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

    Left-Hand-Thread Heavy-Profile Hex Nuts

    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Heavy-Profile Hex Nuts.
    These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening. About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.
    Medium-Strength Steel
    These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. 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.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		1/2"15/64"SAE Grade 5
    		2590570A71000000
    3/8"-16
    		11/16"23/64"SAE Grade 5
    		1090570A7200000
    1/2"-13
    		7/8"31/64"SAE Grade 5
    		1090570A72500000
    5/8"-11
    		1 1/16"39/64"SAE Grade 5
    		590570A7300000
    3/4"-10
    		1 1/4"47/64"SAE Grade 5
    		590570A73500000
    1"-8
    		1 5/8"63/64"SAE Grade 5
    		190570A0380000
     
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