McMaster-Carr logo
    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)
    51 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.
    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.
    Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    High-Strength 17-4 PH Stainless Steel—The strongest stainless steel nuts we offer, these are comparable in strength to Grade 8 steel. Use them in high-stress applications, such as fastening structural parts and pump components. They won’t rust in wet and outdoor environments, but they can’t handle the harsh chemicals and acids that 316 stainless steel can.
    Thread
    Size
    Wd.
    Ht.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		7/16"7/32"ASTM F5945000000000000000
    1/4"-28
    		7/16"7/32"ASTM F594500000000000000
    5/16"-18
    		1/2"17/64"ASTM F594500000000000000
    5/16"-24
    		1/2"17/64"ASTM F594500000000000000
    3/8"-16
    		9/16"21/64"ASTM F594250000000000000
    3/8"-24
    		9/16"21/64"ASTM F594250000000000000
    7/16"-14
    		11/16"3/8"ASTM F594100000000000000
    7/16"-20
    		11/16"3/8"ASTM F594100000000000000
    1/2"-13
    		3/4"7/16"ASTM F594100000000000000
    1/2"-20
    		3/4"7/16"ASTM F594100000000000000
    9/16"-12
    		7/8"31/64"ASTM F594100000000000000
    5/8"-11
    		15/16"35/64"ASTM F59450000000000000
    5/8"-18
    		15/16"35/64"ASTM F59450000000000000
    3/4"-10
    		1 1/8"41/64"ASTM F59450000000000000
    3/4"-16
    		1 1/8"41/64"ASTM F59450000000000000
    7/8"-9
    		1 5/16"3/4"ASTM F59410000000000000
    7/8"-14
    		1 5/16"3/4"ASTM F59410000000000000
    1"-8
    		1 1/2"55/64"ASTM F59410000000000000
    1"-12
    		1 1/2"55/64"ASTM F59410000000000000
    1"-14
    		1 1/2"55/64"ASTM F59410000000000000
    1 1/8"-7
    		1 11/16"31/32"ASTM F59410000000000000
    1 1/4"-7
    		1 7/8"1 1/16"ASTM F59410000000000000
    1 1/2"-6
    		2 1/4"1 9/32"ASTM F594100000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    		7/16"7/32"ASTM F594500000000000000
    1/4"-28
    		7/16"7/32"ASTM F594500000000000000
    5/16"-18
    		1/2"17/64"ASTM F594250000000000000
    5/16"-24
    		1/2"17/64"ASTM F594250000000000000
    3/8"-16
    		9/16"21/64"ASTM F594250000000000000
    3/8"-24
    		9/16"21/64"ASTM F594250000000000000
    7/16"-14
    		11/16"3/8"ASTM F594100000000000000
    7/16"-20
    		11/16"3/8"ASTM F594100000000000000
    1/2"-13
    		3/4"7/16"ASTM F59450000000000000
    1/2"-20
    		3/4"7/16"ASTM F59450000000000000
    9/16"-12
    		7/8"31/64"ASTM F59450000000000000
    5/8"-11
    		15/16"35/64"ASTM F59450000000000000
    5/8"-18
    		15/16"35/64"ASTM F59450000000000000
    3/4"-10
    		1 1/8"41/64"ASTM F59410000000000000
    3/4"-16
    		1 1/8"41/64"ASTM F59410000000000000
    7/8"-9
    		1 5/16"3/4"ASTM F59410000000000000
    7/8"-14
    		1 5/16"3/4"ASTM F59410000000000000
    1"-8
    		1 1/2"55/64"ASTM F59410000000000000
    1"-12
    		1 1/2"55/64"ASTM F594100000000000000
    1"-14
    		1 1/2"55/64"ASTM F59410000000000000
    1 1/8"-7
    		1 11/16"31/32"ASTM F59410000000000000
    1 1/4"-7
    		1 7/8"1 1/16"ASTM F594100000000000000
    1 1/2"-6
    		2 1/4"1 9/32"ASTM F594100000000000000
     
    High-Strength 17-4 PH Stainless Steel
    1/4"-20
    		7/16"7/32"ASTM F594100000000000000
    5/16"-18
    		1/2"17/64"ASTM F594100000000000000
    3/8"-16
    		9/16"21/64"ASTM F594100000000000000
    1/2"-13
    		3/4"7/16"ASTM F594100000000000000
    3/4"-10
    		1 1/8"41/64"ASTM F594100000000000000
     
    back to top