Flat Head
    Profile
    Approx. Threads
    per In.
    Threading
    Tapping
    Method
    Tapping
    Screw Type
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    No. 6
    5/8"0.344"0.197"1/16"
    Standard
    9Partially ThreadedThread Cutting1710090000A143000000
    3/4"0.344"0.197"1/16"
    Standard
    9Partially ThreadedThread Cutting1710090000A14700000
    1"0.344"0.197"1/16"
    Standard
    9Partially ThreadedThread Cutting1710090000A15100000
    1 1/4"0.344"0.197"1/16"
    Standard
    9Partially ThreadedThread Cutting1710090000A15500000
    1 1/2"0.344"0.197"1/16"
    Standard
    18Partially ThreadedThread Cutting1710090000A15700000
    1 5/8"0.344"0.197"1/16"
    Standard
    9Partially ThreadedThread Cutting1710090000A15900000
    2"0.344"0.197"1/16"
    Standard
    18Partially ThreadedThread Cutting1710090000A16100000
     
    No. 7
    1"0.23"0.125"1/16"
    Narrow
    10Partially ThreadedThread Cutting175091530A77100000
    1 5/8"0.23"0.125"1/16"
    Narrow
    10Partially ThreadedThread Cutting175091530A77400000
    2"0.23"0.125"1/16"
    Narrow
    10Partially ThreadedThread Cutting175091530A77600000
    2 1/4"0.23"0.125"1/16"
    Narrow
    10Partially ThreadedThread Cutting175091530A77800000
    2 1/2"0.23"0.125"1/16"
    Narrow
    10Partially ThreadedThread Cutting175091530A78200000
    3"0.23"0.125"1/16"
    Narrow
    10Partially ThreadedThread Cutting172591530A40000000
     
    No. 8
    3/4"0.344"0.192"5/64"
    Standard
    8Partially ThreadedThread Cutting1710090000A18800000
    1"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting1710090000A2110000
    1 1/4"0.344"0.192"5/64"
    Standard
    8Partially ThreadedThread Cutting1710090000A19600000
    1 1/2"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting1710090000A21200000
    1 5/8"0.344"0.192"5/64"
    Standard
    8Partially ThreadedThread Cutting175090000A20000000
    1 3/4"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting1710090000A21300000
    2"0.344"0.192"5/64"
    Standard
    8Partially ThreadedThread Cutting175090000A20500000
    2 1/2"0.344"0.192"5/64"
    Standard
    8Partially ThreadedThread Cutting175090000A21500000
    2 3/4"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting175090000A21400000
    3"0.344"0.192"5/64"
    Standard
    8Partially ThreadedThread Cutting175090000A21900000
     
    No. 9
    4"0.25"0.125"5/64"
    Narrow
    14Partially ThreadedThread Cutting171091530A4250000
     
    No. 10
    1"0.344"0.189"3/32"
    Standard
    8Partially ThreadedThread Cutting1710090000A22000000
    1 1/4"0.344"0.189"3/32"
    Standard
    8Partially ThreadedThread Cutting1710090000A22200000
    1 1/2"0.344"0.189"3/32"
    Standard
    8Partially ThreadedThread Cutting175090000A22400000
    1 5/8"0.344"0.189"3/32"
    Standard
    13Partially ThreadedThread Cutting175090000A31100000
    1 3/4"0.344"0.189"3/32"
    Standard
    8Partially ThreadedThread Cutting175090000A22600000
    2"0.344"0.189"3/32"
    Standard
    8Partially ThreadedThread Cutting175090000A22800000
    2 1/4"0.344"0.189"3/32"
    Standard
    13Partially ThreadedThread Cutting175090000A31200000
    2 1/2"0.344"0.189"3/32"
    Standard
    8Partially ThreadedThread Cutting172590000A25500000
    2 3/4"0.344"0.189"3/32"
    Standard
    13Partially ThreadedThread Cutting172590000A3130000
    3"0.344"0.189"3/32"
    Standard
    8Partially ThreadedThread Cutting172590000A25700000
    3 3/4"0.344"0.189"3/32"
    Standard
    8Partially ThreadedThread Cutting172590000A26500000
    4"0.344"0.189"3/32"
    Standard
    13Partially ThreadedThread Cutting172590000A31400000
     
    No. 12
    2"0.43"0.203"7/64"
    Standard
    11Partially ThreadedThread Cutting172590000A6120000
    2 1/2"0.43"0.203"7/64"
    Standard
    7Partially ThreadedThread Cutting172590000A60100000
    4"0.43"0.203"7/64"
    Standard
    7Partially ThreadedThread Cutting171090000A61600000
    4 1/2"0.43"0.203"7/64"
    Standard
    7Partially ThreadedThread Cutting171090000A62200000
    5 1/2"0.43"0.203"7/64"
    Standard
    11Partially ThreadedThread Cutting171090000A6130000
    6"0.43"0.203"7/64"
    Standard
    7Partially ThreadedThread Cutting171090000A63300000
     
    No. 14
    2"0.43"0.25"7/64"
    Standard
    10Partially ThreadedThread Cutting172590000A71100000
    2 1/2"0.43"0.25"7/64"
    Standard
    10Partially ThreadedThread Cutting171090000A7120000
    3"0.43"0.25"7/64"
    Standard
    10Partially ThreadedThread Cutting171090000A7130000
    3 1/2"0.43"0.25"7/64"
    Standard
    7Partially ThreadedThread Cutting171090000A74400000
    4"0.43"0.25"7/64"
    Standard
    7Partially ThreadedThread Cutting171090000A74900000
    4 1/2"0.43"0.25"7/64"
    Standard
    10Partially ThreadedThread Cutting171090000A71400000
    5"0.43"0.25"7/64"
    Standard
    7Partially ThreadedThread Cutting171090000A75500000
    6"0.43"0.25"7/64"
    Standard
    10Partially ThreadedThread Cutting17590000A7150000
     
    316 Stainless Steel
     
    No. 6
    1 1/4"0.344"0.197"1/16"
    Standard
    18Partially ThreadedThread Cutting175090000A4010000
    1 5/8"0.344"0.197"1/16"
    Standard
    18Partially ThreadedThread Cutting175090000A4020000
    2"0.344"0.197"1/16"
    Standard
    18Partially ThreadedThread Cutting175090000A4030000
     
    No. 7
    1 5/8"0.23"0.125"1/16"
    Narrow
    16Partially ThreadedThread Cutting175090076A71000000
    2 1/4"0.23"0.125"1/16"
    Narrow
    16Partially ThreadedThread Cutting172590076A72000000
    3"0.23"0.125"1/16"
    Narrow
    16Partially ThreadedThread Cutting172590076A73000000
     
    No. 8
    1 1/4"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting175090000A28100000
    1 1/2"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting175090000A4040000
    1 5/8"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting175090000A29000000
    2"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting175090000A29100000
    2 1/4"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting175090000A40500000
    3"0.344"0.192"5/64"
    Standard
    15Partially ThreadedThread Cutting172590000A4060000
     
    No. 10
    1 5/8"0.344"0.189"3/32"
    Standard
    13Partially ThreadedThread Cutting172590000A4070000
    2 1/2"0.344"0.189"3/32"
    Standard
    13Partially ThreadedThread Cutting172590000A29300000
    3"0.344"0.189"3/32"
    Standard
    13Partially ThreadedThread Cutting172590000A29400000
    3 1/2"0.344"0.189"3/32"
    Standard
    13Partially ThreadedThread Cutting172590000A29500000
    4"0.344"0.189"3/32"
    Standard
    13Partially ThreadedThread Cutting171090000A4080000
     
    No. 12
    2"0.43"0.203"7/64"
    Standard
    11Partially ThreadedThread Cutting171090000A4090000
    2 1/2"0.43"0.203"7/64"
    Standard
    11Partially ThreadedThread Cutting172590000A29700000
    3"0.43"0.203"7/64"
    Standard
    11Partially ThreadedThread Cutting172590000A29800000
    4"0.43"0.203"7/64"
    Standard
    11Partially ThreadedThread Cutting171090000A3000000
    4 1/2"0.43"0.203"7/64"
    Standard
    11Partially ThreadedThread Cutting171090000A30300000
    5"0.43"0.203"7/64"
    Standard
    11Partially ThreadedThread Cutting171090000A30500000
     
    No. 14
    3"0.43"0.25"7/64"
    Standard
    10Partially ThreadedThread Cutting171090000A4110000
    4"0.43"0.25"7/64"
    Standard
    10Partially ThreadedThread Cutting17590000A4130000
    5"0.43"0.25"7/64"
    Standard
    10Partially ThreadedThread Cutting17590000A4140000
    6"0.43"0.25"7/64"
    Standard
    10Partially ThreadedThread Cutting17590000A4150000
     

    Square-Drive Small-Head Drilling Drywall Screws for Metal Framing

    Image of Product. Front orientation. Drywall Screws. Square-Drive Small-Head Drilling Drywall Screws for Metal Framing.
    These screws have a drill point that powers through drywall and into metal studs up to 0.105" thick. Heads are one-third smaller than those of other drywall screws.
    Black Phosphate-Coated Steel—Black phosphate-coated steel screws resist corrosion in dry environments.
    Length—Length is measured from the top of the head.
    Head
    Drive
    Lg.
    Drill Point
    Size
    Drill Tip
    Lg.
    Dia.
    Ht.
    Size
    Style
    Max. Drilling
    Thk.
    Approx. Threads
    per In.
    Threading
    Min. Thread
    Lg.
    Pkg.
    Qty.
    Pkg.
    Black Phosphate-Coated Steel
     
    No. 6 Screw Size
    1 5/8"No. 29/64"0.225"0.113"No. 1Square
    0.105"20Partially Threaded7/8"10090330A50000000
    2 1/4"No. 29/64"0.195"0.113"No. 1Square
    0.105"20Partially Threaded1 1/4"10090330A60000000
     

    Sealing Screws for Wood and Composite Wood

    Image of Product. Front orientation. Wood Screws. Sealing Screws for Wood and Composite Wood.
    Prevent rot in roofs, decks, and outdoor posts. The rubber-backed washer in these screws keeps fluid out of fastened joints. They're made of stainless steel, so they won't degrade from chemically treated wood, such as ACQ-treated (arsenic-free) lumber. Also known as trim head screws, they exert less pressure on surfaces to curb splitting and distortion. The square drive handles more torque than slotted and Phillips drives, so it's less likely to slip.
    The screw drill tip acts as a built-in pilot, though pilot holes are still recommended near edges to avoid splitting. Length is measured from the top of the head.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Head
    Washer
    Lg.
    Dia.
    Ht.
    Drill Bit
    Size
    Flat Head
    Profile
    Approx. Threads
    per In.
    Threading
    OD
    Thk.
    Tapping
    Method
    Tapping
    Screw Type
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel with Stainless Steel and Rubber Washer
     
    No. 7
    1"0.23"0.125"1/16"
    Standard
    16Partially Threaded0.63"0.2"Thread Cutting172591540A100000000
    1 5/8"0.23"0.125"1/16"
    Standard
    16Partially Threaded0.63"0.2"Thread Cutting172591540A20000000
    2 1/4"0.23"0.125"1/16"
    Standard
    16Partially Threaded0.63"0.2"Thread Cutting171091540A30000000
    3"0.23"0.125"1/16"
    Standard
    16Partially Threaded0.63"0.2"Thread Cutting171091540A40000000
     
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