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    229 Products
    About Tapping Screws
    industrial info icon

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

    Strip-Resistant Steel Torx Rounded Head Screws for Sheet Metal

    Image of Product. Front orientation. Tapping Screws. Strip-Resistant Steel Torx Rounded Head Screws for Sheet Metal.
    Threads with double spirals grab thin-gauge sheet metal for a secure hold without damaging the material. As these screws tap, the threads engage along the whole length to prevent overtightening and ruining the threads. Also known as Fastite, they have a triangular shank and may have a slightly different diameter than standard screws. The deep six-lobe recess (also called a star drive) withstands more torque than slotted, Phillips, and hex drives.
    Length is measured from under the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Head
    Lg.
    Dia.
    Ht.
    Tapping
    Screw Type
    Drive
    Size
    Approx. Threads
    per In.
    Drill Bit
    Size
    Shank Cross
    Section
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 2 Screw Size
    1/4"0.167"0.062"CAT85648 Ga.
    Tri-Lobe2592750A058000000
    3/8"0.167"0.062"CAT85648 Ga.
    Tri-Lobe2592750A05400000
     
    No. 4 Screw Size
    1/4"0.219"0.08"CAT104044 Ga.
    Tri-Lobe2592750A10400000
    3/8"0.219"0.08"CAT104044 Ga.
    Tri-Lobe2592750A10700000
    3/4"0.219"0.08"CAT104044 Ga.
    Tri-Lobe2592750A11900000
     
    No. 6 Screw Size
    1/4"0.27"0.097"CAT153232 Ga.
    Tri-Lobe2592750A15300000
    3/8"0.27"0.097"CAT153232 Ga.
    Tri-Lobe2592750A15700000
     
    No. 8 Screw Size
    1/4"0.322"0.115"CAT203229 Ga.
    Tri-Lobe2592750A20500000
    3/8"0.322"0.115"CAT203229 Ga.
    Tri-Lobe2592750A20900000
    1/2"0.322"0.115"CAT203229 Ga.
    Tri-Lobe2592750A21300000
    5/8"0.322"0.115"CAT203229 Ga.
    Tri-Lobe2592750A21700000
     
    No. 10 Screw Size
    3/8"0.373"0.133"CAT252421 Ga.
    Tri-Lobe2592750A25600000
    3/8"0.373"0.133"CAT253221 Ga.
    Tri-Lobe2592750A30700000
    1/2"0.373"0.133"CAT252421 Ga.
    Tri-Lobe2592750A25900000
    1/2"0.373"0.133"CAT253221 Ga.
    Tri-Lobe2592750A31000000
    3/4"0.373"0.133"CAT253221 Ga.
    Tri-Lobe2592750A31900000
     
    M2 Screw Size
    6 mm4.2 mm1.8 mmCAT61.5 mm
    Tri-Lobe2592750A55600000
     
    M2.5 Screw Size
    6 mm4.9 mm2.3 mmCAT848 Ga.
    Tri-Lobe2592750A61100000
    8 mm4.9 mm2.3 mmCAT848 Ga.
    Tri-Lobe2592750A61500000
     
    M3 Screw Size
    4 mm5.6 mm2.6 mmCAT1042 Ga.
    Tri-Lobe2592750A65200000
    6 mm5.6 mm2.6 mmCAT1042 Ga.
    Tri-Lobe2592750A65600000
    8 mm5.6 mm2.6 mmCAT1042 Ga.
    Tri-Lobe2592750A66100000
    10 mm5.6 mm2.6 mmCAT1042 Ga.
    Tri-Lobe2592750A66500000
     
    M4 Screw Size
    6 mm8 mm3.3 mmCAT201/8"
    Tri-Lobe2592750A71200000
    8 mm8 mm3.3 mmCAT201/8"
    Tri-Lobe2592750A71600000
    10 mm8 mm3.3 mmCAT201/8"
    Tri-Lobe2592750A72000000
     

    Steel Torx Rounded Head Screws for Sheet Metal

    Image of Product. Front orientation. Tapping Screws. Steel Torx Rounded Head Screws for Sheet Metal.
    No slipping and stripping the drive when securing sheet metal. Also known as star drive screws, these withstand more torque than screws with a slotted, Phillips, or hex drive. The pointed tip starts a hole in sheets up to 0.025" thick, but for thicker material you’ll need to drill first. Screws 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.
    Head
    Lg.
    Dia.
    Ht.
    Tapping
    Screw Type
    Drive
    Size
    Approx. Threads
    per In.
    Drill Bit
    Size
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 4 Screw Size
    1/4"0.219"0.08"ABT102444 Ga.
    10090925A106000000
    3/8"0.219"0.08"ABT102444 Ga.
    10090925A10800000
    1/2"0.219"0.08"ABT102444 Ga.
    10090925A11000000
    5/8"0.219"0.08"ABT102444 Ga.
    10090925A11500000
    3/4"0.219"0.08"ABT102444 Ga.
    5090925A2660000
     
    No. 6 Screw Size
    3/8"0.27"0.097"ABT151832 Ga.
    10090925A14600000
    1/2"0.27"0.097"ABT151832 Ga.
    10090925A14800000
    5/8"0.27"0.097"ABT151832 Ga.
    5090925A15000000
    3/4"0.27"0.097"ABT151832 Ga.
    5090925A15100000
    7/8"0.27"0.097"ABT151832 Ga.
    5090925A15300000
    1"0.27"0.097"ABT151832 Ga.
    5090925A15500000
    1 1/4"0.27"0.097"ABT151832 Ga.
    5090925A1570000
     
    No. 8 Screw Size
    1/2"0.322"0.115"ABT201529 Ga.
    10090925A19400000
    3/4"0.322"0.115"ABT201529 Ga.
    5090925A19600000
    7/8"0.322"0.115"ABT201529 Ga.
    5090925A1980000
    1"0.322"0.115"ABT201529 Ga.
    5090925A19900000
    1 1/4"0.322"0.115"ABT201529 Ga.
    5090925A20100000
    1 1/2"0.322"0.115"ABT201529 Ga.
    5090925A20300000
     
    No. 10 Screw Size
    1/2"0.373"0.133"ABT251221 Ga.
    5090925A24200000
    5/8"0.373"0.133"ABT251221 Ga.
    5090925A24300000
    3/4"0.373"0.133"ABT251221 Ga.
    5090925A24500000
    1"0.373"0.133"ABT251221 Ga.
    5090925A24700000
    1 1/4"0.373"0.133"ABT251221 Ga.
    5090925A24900000
    1 1/2"0.373"0.133"ABT251221 Ga.
    5090925A25100000
    1 3/4"0.373"0.133"ABT251221 Ga.
    2590925A2550000
    2"0.373"0.133"ABT251221 Ga.
    2590925A25700000
     
    No. 12 Screw Size
    1/2"0.425"0.151"ABT27113/16"
    5090925A26700000
    3/4"0.425"0.151"ABT27113/16"
    5090925A25900000
    1"0.425"0.151"ABT27113/16"
    5090925A26000000
    1 1/4"0.425"0.151"ABT27113/16"
    2590925A26500000
     

    Tamper-Resistant Torx Stainless Steel Rounded Head Screws for Sheet Metal

    Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Torx Stainless Steel Rounded Head Screws for Sheet Metal.
    Prevent unauthorized access with screws that require a tamper-resistant Torx driver to remove. The deep, six-lobe recess (also known as pin-in-Torx) handles high torque to keep drivers from slipping and stripping the drive. These screws have a pointed tip that starts a hole in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first. Screws resist rust and have a rounded head to create a finished look.
    Length is measured from under 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.
    Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.
    Tapping Screws
    Power Tools Bits
    Head
    Lg.
    Dia.
    Ht.
    Tapping
    Screw Type
    Drive
    Size
    Approx. Threads
    per In.
    Drill Bit
    Size
    Pkg.
    Qty.
    Pkg.
    Each
    18-8 Stainless Steel
     
    No. 4 Screw Size
    3/8"0.206"0.055"ABT8243/32"
    2595638A3210000007233A6100000
    1/2"0.206"0.055"ABT8243/32"
    2595638A322000007233A610000
    5/8"0.206"0.055"ABT8243/32"
    2595638A323000007233A610000
    3/4"0.206"0.055"ABT8243/32"
    2595638A324000007233A610000
     
    No. 6 Screw Size
    3/8"0.255"0.07"ABT10207/64"
    2595638A325000007233A630000
    1/2"0.262"0.073"ABT101832 Ga.
    2595638A148000007233A630000
    5/8"0.255"0.07"ABT10207/64"
    2595638A326000007233A630000
    3/4"0.262"0.073"ABT101832 Ga.
    2595638A151000007233A630000
    1"0.262"0.073"ABT101832 Ga.
    2595638A153000007233A630000
    1 1/4"0.255"0.07"ABT10207/64"
    2595638A327000007233A630000
    1 1/2"0.262"0.073"ABT101832 Ga.
    2595638A155000007233A630000
     
    No. 8 Screw Size
    3/8"0.307"0.085"ABT15181/8"
    2595638A328000007233A640000
    1/2"0.312"0.087"ABT151529 Ga.
    2595638A194000007233A640000
    5/8"0.307"0.085"ABT15181/8"
    2595638A329000007233A640000
    3/4"0.312"0.087"ABT151529 Ga.
    2595638A197000007233A640000
    1"0.312"0.087"ABT151529 Ga.
    2595638A199000007233A640000
    1 1/4"0.312"0.087"ABT151529 Ga.
    2595638A201000007233A640000
    1 1/2"0.312"0.087"ABT151529 Ga.
    2595638A205000007233A640000
    2"0.307"0.085"ABT15181/8"
    2595638A331000007233A640000
     
    No. 10 Screw Size
    1/2"0.361"0.101"ABT251221 Ga.
    2595638A242000007233A660000
    5/8"0.355"0.1"ABT25169/64"
    2595638A332000007233A660000
    3/4"0.361"0.101"ABT251221 Ga.
    2595638A245000007233A660000
    1"0.361"0.101"ABT251221 Ga.
    2595638A247000007233A660000
    1 1/4"0.361"0.101"ABT251221 Ga.
    2595638A249000007233A660000
    1 1/2"0.361"0.101"ABT251221 Ga.
    1095638A251000007233A660000
    2"0.355"0.1"ABT25169/64"
    1095638A333000007233A660000
     
    No. 12 Screw Size
    3/4"0.41"0.11"ABT25145/32"
    1095638A33400007233A660000
    1"0.41"0.11"ABT25145/32"
    1095638A33500007233A660000
    1 1/4"0.41"0.11"ABT25145/32"
    1095638A336000007233A660000
    1 1/2"0.41"0.11"ABT25145/32"
    1095638A337000007233A660000
     
    No. 14 Screw Size
    1/2"0.437"0.132"ABT27105.5 mm
    1095638A313000007233A670000
    3/4"0.437"0.132"ABT27105.5 mm
    1095638A314000007233A670000
    1"0.437"0.132"ABT27105.5 mm
    1095638A315000007233A670000
    1 1/2"0.437"0.132"ABT27105.5 mm
    1095638A317000007233A670000
    2"0.43"0.13"ABT27143/16"
    1095638A338000007233A670000
     

    Tamper-Resistant Torx Stainless Steel Flat Head Screws for Sheet Metal

    Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Torx Stainless Steel Flat Head Screws for Sheet Metal.
    Attach components with countersunk holes to sheet metal and discourage tampering. With a security pin in the drive, these corrosion-resistant screws require a tamper-resistant Torx driver to remove. The deep, six-lobe recess handles high torque to avoid slipping and stripping the drive. Screws have a flat, beveled head to sit flush with surfaces. Their pointed tip starts a hole in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first.
    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.
    Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.
    Tapping Screws
    Power Tools Bits
    Head
    Lg.
    Dia.
    Ht.
    Tapping
    Screw Type
    Drive
    Size
    Approx. Threads
    per In.
    Countersink
    Angle
    Flat Head
    Profile
    Drill Bit
    Size, mm
    Pkg.
    Qty.
    Pkg.
    Each
    18-8 Stainless Steel
     
    No. 6 Screw Size
    1/2"0.257"0.097"ABT151882°
    Standard
    32 Ga.
    2595015A2920000007233A6400000
    5/8"0.277"0.097"ABT151882°
    Standard
    32 Ga.
    2595015A271000007233A640000
    3/4"0.257"0.097"ABT151882°
    Standard
    32 Ga.
    2595015A294000007233A640000
    1"0.257"0.097"ABT151882°
    Standard
    32 Ga.
    2595015A296000007233A640000
    1 1/2"0.277"0.097"ABT151882°
    Standard
    32 Ga.
    2595015A272000007233A640000
     
    No. 8 Screw Size
    1/2"0.307"0.112"ABT201582°
    Standard
    29 Ga.
    2595015A298000007233A650000
    5/8"0.327"0.112"ABT201582°
    Standard
    29 Ga.
    2595015A273000007233A650000
    3/4"0.307"0.112"ABT201582°
    Standard
    29 Ga.
    2595015A301000007233A650000
    1"0.307"0.112"ABT201582°
    Standard
    29 Ga.
    2595015A303000007233A650000
    1 1/4"0.307"0.112"ABT201582°
    Standard
    29 Ga.
    2595015A305000007233A650000
    1 1/2"0.327"0.112"ABT201582°
    Standard
    29 Ga.
    1095015A27400007233A650000
    1 3/4"0.327"0.112"ABT201582°
    Standard
    29 Ga.
    1095015A27500007233A650000
    2"0.327"0.112"ABT201582°
    Standard
    29 Ga.
    1095015A27600007233A650000
     
    No. 10 Screw Size
    1/2"0.357"0.127"ABT251282°
    Standard
    21 Ga.
    2595015A450000007233A660000
    3/4"0.357"0.127"ABT251282°
    Standard
    21 Ga.
    2595015A307000007233A660000
    1"0.357"0.127"ABT251282°
    Standard
    21 Ga.
    2595015A309000007233A660000
    1 1/4"0.378"0.127"ABT251282°
    Standard
    21 Ga.
    1095015A27700007233A660000
    1 1/2"0.357"0.127"ABT251282°
    Standard
    21 Ga.
    1095015A31300007233A660000
     
    No. 14 Screw Size
    5/8"0.531"0.161"ABT301482°
    Standard
    4 Ga.
    1095015A27800007233A680000
    3/4"0.531"0.161"ABT301482°
    Standard
    4 Ga.
    1095015A279000007233A680000
    1"0.531"0.161"ABT301482°
    Standard
    4 Ga.
    1095015A281000007233A680000
    1 1/4"0.531"0.161"ABT301482°
    Standard
    4 Ga.
    1095015A282000007233A680000
    1 1/2"0.531"0.161"ABT301482°
    Standard
    4 Ga.
    1095015A283000007233A680000
     
    1/4" Screw Size
    3/4"0.472"0.161"ABT301082°
    Standard
    5.5
    1095015A31400007233A680000
    1"0.472"0.161"ABT301082°
    Standard
    5.5
    1095015A620000007233A680000
    1 1/4"0.472"0.161"ABT301082°
    Standard
    5.5
    1095015A315000007233A680000
     

    Steel Torx Flat Head Thread-Cutting Screws

    Image of Product. Front orientation. Tapping Screws. Steel Torx Flat Head Thread-Cutting Screws.
    Keep drivers from slipping as you cut threads and secure components with countersunk holes. These Torx screws have a six-lobe recess that’s also known as a star drive. Because they remove material, they take less effort to install and put less stress on your workpiece than thread-forming screws. Their flat, beveled head sits flush in holes.
    Length is measured from the top of the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Black Phosphate-Coated Steel—More corrosion resistant than black-oxide steel, these screws are suitable for environments with some moisture. They have a dark, matte coating for a finished look.
    Head
    Lg.
    Dia.
    Ht.
    Tapping
    Screw Type
    Drive
    Size
    Approx. Threads
    per In.
    Countersink
    Angle
    Flat Head
    Profile
    Drill Bit
    Size
    Shank Cross
    Section
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 6 Screw Size
    3/8"0.262"0.083"FT103282°
    Standard
    31 Ga.
    Round5090390A136000000
    1/2"0.262"0.083"FT103282°
    Standard
    31 Ga.
    Round5090390A13700000
    3/4"0.262"0.083"FT103282°
    Standard
    31 Ga.
    Round10090390A13800000
     
    No. 8 Screw Size
    1/2"0.312"0.1"FT153282°
    Standard
    26 Ga.
    Round10090390A13900000
    3/4"0.312"0.1"FT153282°
    Standard
    26 Ga.
    Round5090390A14100000
     
    No. 10 Screw Size
    5/8"0.362"0.116"FT202482°
    Standard
    17 Ga.
    Round5090390A14200000
    3/4"0.362"0.116"FT202482°
    Standard
    17 Ga.
    Round5090390A14300000
    1"0.362"0.116"FT202482°
    Standard
    17 Ga.
    Round2590390A14400000
     
    No. 12 Screw Size
    1"0.412"0.132"FT252482°
    Standard
    8 Ga.
    Round2590390A14500000
     
    1/4" Screw Size
    1/2"0.477"0.153"FT272082°
    Standard
    1 Ga.
    Round2590390A14600000
    5/8"0.477"0.153"FT272082°
    Standard
    1 Ga.
    Round2590390A14700000
    3/4"0.477"0.153"FT272082°
    Standard
    1 Ga.
    Round2590390A14800000
    1"0.477"0.153"FT272082°
    Standard
    1 Ga.
    Round2590390A14900000
    1 1/4"0.477"0.153"FT272082°
    Standard
    1 Ga.
    Round2590390A15100000
    1 1/2"0.477"0.153"FT272082°
    Standard
    1 Ga.
    Round2590390A15200000
     
    Black Phosphate-Coated Steel
     
    No. 10 Screw Size
    1 1/4"0.362"0.116"FT202482°
    Standard
    17 Ga.
    Round5090390A11100000
     
    1/4" Screw Size
    1/2"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round2590390A11200000
    3/4"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round2590390A11300000
    1"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round10090390A53500000
    1 1/4"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round10090390A54000000
    1 1/2"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round5090390A54500000
    1 3/4"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round5090390A11400000
    2"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round5090390A55000000
    2 1/4"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round5090390A55100000
    2 1/2"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round5090390A55200000
    2 3/4"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round2590390A11500000
    3"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round2590390A55400000
    3 1/2"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round2590390A55500000
    4"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round2590390A55600000
    4 1/2"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round190390A1160000
    5"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round190390A1170000
    6"0.477"0.153"FT302082°
    Standard
    1 Ga.
    Round190390A1180000
     
    5/16" Screw Size
    3/4"0.597"0.191"FT401882°
    Standard
    L
    Round1090390A11900000
    1"0.597"0.191"FT401882°
    Standard
    L
    Round5090390A12100000
    1 1/4"0.597"0.191"FT401882°
    Standard
    L
    Round5090390A12200000
    1 1/2"0.597"0.191"FT401882°
    Standard
    L
    Round5090390A12300000
    1 3/4"0.597"0.191"FT401882°
    Standard
    L
    Round5090390A12400000
    2"0.597"0.191"FT401882°
    Standard
    L
    Round5090390A59100000
    2 1/4"0.597"0.191"FT401882°
    Standard
    L
    Round2590390A59200000
    2 1/2"0.597"0.191"FT401882°
    Standard
    L
    Round2590390A59300000
    3"0.597"0.191"FT401882°
    Standard
    L
    Round2590390A59500000
    3 1/2"0.597"0.191"FT401882°
    Standard
    L
    Round590390A12500000
    4"0.597"0.191"FT401882°
    Standard
    L
    Round190390A1260000
    5"0.597"0.191"FT401882°
    Standard
    L
    Round190390A1270000
    6"0.597"0.191"FT401882°
    Standard
    L
    Round190390A1280000
     
    3/8" Screw Size
    1"0.717"0.23"FT401682°
    Standard
    T
    Round590390A12900000
    1 1/4"0.717"0.23"FT401682°
    Standard
    T
    Round590390A13100000
    1 1/2"0.717"0.23"FT401682°
    Standard
    T
    Round1090390A13200000
    2"0.717"0.23"FT401682°
    Standard
    T
    Round2590390A13300000
    2 1/2"0.717"0.23"FT401682°
    Standard
    T
    Round190390A1340000
    3"0.717"0.23"FT401682°
    Standard
    T
    Round190390A1350000
     

    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.
    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
    Drive
    Size
    Approx. Threads
    per In.
    Pkg.
    Qty.
    Pkg.
    Each
    410 Stainless Steel
     
    No. 8 Screw Size
    1/2"No. 23/16"0.322"0.115"0.098"ABT20182592970A201000007233A6500000
    3/4"No. 23/16"0.322"0.115"0.098"ABT20182592970A20300007233A650000
    1"No. 23/16"0.322"0.115"0.098"ABT20181092970A20500007233A650000
    1 1/4"No. 23/16"0.322"0.115"0.098"ABT20181092970A20800007233A650000
    1 1/2"No. 23/16"0.322"0.115"0.098"ABT20181092970A22700007233A650000
     
    No. 10 Screw Size
    1/2"No. 213/64"0.373"0.133"0.106"ABT25161092970A20900007233A660000
    3/4"No. 213/64"0.373"0.133"0.106"ABT25161092970A21100007233A660000
    1"No. 213/64"0.373"0.133"0.106"ABT25161092970A21300007233A660000
    1 1/4"No. 213/64"0.373"0.133"0.106"ABT25161092970A21600007233A660000
    1 1/2"No. 213/64"0.373"0.133"0.106"ABT25161092970A21800007233A660000
     
    No. 12 Screw Size
    1"No. 39/32"0.425"0.156"0.187"ABT27141092970A22100007233A670000
    1 1/2"No. 39/32"0.425"0.156"0.187"ABT27141092970A22200007233A670000
    2"No. 39/32"0.425"0.156"0.187"ABT27141092970A22300007233A670000
     
    No. 14 Screw Size
    1"No. 311/32"0.492"0.175"0.21"ABT30141092970A22400007233A680000
    1 1/2"No. 311/32"0.492"0.175"0.21"ABT30141092970A22500007233A680000
    2"No. 311/32"0.492"0.175"0.21"ABT30141092970A22600007233A680000
     

    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
    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"BSDT25165094425A6400000
    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
     

    Tamper-Resistant Torx Steel Flat Head Drilling Screws

    Image of Product. Front orientation. Tapping Screws. Tamper-Resistant Torx Steel Flat Head Drilling Screws.
    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
    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"BT151882°
    Standard
    5094625A1110000007233A6400000
    3/4"No. 23/16"0.312"0.1"0.098"BT151882°
    Standard
    5094625A112000007233A640000
    1"No. 23/16"0.312"0.1"0.098"BT151882°
    Standard
    5094625A113000007233A640000
    1 1/4"No. 23/16"0.312"0.1"0.098"BT151882°
    Standard
    5094625A315000007233A640000
    1 1/2"No. 23/16"0.312"0.1"0.098"BT151882°
    Standard
    5094625A114000007233A640000
     
    No. 10 Screw Size
    1/2"No. 23/16"0.362"0.081"0.098"BT201682°
    Standard
    5094625A121000007233A650000
    3/4"No. 31/4"0.362"0.116"0.15"BT201682°
    Standard
    5094625A423000007233A650000
    1"No. 31/4"0.362"0.116"0.15"BT201682°
    Standard
    5094625A122000007233A650000
    1 1/2"No. 31/4"0.362"0.116"0.15"BT201682°
    Standard
    5094625A425000007233A650000
    2"No. 31/4"0.362"0.116"0.15"BT201682°
    Standard
    2594625A427000007233A650000
     
    No. 14 Screw Size
    1"No. 311/32"0.477"0.153"0.21"BT271482°
    Standard
    2594625A131000007233A670000
    1 1/2"No. 311/32"0.477"0.153"0.21"BT271482°
    Standard
    2594625A132000007233A670000
    2"No. 311/32"0.477"0.153"0.21"BT271482°
    Standard
    2594625A133000007233A670000
     

    Steel Torx Flat Head Screws for Joining Wood to Sheet Metal

    Image of Product. Front orientation. Wood Screws. Steel Torx Flat Head Screws for Joining Wood to Sheet Metal.
    Fasten wood to sheet metal while reducing stripping and pull-out. The dual threads on these screws grip both materials at the same time, so they install quickly, require less torque, and resist vibration. Also known as trailer floor screws, these screws are often used to fasten wooden boards to metal trailer frames. With a deep six-lobe opening, Torx drives handle more torque than slotted, Phillips, and hex drives. The flat head deters snags.
    Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.
    Black Phosphate-Coated Steel—More corrosion resistant than black-oxide steel, these screws are suitable for environments with minimal moisture. They have a dark, matte coating to create a finished look.
    Head
    Lg.
    Dia.
    Ht.
    Drill Bit
    Size
    Countersink
    Angle
    Flat Head
    Profile
    Threading
    Tapping
    Method
    Pkg.
    Qty.
    Pkg.
    Black Phosphate-Coated Steel
     
    1/4"-20
    1"0.479"0.153"3 Ga.
    82°
    Standard
    Fully ThreadedThread Forming5091087A120000000
    1 1/4"0.479"0.153"3 Ga.
    82°
    Standard
    Fully ThreadedThread Forming5091087A12200000
    1 1/2"0.479"0.153"3 Ga.
    82°
    Standard
    Fully ThreadedThread Forming5091087A12400000
    1 3/4"0.479"0.153"3 Ga.
    82°
    Standard
    Fully ThreadedThread Forming5091087A12900000
    2"0.479"0.153"3 Ga.
    82°
    Standard
    Fully ThreadedThread Forming5091087A12800000
    2 1/4"0.479"0.153"3 Ga.
    82°
    Standard
    Partially ThreadedThread Forming5091087A13000000
    2 1/2"0.479"0.153"3 Ga.
    82°
    Standard
    Partially ThreadedThread Forming2591087A13200000
    3"0.479"0.153"3 Ga.
    82°
    Standard
    Partially ThreadedThread Forming2591087A13400000
    3 1/2"0.479"0.153"3 Ga.
    82°
    Standard
    Partially ThreadedThread Forming1091087A13500000
    4"0.479"0.153"3 Ga.
    82°
    Standard
    Partially ThreadedThread Forming1091087A13600000
     
    5/16"-18
    1 3/4"0.6"0.191"H
    82°
    Standard
    Fully ThreadedThread Forming2591087A23800000
    2"0.6"0.191"H
    82°
    Standard
    Fully ThreadedThread Forming2591087A24100000
    2 1/4"0.6"0.191"H
    82°
    Standard
    Partially ThreadedThread Forming1091087A2430000
    2 1/2"0.6"0.191"H
    82°
    Standard
    Partially ThreadedThread Forming2591087A24500000
    3"0.6"0.191"H
    82°
    Standard
    Partially ThreadedThread Forming1091087A24700000
     
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