McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    17 Products
    About Hex Nuts
    industrial info icon

    Choose a hex nut with the right profile, material, and strength for your application.

    Hex Nuts

    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.
    Extreme-Strength Steel
    These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    M6 × 1 mm105Class 12DIN 93450000000000000000
    M8 × 1.25 mm136.5Class 12DIN 934250000000000000
    M10 × 1.5 mm178Class 12DIN 9341000000000000000
    M12 × 1.75 mm1910Class 12DIN 9341000000000000000
    M14 × 2 mm2211Class 12DIN 93410000000000000
    M16 × 2 mm2413Class 12DIN 934500000000000000
    M18 × 2.5 mm2715Class 12DIN 93410000000000000
    M20 × 2.5 mm3016Class 12DIN 934500000000000000
    M24 × 3 mm3619Class 12DIN 93410000000000000
    M27 × 3 mm4122Class 12DIN 934100000000000000
    M30 × 3.5 mm4624Class 12DIN 934100000000000000
    M33 × 3.5 mm5026Class 12DIN 934100000000000000
    M36 × 4 mm5529Class 12DIN 934100000000000000
    M39 × 4 mm6031Class 12DIN 934100000000000000
    M42 × 4.5 mm6534Class 12DIN 934100000000000000
    M45 × 4.5 mm7036Class 12DIN 934100000000000000
    M48 × 5 mm7538Class 12DIN 934100000000000000
     
    back to top