McMaster-Carr logo
    Filter by
    Fastener Strength Grade/Class
    Industrial Info Compare
    Specifications Met
    Fastener Strength Rating
    Thread Spacing
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Snippet
    DFARS Specialty Metals
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    Help me decide (beta)
    17 Products
    About Hex Nuts
    industrial info icon

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

    Heavy-Profile Hex Nuts

    About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.
    High-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    Rated Grade 8 or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Material Certificate—Nuts include a report with a traceable lot number and a description of their chemical and physical properties.
    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
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    Steel
    M12 × 1.75 mm2210Class 10
    		DIN 6915, ISO 4775Material Certificate
    		591872A120000000
    M16 × 2 mm2713Class 10
    		DIN 6915, ISO 4775—591872A2200000
    M20 × 2.5 mm3216Class 10
    		DIN 6915, ISO 4775Material Certificate
    		591872A32000000
    M24 × 3 mm4119Class 10
    		DIN 6915, ISO 4775—191872A4200000
    M30 × 3.5 mm5024Class 10
    		DIN 6915—191872A1220000
     
    Extreme-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    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
    M12 × 1.75 mm2112ASTM Grade 2H
    		ASTM A194, DIN 6915598498A10000000
    M14 × 2 mm2414ASTM Grade 2H
    		ASTM A194, DIN 6915598498A1120000
    M16 × 2 mm2717ASTM Grade 2H
    		ASTM A194, DIN 6915598498A3000000
    M18 × 2.5 mm3019ASTM Grade 2H
    		ASTM A194, DIN 6915598498A11300000
    M20 × 2.5 mm3320ASTM Grade 2H
    		ASTM A194, DIN 6915598498A50000000
    M22 × 2.5 mm3623ASTM Grade 2H
    		ASTM A194, DIN 6915198498A1140000
    M24 × 3 mm4124ASTM Grade 2H
    		ASTM A194, DIN 6915198498A6000000
    M27 × 3 mm4627ASTM Grade 2H
    		ASTM A194, DIN 6915198498A1150000
    M30 × 3.5 mm5030ASTM Grade 2H
    		ASTM A194, DIN 6915198498A70000000
    M33 × 3.5 mm5533ASTM Grade 2H
    		ASTM A194, DIN 6915198498A11600000
    M36 × 4 mm6036ASTM Grade 2H
    		ASTM A194, DIN 6915198498A80000000
    M36 × 3 mm6036ASTM Grade 2H
    		ASTM A194, DIN 6915198498A12300000
     
    back to top