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    22 Products
    About Hex Nuts
    industrial info icon

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

    Mil. Spec. Hex Nuts

    These nuts are manufactured and tested to strict U.S. military standards for material and construction.
    Medium-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Mil. Spec. Hex Nuts.
    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.
    Cadmium Yellow-Chromate-Plated Steel— The plating creates a barrier against rust, so these nuts are suitable for most wet and outdoor environments. They also thread on smoothly without sticking.
    Thread
    Size
    Wd.
    Ht.
    Mil.
    Spec.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Cadmium Yellow-Chromate-Plated Steel
    1/4"-20
    		7/16"7/32"MS51967-2SAE Grade 5
    		Fed. Spec. FF-N-836
    		2594575A110000000
    5/16"-18
    		1/2"17/64"MS51967-5SAE Grade 5
    		Fed. Spec. FF-N-836
    		2594575A23000000
    3/8"-16
    		9/16"21/64"MS51967-8SAE Grade 5
    		Fed. Spec. FF-N-836
    		1094575A3500000
    7/16"-14
    		11/16"3/8"MS51967-11SAE Grade 5
    		Fed. Spec. FF-N-836
    		594575A7300000
    1/2"-13
    		3/4"7/16"MS51967-14SAE Grade 5
    		Fed. Spec. FF-N-836
    		1094575A47000000
    9/16"-12
    		7/8"31/64"MS51967-17SAE Grade 5
    		Fed. Spec. FF-N-836
    		594575A75000000
    5/8"-11
    		15/16"35/64"MS51967-20SAE Grade 5
    		Fed. Spec. FF-N-836
    		594575A51000000
    3/4"-10
    		1 1/8"41/64"MS51967-23SAE Grade 5
    		Fed. Spec. FF-N-836
    		194575A6300000
     
    High-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Mil. Spec. Hex Nuts.
    Rated Grade 8, Grade C, 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.
    Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Cadmium Yellow-Chromate-Plated Steel— The plating creates a barrier against rust, so these nuts are suitable for most wet and outdoor environments. They also thread on smoothly without sticking.
    Thread
    Size
    Wd.
    Ht.
    Mil.
    Spec.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Steel
    1/4"-20
    		7/16"7/32"MS51967-3SAE Grade 8
    		Fed. Spec. FF-N-836
    		594191A11100000
    5/16"-18
    		1/2"17/64"MS51967-6SAE Grade 8
    		Fed. Spec. FF-N-836
    		594191A1130000
    3/8"-16
    		9/16"21/64"MS51967-9SAE Grade 8
    		Fed. Spec. FF-N-836
    		194191A1150000
    7/16"-14
    		11/16"3/8"MS51967-12SAE Grade 8
    		Fed. Spec. FF-N-836
    		194191A1170000
    1/2"-13
    		3/4"7/16"MS51967-15SAE Grade 8
    		Fed. Spec. FF-N-836
    		194191A1190000
    5/8"-11
    		15/16"35/64"MS51967-21SAE Grade 8
    		Fed. Spec. FF-N-836
    		194191A12200000
    3/4"-10
    		1 1/8"41/64"MS51967-24SAE Grade 8
    		Fed. Spec. FF-N-836
    		194191A12400000
     
    Cadmium Yellow-Chromate-Plated Steel
    1/4"-20
    		7/16"7/32"MS51967-3SAE Grade 8
    		Fed. Spec. FF-N-836
    		2594191A10000000
    5/16"-18
    		1/2"17/64"MS51967-6SAE Grade 8
    		Fed. Spec. FF-N-836
    		2594191A20000000
    3/8"-16
    		9/16"21/64"MS51967-9SAE Grade 8
    		Fed. Spec. FF-N-836
    		1094191A3000000
    7/16"-14
    		11/16"3/8"MS51967-12SAE Grade 8
    		Fed. Spec. FF-N-836
    		594191A4000000
    1/2"-13
    		3/4"7/16"MS51967-15SAE Grade 8
    		Fed. Spec. FF-N-836
    		594191A5000000
    5/8"-11
    		15/16"35/64"MS51967-21SAE Grade 8
    		Fed. Spec. FF-N-836
    		594191A80000000
    3/4"-10
    		1 1/8"41/64"MS51967-24SAE Grade 8
    		Fed. Spec. FF-N-836
    		194191A6500000
     
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