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    111 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.

    Tamper-Resistant Torx Stainless Steel Rounded Head Drilling Screws

    Image of Product. Front orientation. Tapping Screws. Tamper-Resistant Torx Stainless Steel Rounded Head Drilling Screws.
    Removable only with a tamper-resistant Torx driver, these screws drill and fasten in one step. The deep, six-lobe recess (also known as pin-in-Torx) prevents drivers from slipping and deters unauthorized access. These screws resist corrosion and have a rounded head to create 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. However, these screws won't hold up to the harsh chemicals that 316 stainless steel can.
    Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.
    Tapping Screws
    Power Tools Bits
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Dia.
    Ht.
    Max. Drilling
    Thk.
    Tapping Screw
    Type Designation
    Drive
    Size
    Approx. Threads
    per In.
    Pkg.
    Qty.
    Pkg.
    Each
    410 Stainless Steel
     
    No. 6 Screw Size
    3/8"No. 23/16"0.270"0.097"0.100"BSDT15205092970A311000007233A6400000
    1/2"No. 23/16"0.270"0.097"0.100"BSDT15205092970A31200007233A640000
     
    No. 8 Screw Size
    1/2"No. 23/16"0.322"0.115"0.098"BSDT20182592970A20100007233A650000
    3/4"No. 23/16"0.322"0.115"0.098"BSDT20182592970A20300007233A650000
    1"No. 23/16"0.322"0.115"0.098"BSDT20181092970A20500007233A650000
    1 1/4"No. 23/16"0.322"0.115"0.098"BSDT20181092970A20800007233A650000
    1 1/2"No. 23/16"0.322"0.115"0.098"BSDT20181092970A22700007233A650000
     
    No. 10 Screw Size
    1/2"No. 213/64"0.373"0.133"0.106"BSDT25161092970A20900007233A660000
    3/4"No. 213/64"0.373"0.133"0.106"BSDT25161092970A21100007233A660000
    1"No. 213/64"0.373"0.133"0.106"BSDT25161092970A21300007233A660000
    1 1/4"No. 213/64"0.373"0.133"0.106"BSDT25161092970A21600007233A660000
    1 1/2"No. 213/64"0.373"0.133"0.106"BSDT25161092970A21800007233A660000
     
    No. 12 Screw Size
    3/4"No. 39/32"0.425"0.156"0.187"BSDT25141092970A34300007233A660000
    1"No. 39/32"0.425"0.156"0.187"BSDT27141092970A22100007233A670000
    1 1/4"No. 39/32"0.425"0.156"0.187"BSDT25141092970A34500007233A660000
    1 1/2"No. 39/32"0.425"0.156"0.187"BSDT27141092970A22200007233A670000
    2"No. 39/32"0.425"0.156"0.187"BSDT27141092970A22300007233A670000
     
    No. 14 Screw Size
    1"No. 311/32"0.492"0.175"0.21"BSDT30141092970A22400007233A680000
    1 1/2"No. 311/32"0.492"0.175"0.21"BSDT30141092970A22500007233A680000
    2"No. 311/32"0.492"0.175"0.21"BSDT30141092970A22600007233A680000
     
    1/4" Screw Size
    3/4"No. 325/64"0.492"0.175"0.220"BSDT30141092970A36300007233A680000
    1"No. 325/64"0.492"0.175"0.220"BSDT30141092970A36400007233A680000
    1 1/4"No. 325/64"0.492"0.175"0.220"BSDT30141092970A365000007233A680000
    1 1/2"No. 325/64"0.492"0.175"0.220"BSDT30141092970A366000007233A680000
     
    18-8 Stainless Steel
     
    No. 6 Screw Size
    3/8"No. 23/16"0.270"0.097"0.100"BSDT15202592970A51100007233A640000
    1/2"No. 23/16"0.270"0.097"0.100"BSDT15202592970A51200007233A640000
     
    No. 8 Screw Size
    1/2"No. 27/32"0.322"0.115"0.100"BSDT15182592970A52200007233A640000
    3/4"No. 27/32"0.322"0.115"0.100"BSDT15182592970A52300007233A640000
    1"No. 27/32"0.322"0.115"0.100"BSDT15182592970A524000007233A640000
    1 1/2"No. 27/32"0.322"0.115"0.100"BSDT15181092970A52600007233A640000
     
    No. 10 Screw Size
    1/2"No. 215/64"0.373"0.133"0.110"BSDT25162592970A532000007233A660000
    3/4"No. 319/64"0.373"0.133"0.175"BSDT25162592970A533000007233A660000
    1"No. 319/64"0.373"0.133"0.175"BSDT25162592970A534000007233A660000
    1 1/2"No. 319/64"0.373"0.133"0.175"BSDT25162592970A536000007233A660000
     
    No. 12 Screw Size
    3/4"No. 323/64"0.425"0.151"0.210"BSDT25141092970A54300007233A660000
    1"No. 323/64"0.425"0.151"0.210"BSDT25141092970A54400007233A660000
    1 1/2"No. 323/64"0.425"0.151"0.210"BSDT25141092970A54600007233A660000
    2"No. 323/64"0.425"0.151"0.210"BSDT25141092970A548000007233A660000
     
    1/4" Screw Size
    3/4"No. 325/64"0.492"0.175"0.220"BSDT30141092970A55300007233A680000
    1"No. 325/64"0.492"0.175"0.220"BSDT30141092970A55400007233A680000
    1 1/4"No. 325/64"0.492"0.175"0.220"BSDT30141092970A555000007233A680000
    1 1/2"No. 325/64"0.492"0.175"0.220"BSDT30141092970A556000007233A680000
    2"No. 325/64"0.492"0.175"0.220"BSDT30141092970A558000007233A680000
     

    Tamper-Resistant Torx Steel Flat Head Drilling Screws

    Image of Product. Front orientation. Tapping Screws. Tamper-Resistant Torx Steel Flat Head Drilling Screws.
    Image of Product. Back orientation. Tapping Screws. Tamper-Resistant Torx Steel Flat Head Drilling Screws.
    Image of Specification. Tamper-Resistant Torx Drive. Front orientation. Tapping Screws. Tamper-Resistant Torx Steel Flat Head Drilling Screws.

    Tamper-Resistant

    Torx Drive

    Drill and fasten components with countersunk holes and deter tampering. These screws have a deep, six-lobe recess (also known as pin-in-Torx) that turns only with a tamper-resistant Torx driver. Their flat, beveled head sits flush with surfaces.
    Length is measured from the top of the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.
    Tapping Screws
    Power Tools Bits
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Dia.
    Ht.
    Max. Drilling
    Thk.
    Tapping Screw
    Type Designation
    Drive
    Size
    Approx. Threads
    per In.
    Countersink
    Angle
    Flat Head
    Profile
    Pkg.
    Qty.
    Pkg.
    Each
    Zinc-Plated Steel
     
    No. 8 Screw Size
    1/2"No. 23/16"0.312"0.1"0.098"BSDT151882°
    Standard
    5094625A1110000007233A6400000
    3/4"No. 23/16"0.312"0.1"0.098"BSDT151882°
    Standard
    5094625A112000007233A640000
    1"No. 23/16"0.312"0.1"0.098"BSDT151882°
    Standard
    5094625A113000007233A640000
    1 1/4"No. 23/16"0.312"0.1"0.098"BSDT151882°
    Standard
    5094625A315000007233A640000
    1 1/2"No. 23/16"0.312"0.1"0.098"BSDT151882°
    Standard
    5094625A114000007233A640000
     
    No. 10 Screw Size
    1/2"No. 23/16"0.362"0.081"0.098"BSDT201682°
    Standard
    5094625A121000007233A650000
    3/4"No. 31/4"0.362"0.116"0.15"BSDT201682°
    Standard
    5094625A423000007233A650000
    1"No. 31/4"0.362"0.116"0.15"BSDT201682°
    Standard
    5094625A122000007233A650000
    1 1/2"No. 31/4"0.362"0.116"0.15"BSDT201682°
    Standard
    5094625A425000007233A650000
    2"No. 31/4"0.362"0.116"0.15"BSDT201682°
    Standard
    2594625A427000007233A650000
     
    No. 14 Screw Size
    1"No. 311/32"0.477"0.153"0.21"BSDT271482°
    Standard
    2594625A131000007233A670000
    1 1/2"No. 311/32"0.477"0.153"0.21"BSDT271482°
    Standard
    2594625A132000007233A670000
    2"No. 311/32"0.477"0.153"0.21"BSDT271482°
    Standard
    2594625A133000007233A670000
     

    Steel Torx Serrated-Flange Hex Head Drilling Screws

    Image of Product. Front orientation. Tapping Screws. Steel Torx Serrated-Flange Hex Head Drilling Screws.
    Two ways to install—use a Torx driver in the recess or grip the hex head with a nutdriver for more torque. These screws drill and fasten in one step. The serrated flange grips surfaces to resist mild vibration and spreads the load to prevent crushing thin metal.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Wd.
    Ht.
    Flange
    Dia.
    Max. Drilling
    Thk.
    Tapping Screw
    Type Designation
    Drive
    Size
    Approx. Threads
    per In.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 8 Screw Size
    1/2"No. 23/16"0.25"0.197"0.37"0.098"BSDT20185094425A510000000
    3/4"No. 23/16"0.25"0.197"0.37"0.098"BSDT20182594425A5300000
     
    No. 10 Screw Size
    3/4"No. 31/4"0.313"0.216"0.445"0.15"BSDT25165094425A64000000
    1"No. 31/4"0.313"0.216"0.445"0.15"BSDT25162594425A6600000
     
    No. 12 Screw Size
    3/4"No. 39/32"0.313"0.261"0.445"0.187"BSDT27145094425A77000000
    1"No. 39/32"0.313"0.261"0.445"0.187"BSDT27142594425A79000000
     
    1/4" Screw Size
    3/4"No. 35/16"0.375"0.303"0.55"0.21"BSDT30142594425A81000000
    1"No. 35/16"0.375"0.303"0.55"0.21"BSDT30142594425A83000000
     

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

    Image of Product. Front orientation. Wood Screws. Steel Torx Flat Head Drilling Screws for Joining Wood to Sheet Metal.
    These Torx 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. With a deep six-lobe opening, the Torx drive handles more torque than slotted, Phillips, and hex drives. The flat head deters snags.
    Length is measured from the top of the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Head
    Lg.
    Dia.
    Ht.
    Drill Point
    Size
    Drill Tip
    Lg.
    For Wood Thk.
    Range
    For Metal Thk.
    Range
    Flat Head
    Profile
    Approx. Threads
    per In.
    Threading
    Tapping
    Method
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 10
    1"0.48"0.136"No. 31/4"0.25" to 0.375"0.11" to 0.21"Standard
    16Fully ThreadedThread Forming5090425A460000000
    1 1/4"0.48"0.136"No. 31/4"0.375" to 0.5"0.11" to 0.21"Standard
    16Fully ThreadedThread Forming5090425A46100000
     

    Distortion-Free Screws for Composite Wood

    Image of Product. Front orientation. Wood Screws. Distortion-Free Screws for Composite Wood.
    Reverse threads pull stray material inward when fastening composite wood instead of letting it bulge out to the surface. The flat underside of the pancake head creates a strong hold without the need for a countersunk hole. The Torx drive handles more torque than slotted, Phillips, and hex 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.
    Head
    Lg.
    Dia.
    Ht.
    Drill Bit
    Size
    Rounded Head
    Profile
    Approx. Threads
    per In.
    Threading
    Tapping
    Method
    Tapping Screw
    Type Designation
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    No. 10
    2 1/2"0.317"0.087"3/32"
    Narrow
    9Fully ThreadedThread Cutting172598419A330000000
    2 3/4"0.266"0.11"3/32"
    Narrow
    13Fully ThreadedThread Cutting172598419A44000000
     

    Stainless Steel Torx Oversized Rounded Head Drilling Screws

    Image of Product. Front orientation. Tapping Screws. Stainless Steel Torx Oversized Rounded Head Drilling Screws.
    Image of Product. Back orientation. Tapping Screws. Stainless Steel Torx Oversized Rounded Head Drilling Screws.
    Drill and fasten in one step at high torque. These corrosion-resistant screws have a Torx drive, which ensures a good grip and less slip than slotted, Phillips, square, or hex drives. Their head is wider than other rounded styles to keep material flat against framing and spread pressure evenly to prevent material damage. Also known as lath screws.
    Length is measured from under the head.
    18-8 Stainless Steel—The choice for wet and outdoor environments. However, these screws won't hold up to the harsh chemicals that 316 stainless steel can.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Drill
    Tip
    Lg.
    Point
    Size
    Lg.
    Head
    Ht.
    Flange
    Dia.
    Max. Drilling
    Thk.
    Tapping Screw
    Type Designation
    Drive
    Size
    Approx. Threads
    per In.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    No. 10 Screw Size
    1/2"No. 215/64"0.098"0.441"0.11"BSDT20161091474A10100000
    3/4"No. 319/64"0.098"0.441"0.175"BSDT20161091474A1020000
    1 1/2"No. 319/64"0.098"0.441"0.175"BSDT2016591474A1030000
     
    1/4" Screw Size
    3/4"No. 325/64"0.134"0.583"0.175"BSDT2714591474A1040000
    1"No. 325/64"0.134"0.583"0.22"BSDT2714591474A10500000
    1 1/2"No. 325/64"0.134"0.583"0.22"BSDT2714191474A1060000
    2"No. 325/64"0.134"0.583"0.22"BSDT2714191474A1070000
     

    Steel Torx Rounded Head Drilling Screws

    Image of Product. Front orientation. Tapping Screws. Steel Torx Rounded Head Drilling Screws.
    Image of Product. Back orientation. Tapping Screws. Steel Torx Rounded Head Drilling Screws.
    Keep drivers from slipping as you drill and fasten components. The Torx drive on these screws have a deep, six-lobe recess that withstands more torque than slotted, Phillips, or hex drives. They have a rounded head to create a finished look.
    Length is measured from under the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Dia.
    Ht.
    Max. Drilling
    Thk.
    Tapping Screw
    Type Designation
    Drive
    Size
    Approx. Threads
    per In.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 6 Screw Size
    3/8"No. 23/16"0.27"0.097"0.09"BSDT15205091472A11100000
    1/2"No. 23/16"0.27"0.097"0.09"BSDT15205091472A1120000
    5/8"No. 23/16"0.27"0.097"0.09"BSDT15205091472A1130000
    3/4"No. 23/16"0.27"0.097"0.09"BSDT15205091472A1140000
    1"No. 23/16"0.27"0.097"0.09"BSDT15205091472A1150000
     
    No. 8 Screw Size
    1/2"No. 27/32"0.322"0.115"0.1"BSDT20182591472A1160000
    5/8"No. 27/32"0.322"0.115"0.1"BSDT20182591472A1170000
    3/4"No. 27/32"0.322"0.115"0.1"BSDT20182591472A1180000
    1"No. 27/32"0.322"0.115"0.1"BSDT20182591472A1190000
    1 1/4"No. 27/32"0.322"0.115"0.1"BSDT20182591472A1210000
    1 1/2"No. 27/32"0.322"0.115"0.1"BSDT20182591472A1220000
    2"No. 27/32"0.322"0.115"0.1"BSDT20182591472A1230000
     
    No. 10 Screw Size
    1/2"No. 27/32"0.373"0.133"0.11"BSDT25162591472A1240000
    3/4"No. 319/64"0.373"0.133"0.175"BSDT25162591472A1250000
    1"No. 319/64"0.373"0.133"0.175"BSDT25162591472A1260000
    1 1/4"No. 319/64"0.373"0.133"0.175"BSDT25162591472A1270000
    1 1/2"No. 319/64"0.373"0.133"0.175"BSDT25162591472A12800000
    2"No. 319/64"0.373"0.133"0.175"BSDT25161091472A1290000
     
    No. 12 Screw Size
    1/2"No. 323/64"0.425"0.151"0.21"BSDT27142591472A1310000
    3/4"No. 323/64"0.425"0.151"0.21"BSDT27142591472A1320000
    1"No. 323/64"0.425"0.151"0.21"BSDT27141091472A1330000
    1 1/4"No. 323/64"0.425"0.151"0.21"BSDT27141091472A1340000
    1 1/2"No. 323/64"0.425"0.151"0.21"BSDT27141091472A1350000
    2"No. 323/64"0.425"0.151"0.21"BSDT27141091472A1360000
     
    1/4" Screw Size
    3/4"No. 325/64"0.492"0.169"0.22"BSDT30141091472A1370000
    1"No. 325/64"0.492"0.169"0.22"BSDT30141091472A1380000
    1 1/4"No. 325/64"0.492"0.169"0.22"BSDT30141091472A1390000
    1 1/2"No. 325/64"0.492"0.169"0.22"BSDT30141091472A1410000
    1 3/4"No. 325/64"0.492"0.169"0.22"BSDT30141091472A1420000
    2"No. 325/64"0.492"0.169"0.22"BSDT3014591472A1430000
    2 1/4"No. 325/64"0.492"0.169"0.22"BSDT3014591472A1440000
     
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