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    144 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.

    Sealing Steel Flanged Hex Head Drilling Screws with Washer

    Image of Product. Front orientation. Tapping Screws. Sealing Steel Flanged Hex Head Drilling Screws with Washer.
    Image of Product. Back orientation. Tapping Screws. Sealing Steel Flanged Hex Head Drilling Screws with Washer.
    Drill, drive, and create a watertight seal all in one shot. The screws have rubber-bonded washer that compresses to keep out moisture. The washer also spreads the load to prevent crushing thin metal. Use a nutdriver or socket to turn the hex head.
    Length is measured from under the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Corrosion-Resistant-Coated Steel—The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments.
    Corrosion-Resistant-Coated Steel with 18-8 Stainless Steel Head—These screws have a steel shank and rust-resistant stainless steel head. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments.
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Wd.
    Ht.
    Max. Drilling
    Thk.
    Tapping
    Screw Type
    Approx. Threads
    per In.
    Washer
    Material
    Washer
    OD
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 8 Screw Size
    3/4"No. 23/16"0.25"0.242"0.098"BSD18Rubber/Steel0.5"5094059A20100000
    1"No. 20.148"0.25"0.248"0.098"BSD18Rubber/Steel0.5"2594059A2030000
    1 1/2"No. 29/64"0.25"0.242"0.098"BSD18Rubber/Steel0.5"2594059A2050000
     
    No. 10 Screw Size
    3/4"No. 31/4"0.313"0.252"0.15"BSD16Rubber/Steel0.5"10094059A24500000
    1"No. 31/4"0.313"0.279"0.176"BSD16Rubber/Steel0.5"10094059A24700000
    1 1/4"No. 37/32"0.313"0.252"0.15"BSD16Rubber/Steel0.5"5094059A24900000
     
    No. 12 Screw Size
    3/4"No. 39/32"0.313"0.295"0.187"BSD14Rubber/Steel0.563"10094059A29400000
    7/8"No. 40.325"0.313"0.303"0.21"CSD24Rubber/Steel0.563"5094059A26100000
    1"No. 39/32"0.313"0.295"0.187"BSD14Rubber/Steel0.563"10094059A29600000
    1 1/4"No. 30.254"0.313"0.303"0.187"BSD14Rubber/Steel0.563"5094059A29800000
    1 1/4"No. 40.325"0.313"0.303"0.21"CSD24Rubber/Steel0.563"1094059A26500000
    1 1/4"No. 545/64"0.313"0.295"1/2"CSD24Rubber/Steel0.563"5094059A31100000
    1 1/2"No. 521/32"0.313"0.295"1/2"CSD24Rubber/Steel0.563"2594059A31300000
    2"No. 30.254"0.313"0.303"0.187"BSD14Rubber/Steel0.563"5094059A30100000
    2"No. 521/32"0.313"0.295"1/2"CSD24Rubber/Steel0.563"2594059A31500000
    2 1/2"No. 30.254"0.313"0.303"0.187"BSD14Rubber/Steel0.563"2594059A30300000
    3"No. 31/4"0.313"0.295"0.187"BSD14Rubber/Steel0.563"1094059A30500000
     
    1/4" Screw Size
    3/4"No. 35/16"0.375"0.365"0.22"BSD14Rubber/Steel0.625"5094059A54100000
    1"No. 35/16"0.375"0.341"0.21"BSD14Rubber/Steel0.625"5094059A54200000
    1 1/2"No. 35/16"0.375"0.341"0.21"BSD14Rubber/Steel0.625"5094059A54600000
    2 1/2"No. 31/4"0.375"0.341"0.21"BSD14Rubber/Steel0.625"2594059A55200000
    3"No. 35/16"0.375"0.341"0.21"BSD14Rubber/Steel0.625"2594059A55100000
     
    Corrosion-Resistant-Coated Steel
     
    No. 10 Screw Size
    3/4"No. 31/4"0.313"0.305"0.15"BSD16Rubber/Steel0.5"5090628A28400000
    1"No. 23/16"0.313"0.265"0.106"BSD16Rubber/Steel0.5"2590628A28600000
    1 1/2"No. 31/4"0.313"0.252"0.15"BSD16Rubber/Steel0.5"5094059A25100000
    1 1/2"No. 419/64"0.313"0.265"0.175"BSD16Rubber/Steel0.5"5090628A28800000
    2"No. 37/32"0.313"0.28"0.15"BSD16Rubber/Steel0.5"2590628A29000000
     
    No. 12 Screw Size
    3/4"No. 39/32"0.313"0.255"0.21"BSD14Rubber/Steel0.563"5090628A2970000
    7/8"No. 49/32"0.313"0.285"0.21"CSD24Rubber/Steel0.563"5090628A32100000
    1"No. 21/2"0.313"0.34"0.14"BSD14Rubber/Steel0.563"2590628A29600000
    1 1/4"No. 21/2"0.313"0.38"0.14"BSD14Rubber/Steel0.563"5090628A29800000
    1 1/4"No. 4.51/2"0.313"0.285"3/8"CSD24Rubber/Steel0.563"2590628A32300000
    1 1/4"No. 545/64"0.313"0.285"1/2"CSD24Rubber/Steel0.563"2590628A33100000
    1 1/2"No. 21/2"0.313"0.38"0.14"BSD14Rubber/Steel0.563"2590628A30100000
    1 1/2"No. 39/32"0.313"0.295"0.187"BSD14Rubber/Steel0.563"5094059A29900000
    1 1/2"No. 4.50.426"0.313"0.303"3/8"CSD24Rubber/Steel0.563"1090628A32600000
    1 1/2"No. 545/64"0.313"0.285"1/2"CSD24Rubber/Steel0.563"1090628A33300000
    2"No. 21/2"0.313"0.34"0.14"BSD14Rubber/Steel0.563"1090628A3030000
    2"No. 545/64"0.313"0.285"1/2"CSD24Rubber/Steel0.563"1090628A33500000
    2 1/2"No. 31/4"0.313"0.34"0.187"BSD14Rubber/Steel0.563"2590628A30500000
    3"No. 39/32"0.313"0.273"0.187"BSD14Rubber/Steel0.563"1090628A30700000
    3"No. 521/32"0.313"0.305"1/2"CSD24Rubber/Steel0.563"1090628A34000000
    4"No. 39/32"0.313"0.255"0.21"BSD14Rubber/Steel0.563"1090628A3110000
     
    1/4" Screw Size
    7/8"No. 15/16"0.375"0.341"0.048"BSD14Rubber/Steel0.625"1094059A6150000
    7/8"No. 15/16"0.375"0.38"0.048"BSD14Rubber/Steel0.563"2590628A54100000
    1"No. 35/16"0.375"0.405"0.21"BSD14Rubber/Steel0.563"2590628A54200000
    1 1/2"No. 35/16"0.375"0.405"0.21"BSD14Rubber/Steel0.563"2590628A54600000
    2"No. 35/16"0.375"0.323"0.21"BSD14Rubber/Steel0.563"2590628A64500000
    3"No. 35/16"0.375"0.36"0.21"BSD14Rubber/Steel0.625"1090628A64700000
    4"No. 35/16"0.375"0.36"0.21"BSD14Rubber/Steel0.625"1090628A65200000
     
    Corrosion-Resistant-Coated Steel with 18-8 Stainless Steel Head
     
    No. 12 Screw Size
    1"No. 21/2"0.313"0.35"0.14"BSD14Rubber/Steel0.438"2595135A21000000
    1 1/4"No. 21/2"0.313"0.35"0.14"BSD14Rubber/Steel0.438"2595135A21500000
    1 1/2"No. 21/2"0.313"0.35"0.14"BSD14Rubber/Steel0.438"2595135A22000000
    2"No. 545/64"0.313"0.35"0.5"CSD24Rubber/Steel0.438"1095135A53000000
     
    1/4" Screw Size
    7/8"No. 15/16"0.313"0.35"0.048"BSD14Rubber/Steel0.438"2595135A61500000
    1 1/8"No. 15/16"0.313"0.35"0.048"BSD14Rubber/Steel0.438"2595135A62500000
     

    Sealing Stainless Steel Flanged Hex Head Drilling Screws with Washer

    Image of Product. Front orientation. Tapping Screws. Sealing Stainless Steel Flanged Hex Head Drilling Screws with Washer.
    These corrosion-resistant screws drill, drive, and create a watertight seal all in one shot. The rubber-bonded washer compresses to keep out moisture and spreads the load to prevent crushing thin metal. Use a nutdriver or socket to turn the hex head.
    Length is measured from under the head.
    Zinc-Plated 410 Stainless Steel—With a layer of zinc for added corrosion resistance, these screws are tougher and more wear resistant than other stainless steel screws.
    Drill
    Tip
    Head
    Lg.
    Point
    Size
    Lg.
    Wd.
    Ht.
    Max. Drilling
    Thk.
    Tapping
    Screw Type
    Approx. Threads
    per In.
    Washer Material
    Washer
    OD
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated 410 Stainless Steel
     
    No. 8 Screw Size
    1/2"No. 23/16"0.25"0.211"0.098"BSD18Rubber/Stainless Steel
    0.5"2594058A105000000
    3/4"No. 23/16"0.25"0.211"0.098"BSD18Rubber/Stainless Steel
    0.5"2594058A11000000
    1"No. 23/16"0.25"0.29"0.098"BSD18Rubber/Stainless Steel
    0.5"2594058A1110000
    1 1/4"No. 23/16"0.25"0.29"0.098"BSD18Rubber/Stainless Steel
    0.5"2594058A11200000
     
    No. 10 Screw Size
    5/8"No. 31/4"0.313"0.221"0.15"BSD16Rubber/Stainless Steel
    0.5"2594058A11700000
    3/4"No. 31/4"0.313"0.221"0.15"BSD16Rubber/Stainless Steel
    0.5"2594058A12000000
    1"No. 31/4"0.313"0.221"0.15"BSD16Rubber/Stainless Steel
    0.5"2594058A12500000
    1 1/4"No. 31/4"0.313"0.3"0.15"BSD16Rubber/Stainless Steel
    0.5"2594058A1270000
    1 1/2"No. 31/4"0.313"0.3"0.15"BSD16Rubber/Stainless Steel
    0.5"2594058A12900000
    2"No. 31/4"0.313"0.3"0.15"BSD16Rubber/Stainless Steel
    0.5"2594058A13100000
     
    No. 12 Screw Size
    3/4"No. 39/32"0.313"0.256"0.187"BSD14Rubber/Stainless Steel
    0.563"2594058A29400000
    1"No. 39/32"0.313"0.256"0.187"BSD14Rubber/Stainless Steel
    0.563"2594058A29600000
    1 1/4"No. 39/32"0.313"0.256"0.187"BSD14Rubber/Stainless Steel
    0.563"1094058A2970000
    1 1/4"No. 49/32"0.313"0.32"0.21"CSD24Rubber/Stainless Steel
    0.563"1094058A2990000
    1 1/4"No. 545/64"0.313"0.256"1/2"CSD24Rubber/Stainless Steel
    0.563"1094058A30100000
    1 1/2"No. 39/32"0.313"0.256"0.187"BSD14Rubber/Stainless Steel
    0.563"1094058A2980000
    2"No. 39/32"0.313"0.32"0.187"BSD14Rubber/Stainless Steel
    0.563"1094058A3110000
    2"No. 545/64"0.313"0.32"1/2"CSD24Rubber/Stainless Steel
    0.563"594058A3210000
    2 1/2"No. 39/32"0.313"0.32"0.187"BSD14Rubber/Stainless Steel
    0.563"1094058A3150000
    3"No. 39/32"0.313"0.32"0.187"BSD14Rubber/Stainless Steel
    0.563"1094058A31900000
     
    1/4" Screw Size
    3/4"No. 35/16"0.375"0.291"0.21"BSD14Rubber/Stainless Steel
    0.625"1094058A5400000
    7/8"No. 15/16"0.313"0.291"0.048"BSD14Rubber/Stainless Steel
    0.625"1094058A54100000
    1"No. 35/16"0.375"0.291"0.21"BSD14Rubber/Stainless Steel
    0.625"1094058A5420000
    1 1/4"No. 35/16"0.375"0.291"0.21"BSD14Rubber/Stainless Steel
    0.625"1094058A5430000
    1 1/2"No. 35/16"0.375"0.291"0.21"BSD14Rubber/Stainless Steel
    0.625"1094058A54400000
    2"No. 35/16"0.375"0.291"0.21"BSD14Rubber/Stainless Steel
    0.625"1094058A54800000
    2 1/2"No. 35/16"0.375"0.291"0.21"BSD14Rubber/Stainless Steel
    0.625"1094058A55000000
    3"No. 35/16"0.375"0.291"0.21"BSD14Rubber/Stainless Steel
    0.625"1094058A55500000
    4"No. 35/16"0.375"0.355"0.21"BSD14Rubber/Stainless Steel
    0.625"594058A5590000
     

    Screws for Joining Sheet Metal to Wood

    Image of Product. Front orientation. Tapping Screws. Screws for Joining Sheet Metal to Wood.
    Secure thin metal roofing and siding panels to wooden framing in post-frame buildings. These screws have a sharp tip to pierce metal and deep, widely spaced threads to grip wood. They resist pullout, even in high winds or under heavy vibration. The sealing washer keeps out water to prevent leaks.
    Length is measured from under the head.
    Corrosion-Resistant-Coated Steel—The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments.
    Head
    Lg.
    Wd.
    Ht.
    Tapping
    Screw Type
    Approx. Threads
    per In.
    Drill Bit
    Size
    Washer
    Material
    Washer
    OD
    Pkg.
    Qty.
    Pkg.
    Corrosion-Resistant-Coated Steel
     
    No. 9 Screw Size
    1"0.25"0.16"A15Rubber/Steel0.472"10098392A110000000
    1 1/2"0.25"0.16"A15Rubber/Steel0.472"5098392A1200000
    2"0.25"0.16"A15Rubber/Steel0.472"5098392A1300000
    2 1/2"0.25"0.16"A15Rubber/Steel0.472"5098392A14000000
    3"0.25"0.16"A15Rubber/Steel0.472"2598392A1500000
     
    No. 10 Screw Size
    1"0.25"0.169"Needle1621 Ga.
    Rubber/Steel0.45"10098392A4800000
    2 1/2"0.25"0.169"Needle1221 Ga.
    Rubber/Steel0.45"5098392A6100000
    3"0.25"0.169"Needle1221 Ga.
    Rubber/Steel0.45"5098392A6500000
     
    No. 14 Screw Size
    1 1/2"0.313"0.15"1710Rubber/Steel0.593"2598392A1600000
     

    Sealing Steel Hex Head Screws with Washer for Sheet Metal

    Image of Product. Front orientation. Tapping Screws. Sealing Steel Hex Head Screws with Washer for Sheet Metal.
    Image of Product. Back orientation. Tapping Screws. Sealing Steel Hex Head Screws with Washer for Sheet Metal.
    Create a tight seal to prevent leaks through sheet metal panels. These screws have a rubber-bonded washer to keep out fluids and distribute pressure. The hex head gives you a firm, high-torque grip with a nutdriver or socket. A 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 under the head.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Head
    Lg.
    Wd.
    Ht.
    Tapping
    Screw Type
    Approx. Threads
    per In.
    Drill Bit
    Size
    Washer
    Material
    Washer
    OD
    Washer
    Thk.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 14 Screw Size
    5/8"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"2590066A31200000
    3/4"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"5090066A31300000
    1"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"5090066A31500000
    1 1/4"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"5090066A31600000
    1 1/2"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"5090066A31700000
    2"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"2590066A31900000
    2 1/2"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"2590066A32100000
    3"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"2590066A32300000
    4"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"1090066A32400000
    5"0.375"0.181"A105.5 mm
    Rubber/Steel0.625"0.101"590066A3270000
     
    No. 17 Screw Size
    3/4"0.375"0.181"AB101/4"
    Rubber/Steel0.625"0.101"2590066A8210000
    1"0.375"0.181"AB101/4"
    Rubber/Steel0.625"0.101"2590066A82300000
     

    Sealing Stainless Steel Hex Head Screws with Washer for Sheet Metal

    Image of Product. Front orientation. Tapping Screws. Sealing Stainless Steel Hex Head Screws with Washer for Sheet Metal.
    Image of Product. Back orientation. Tapping Screws. Sealing Stainless Steel Hex Head Screws with Washer for Sheet Metal.
    These corrosion-resistant screws prevent leaks through sheet metal panels. Their rubber-bonded washer seals out fluids and distributes pressure. The hex head gives you a firm, high-torque grip with a nutdriver or socket. A 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 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.
    Head
    Lg.
    Wd.
    Ht.
    Tapping
    Screw Type
    Approx. Threads
    per In.
    Drill Bit
    Size
    Washer Material
    Washer
    OD
    Washer
    Thk.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    No. 14 Screw Size
    3/4"0.375"0.181"A105.5 mm
    Rubber/Stainless Steel
    0.625"0.101"1091644A31300000
    1"0.375"0.181"A105.5 mm
    Rubber/Stainless Steel
    0.625"0.101"1091644A3150000
    1 1/2"0.375"0.181"A105.5 mm
    Rubber/Stainless Steel
    0.625"0.101"1091644A31700000
    2"0.375"0.181"A105.5 mm
    Rubber/Stainless Steel
    0.625"0.101"1091644A31900000
    2 1/2"0.375"0.181"A105.5 mm
    Rubber/Stainless Steel
    0.625"0.101"591644A3210000
    3"0.375"0.181"A105.5 mm
    Rubber/Stainless Steel
    0.625"0.101"591644A32300000
    4"0.375"0.181"A105.5 mm
    Rubber/Stainless Steel
    0.625"0.101"191644A3260000
     
    No. 17 Screw Size
    3/4"0.375"0.181"AB101/4"
    Rubber/Stainless Steel
    0.625"0.101"1091644A82100000
    1"0.375"0.181"AB101/4"
    Rubber/Stainless Steel
    0.625"0.101"1091644A82500000
     

    Sealing Stainless Steel Phillips Rounded Head Blunt Screws for Sheet Metal

    Image of Product. Back orientation. Tapping Screws. Sealing Stainless Steel Phillips Rounded Head Blunt Screws for Sheet Metal.
    Create a tight, corrosion-resistant joint that prevents leaks. These screws have a bonded washer under the head to keep out fluids and distribute pressure. With a blunt tip instead of a point, they reduce the chance of damaging sheet metal. Install in a drilled hole and the fine threads form a strong hold. The Phillips drive handles enough torque to keep drivers from slipping.
    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.
    Head
    Lg.
    Dia.
    Ht.
    Tapping
    Screw Type
    Drive
    Size
    Approx. Threads
    per In.
    Drill Bit
    Size
    Shank Cross
    Section
    O-Ring
    Material
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    No. 4 Screw Size
    1/4"0.219"0.068"BNo. 12444 Ga.
    RoundRubber
    1093035A334000000
    5/16"0.219"0.068"BNo. 12444 Ga.
    RoundRubber
    1093035A33100000
    3/8"0.219"0.068"BNo. 12444 Ga.
    RoundRubber
    1093035A33600000
    1/2"0.219"0.068"BNo. 12444 Ga.
    RoundRubber
    1093035A33900000
    5/8"0.219"0.068"BNo. 12444 Ga.
    RoundRubber
    1093035A34200000
    3/4"0.219"0.068"BNo. 12444 Ga.
    RoundRubber
    1093035A34400000
     
    No. 6 Screw Size
    1/4"0.27"0.082"BNo. 22032 Ga.
    RoundRubber
    1093035A41700000
    5/16"0.27"0.082"BNo. 22032 Ga.
    RoundRubber
    1093035A42000000
    3/8"0.27"0.082"BNo. 22032 Ga.
    RoundRubber
    1093035A42200000
    1/2"0.27"0.082"BNo. 22032 Ga.
    RoundRubber
    1093035A42600000
    5/8"0.27"0.082"BNo. 22032 Ga.
    RoundRubber
    1093035A43000000
    3/4"0.27"0.082"BNo. 22032 Ga.
    RoundRubber
    1093035A43300000
     
    No. 8 Screw Size
    1/4"0.322"0.096"BNo. 21829 Ga.
    RoundRubber
    1093035A50600000
    3/8"0.322"0.096"BNo. 21829 Ga.
    RoundRubber
    1093035A51300000
    1/2"0.322"0.096"BNo. 21829 Ga.
    RoundRubber
    1093035A51700000
    5/8"0.322"0.096"BNo. 21829 Ga.
    RoundRubber
    1093035A52200000
    3/4"0.322"0.096"BNo. 21829 Ga.
    RoundRubber
    1093035A52500000
    1"0.322"0.096"BNo. 21829 Ga.
    RoundRubber
    1093035A52800000
     

    Stainless Steel Hex Head Screws for Joining Plastic to Wood

    Image of Product. Front orientation. Tapping Screws. Stainless Steel Hex Head Screws for Joining Plastic to Wood.
    Tighten these corrosion-resistant screws with a nutdriver or socket to mount plastic panels. Wings under the head cut a hole slightly larger than the threads, so the plastic can expand and contract as temperatures change. The threads engage only with the wood below, leaving space for the plastic. A washer made from aluminum and rubber bonded to steel adds a watertight seal.
    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.
    Wd.
    Ht.
    Approx. Threads
    per In.
    Washer Material
    Washer
    OD
    Washer
    Thk.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    No. 12 Screw Size
    1 1/4"0.25"0.136"11Aluminum/Rubber/Steel0.551"0.13"2592879A173000000
    1 3/4"0.25"0.136"11Aluminum/Rubber/Steel0.551"0.13"2592879A17600000
    2"0.25"0.136"11Aluminum/Rubber/Steel0.551"0.13"2592879A17800000
     

    Steel Rounded Head Screws for Joining Plastic to Wood

    Image of Product. Front orientation. Tapping Screws. Steel Rounded Head Screws for Joining Plastic to Wood.
    Mount plastic panels to wood with screws that prevent cracking and warping. Wings under the head cut a hole slightly larger than the threads, so the plastic can expand and contract as temperatures change. The threads engage only with the wood below, leaving space for the plastic. Screws have a washer made from aluminum and rubber bonded to steel for a watertight seal. The Phillips drive handles enough torque to keep drivers from slipping and the rounded head creates 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.
    Approx. Threads
    per In.
    Washer Material
    Washer
    OD
    Washer
    Thk.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 12 Screw Size
    1 1/4"0.438"0.075"11Aluminum/Rubber/Steel0.551"0.13"2592879A167000000
    2"0.438"0.075"11Aluminum/Rubber/Steel0.551"0.13"2592879A17000000
     

    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
     

    Steel Hex Head Screws for Joining Plastic to Wood

    Image of Product. Front orientation. Tapping Screws. Steel Hex Head Screws for Joining Plastic to Wood.
    Use the high torque of a nutdriver or socket to mount plastic panels to wood without cracking or warping them. Wings under the head cut a hole slightly larger than the threads, so the plastic can expand and contract as temperatures change. The threads engage only with the wood below, leaving space for the plastic. A washer made from aluminum and rubber bonded to steel adds a watertight seal.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Head
    Lg.
    Wd.
    Ht.
    Approx. Threads
    per In.
    Washer Material
    Washer
    OD
    Washer
    Thk.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    No. 12 Screw Size
    1 1/4"0.25"0.136"11Aluminum/Rubber/Steel0.551"0.13"2592879A161000000
    2"0.25"0.136"11Aluminum/Rubber/Steel0.551"0.13"2592879A16400000
     
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