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    20 Products
    About Hex Nuts
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    Choose a hex nut with the right profile, material, and strength for your application.

    High-Profile Hex Nuts

    Image of Product. Front orientation. Hex Nuts. High-Profile Hex Nuts.
    Slightly taller than standard-profile hex nuts, these have a larger gripping area so your wrench or socket won't slip off as you tighten them. They're often used in vehicles and machinery where fasteners can be difficult to reach.
    Low-Strength Steel
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M2 × 0.4 mm42Class 625000000000000000
    M2.5 × 0.45 mm52.5Class 62500000000000000
    M3 × 0.5 mm5.53Class 6500000000000000
    M4 × 0.7 mm74Class 6500000000000000
    M5 × 0.8 mm85Class 65000000000000000
     

    Hex Nut Assortments

    Image of Product. Front orientation. Hex Nuts. Hex Nut Assortments.
    Image of Product. Front orientation. Hex Nuts. Hex Nut Assortments.
    With a range of sizes on hand, you can use these assortments to fasten a variety of machinery and equipment.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Sizes
    Included
    No. of
    Pieces
    Specs.
    Met
    Container
    Type
    Each
    Zinc-Plated Steel Class 6, Class 8
    M3 to M20720DIN 934Plastic Box0000000000000000
     

    Spring-Stop Locknuts

    Image of Product. Front orientation. Locknuts. Spring-Stop Locknuts.
    These locknuts withstand heavy vibration similar to distorted-thread nuts, and you can use them over and over. The prongs at the top bend when tightened to create tension for a secure hold. As you remove the locknut, the prongs spring back to their original shape, so you can install the nut again without losing holding power. Also known as Fuji locknuts.
    Low-Strength Steel
    Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M5 × 0.8 mm84.6Class 610000000000000000
    M6 × 1 mm105.1Class 61000000000000000
    M8 × 1.25 mm127.3Class 61000000000000000
    M10 × 1.25 mm148.5Class 650000000000000
    M10 × 1.5 mm178.5Class 61000000000000000
    M12 × 1.25 mm1710.4Class 610000000000000
     

    Nylon-Insert Cap Nuts

    Get the protection of a cap nut with the vibration resistance of a locknut. These nuts not only conceal protruding screw threads, they also have a nylon insert that grips the screw to prevent loosening from moderate vibration. However, the insert may become brittle if exposed to high temperatures. Nuts are reusable a handful of times, but their holding power decreases with each use.
    Low-Strength Steel
    Image of Product. Bottom orientation. Cap Nuts. Nylon-Insert Cap Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Thread Size
    Thread
    Dp., mm
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M4 × 0.7 mm2.379.6Class 6DIN 98624550000000000000000
    M5 × 0.8 mm3.5810.5Class 6DIN 986245250000000000000
    M6 × 1 mm3.91012Class 6DIN 986245250000000000000
    M8 × 1.25 mm5.21314Class 6DIN 9862452500000000000000
    M10 × 1.5 mm6.41618Class 6DIN 9862451000000000000000
    M12 × 1.75 mm8.31823Class 6DIN 98624550000000000000
    M16 × 2 mm11.32428Class 6DIN 98624510000000000000
    M20 × 2.5 mm13.53035Class 6DIN 98624510000000000000
     
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