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    13 Products

    Distorted-Thread Flange Nuts

    The strongest hold of all the flange nuts we offer, these have irregularly shaped threads that grip the screw to resist loosening. The threads prevent the nut from backing out due to high vibration, 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.
    High-Strength Steel
    Image of Product. Bottom orientation. Flange Nuts. Distorted-Thread Flange Nuts.
    Rated Grade 8, Grade G, or Class 10, these are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, and motors. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Flange,
    mm
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Dia.
    Thk.
    Fastener Strength
    Grade/Class
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M6 × 1 mm107.314.21.1Class 10
    		—503528N11000000
    M8 × 1.25 mm139.417.91.2Class 10
    		—253528N1200000
    M10 × 1.5 mm1511.421.81.5Class 10
    		—103528N130000
    M12 × 1.75 mm1813.8261.8Class 10
    		—103528N1400000
    M14 × 2 mm2115.929.92.1Class 10
    		—53528N1500000
    M16 × 2 mm2418.334.52.4Class 10
    		—13528N160000
    M20 × 2.5 mm3022.442.83Class 10
    		—13528N170000
     
    Black-Oxide Steel
    M6 × 1 mm107.314.21.1Class 10
    		Material Certificate
    		253528N210000
    M8 × 1.25 mm139.417.91.2Class 10
    		Material Certificate
    		103528N220000
    M10 × 1.5 mm1511.421.81.5Class 10
    		Material Certificate
    		103528N230000
    M12 × 1.75 mm1813.8261.8Class 10
    		Material Certificate
    		103528N240000
    M14 × 2 mm2115.929.92.1Class 10
    		—53528N250000
    M16 × 2 mm2418.334.52.4Class 10
    		Material Certificate
    		13528N260000
     
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