McMaster-Carr logo
    Filter by
    System of Measurement
    Thread Size
    Industrial Info Compare
    Nut Type
    Industrial Info Compare
    Height
    Attribute Image
    Hex Nut Profile
    Industrial Info Compare
    Thread Type
    Thread Direction
    Industrial Info Compare
    Thread Spacing
    Industrial Info Snippet
    Panel Nut Shape
    DFARS Specialty Metals
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Drive Style
    Industrial Info Snippet
    Specifications Met
    Helical Insert Type
    Threaded Insert Type
    Handle Style
    Insert Tool Thread Type
    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)
    11 Products

    Hex Nuts

    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Image of Specification. Front orientation. Hex Nuts. Hex Nuts.

    The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    7/16"-28
    		11/16"3/8"Material Certificate
    		195621A40000000
     
    Lightweight Aluminum
    6061 Aluminum—One-third the weight of steel, these nuts are commonly used in robotics, automation, and other applications that have weight limitations. They're an alternative to stainless steel for rust resistance but are not as strong.
    Thread
    Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    6061 Aluminum
    7/16"-28
    		11/16"3/8"ASME B18.2.2190670A24900000
     

    Steel Hex Panel Nuts

    Image of Product. Front orientation. Panel Nuts. Steel Hex Panel Nuts.
    Fasten these panel nuts with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they're extremely thin for use in tight spaces such as electrical panels.
    UNEF ThreadAbout UNEF Thread
    Zinc-Plated Steel—Zinc-plated steel nuts resist corrosion in wet environments.
    Black-Oxide Steel—Black-oxide steel nuts have a dark surface color.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    7/16"-28
    		5/8"3/32"191862A11600000
     
    Black-Oxide Steel
    7/16"-28
    		5/8"3/32"194162A3600000
     

    Stainless Steel Hex Panel Nuts

    Image of Product. Front orientation. Panel Nuts. Stainless Steel Hex Panel Nuts.
    All of these stainless steel panel nuts have some chemical resistance. They can be fastened with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they are extremely thin for use in tight spaces such as electrical panels.
    UNEF ThreadAbout UNEF Thread
    18-8 Stainless Steel—18-8 stainless steel nuts have good chemical resistance. They may be mildly magnetic.
    Black-Oxide 18-8 Stainless Steel—Black-oxide 18-8 stainless steel nuts have a dark surface color.
    316 Stainless Steel—316 stainless steel nuts have excellent chemical resistance and can be used in saltwater environments.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    7/16"-28
    		5/8"3/32"191862A32000000
    7/16"-28
    		11/16"3/8"191862A5480000
     
    Black-Oxide 18-8 Stainless Steel
    7/16"-28
    		5/8"3/32"191862A5840000
     
    316 Stainless Steel
    7/16"-28
    		5/8"3/32"194177A3600000
     

    Brass Hex Panel Nuts

    Image of Product. Front orientation. Panel Nuts. Brass Hex Panel Nuts.
    These panel nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. They can be fastened with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they're extremely thin for use in tight spaces such as electrical panels.
    UNEF ThreadAbout UNEF Thread
    Nickel-Plated Brass—Nickel-plated brass panel nuts have excellent resistance to chemicals and salt water.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Brass
    7/16"-28
    		5/8"3/32"191862A22800000
     
    Nickel-Plated Brass
    7/16"-28
    		5/8"3/32"191862A5230000
     

    Spring-Loaded Helical Threaded Insert Prong Break-Off Tools

    Image of Product. Front orientation. Threaded Insert Installation Tools. Spring-Loaded Helical Threaded Insert Prong Break-Off Tools.
    Cleanly snap prongs off installed helical inserts with just one hand. Because they work faster than standard prong break-off tools, these are a good choice when you have many prongs to remove. Press your tool into an insert to trigger the spring-loaded punch and snap off the prong.
    For Standard-Length Inserts—Use these tools for inserts that are 1 to 2 times as long as the diameter.
    For Thread Size
    Each
    For Standard-Length Inserts
    7/16"-14, 7/16"-20, 7/16"-2892955A3210000000
     
    back to top