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    42 Products

    12-Point-Drive Flange Nuts

    The star-shaped head has more points of contact than a hex head nut, so you can achieve a better grip and a tighter fit without flattening the sides of the nut. Great for cramped spaces without a lot of clearance, these nuts twist on from any angle with a standard wrench. They have a flange that distributes pressure evenly across the mounting surface without the need for a separate washer. Also known as collar nuts.
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Flange Nuts. 12-Point-Drive Flange Nuts.
    High-Temperature A286 Stainless Steel—Stronger than 316 stainless steel and withstand high temperatures up to 1500° F. These nuts resist corrosion from chemicals, such as bleach and chlorine, but they won't hold up to salt water as well as 316 stainless steel.
    Flange
    Thread Size
    Wd.
    Ht.
    Dia.
    Thk.
    Each
    High-Temperature A286 Stainless Steel
    1/4"-20
    5/16"19/64"7/16"0.06"90997A70000000
    1/4"-28
    5/16"19/64"7/16"0.06"90997A7500000
    5/16"-18
    3/8"11/32"17/32"0.08"90997A8000000
    5/16"-24
    3/8"11/32"17/32"0.08"90997A8500000
    3/8"-16
    7/16"25/64"5/8"0.09"90997A9000000
    3/8"-24
    7/16"25/64"5/8"0.09"90997A9500000
    7/16"-14
    1/2"7/16"45/64"0.11"90997A9510000
    7/16"-20
    1/2"7/16"45/64"0.11"90997A9520000
    1/2"-13
    9/16"33/64"53/64"0.13"90997A9530000
    1/2"-20
    9/16"33/64"53/64"0.13"90997A9540000
    9/16"-18
    11/16"5/8"31/32"0.13"90997A1100000
    M6 × 1 mm8 mm6.1 mm10.5 mm1.6 mm90997A2100000
    M7 × 1 mm9 mm7 mm12 mm1.6 mm90997A2200000
    M8 × 1 mm10 mm8.1 mm15.9 mm1.6 mm90997A2300000
    M8 × 1.25 mm10 mm8.1 mm13.6 mm1.6 mm90997A2400000
    M9 × 1 mm11 mm9.5 mm15.6 mm1.6 mm90997A2500000
    M10 × 1 mm12 mm10.2 mm17.8 mm3.2 mm90997A2600000
    M10 × 1.25 mm12 mm10.2 mm17.8 mm3.2 mm90997A2700000
    M10 × 1.5 mm12 mm10.2 mm17.8 mm3.2 mm90997A2800000
    M11 × 1.25 mm13 mm11 mm17.8 mm3.2 mm90997A2900000
    M11 × 1.25 mm14 mm13 mm20.9 mm3.2 mm90997A3100000
    M12 × 1 mm14 mm12.8 mm19.1 mm3.2 mm90997A3200000
    M12 × 1.25 mm14 mm12.8 mm19.1 mm3.2 mm90997A3400000
    M12 × 1.25 mm14 mm12.8 mm20.9 mm3.2 mm90997A3300000
    M12 × 1.75 mm14 mm12.8 mm20.9 mm3.2 mm90997A3500000
     

    Mil. Spec. Distorted-Thread Flange Nuts

    Not only do these have the strongest hold of all the flange nuts we offer, they are also manufactured and tested to strict U.S. military standards for material and construction. They have irregularly shaped threads that grip the screw to resist loosening in high-vibration applications. The threads prevent the nut from backing out, but they also increase the effort to install and remove. To get these nuts off, you may need special tools, such as an impact wrench or propane torch, so they are not reusable. Nuts have a flange that distributes pressure evenly across the mounting surface without the need for a separate washer. They are ideal for securing screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts. Also known as collar nuts.
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Flange Nuts. Mil. Spec. Distorted-Thread Flange Nuts.
    High-Temperature A286 Stainless Steel—Stronger than 316 stainless steel and withstand high temperatures up to 1500° F. These nuts resist corrosion from chemicals, such as bleach and chlorine, but they won't hold up to salt water as well as 316 stainless steel.
    High-Temperature Silver-Plated A286 Stainless Steel—The silver plating reduces friction during installation, so these nuts thread on smoother than others. They are stronger than 316 stainless steel and withstand temperatures up to 800° F. Nuts resist corrosion from chemicals, such as bleach and chlorine, but won't hold up to salt water as well as 316 stainless steel.
    Flange
    Thread
    Size
    Wd.
    Ht.
    Dia.
    Thk.
    Mil.
    Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    High-Temperature A286 Stainless Steel
    2-56
    1/8"3/32"0.167"0.01"NAS1291C02M598892A800000000
    4-40
    5/32"1/8"0.206"0.01"NAS1291C04M198892A1210000
    6-32
    3/16"9/64"0.244"0.01"NAS1291C06M198892A1110000
    8-32
    7/32"3/16"0.29"0.02"NAS1291C08M198892A1220000
    10-32
    1/4"3/16"0.33"0.02"NAS1291C3M198892A1120000
    1/4"-28
    5/16"7/32"0.42"0.02"NAS1291C4M198892A1130000
    5/16"-24
    3/8"17/64"0.52"0.03"NAS1291C5M198892A1230000
    3/8"-24
    7/16"9/32"0.62"0.03"NAS1291C6M198892A11400000
    7/16"-20
    1/2"21/64"0.708"0.04"NAS1291C7M198892A11500000
    1/2"-20
    9/16"13/32"0.814"0.04"NAS1291C8M198892A11600000
     
    High-Temperature Silver-Plated A286 Stainless Steel
    4-40
    5/32"1/8"0.206"0.03"MS21043-04598892A10000000
    6-32
    3/16"9/64"0.244"0.03"MS21043-06598892A2000000
    8-32
    7/32"3/16"0.29"0.03"MS21043-08598892A30000000
    10-32
    1/4"3/16"0.33"0.03"MS21043-3598892A4000000
    1/4"-28
    5/16"7/32"0.42"0.04"MS21043-4598892A50000000
    5/16"-24
    3/8"17/64"0.52"0.04"MS21043-5198892A6000000
    3/8"-24
    7/16"9/32"0.62"0.04"MS21043-6198892A7000000
     
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