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    74 Products
    About Hex Nuts
    industrial info icon

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

    Thin-Profile Hex Nuts

    Image of Product. Front orientation. Hex Nuts. Thin-Profile Hex Nuts.
    About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    Medium-Strength Steel
    These Grade 5 or Class 04 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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    3/8"-16
    		9/16"7/32"SAE Grade 5
    		ASME B18.2.2100000000000000000
     
    Steel
    3/8"-16
    		9/16"7/32"SAE Grade 5
    		ASME B18.2.2500000000000000
     
    High-Strength Steel
    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.
    Zinc-Yellow-Chromate-Plated Steel—With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.
    Zinc-Flake-Coated Steel—The most durable zinc coating, zinc flake is a multilayer finish that resists wear for long-term rust protection. Similar to zinc yellow-chromate, it won't hold up to harsh chemicals like stainless steel can.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Yellow-Chromate-Plated Steel
    3/8"-16
    		9/16"7/32"SAE Grade 8
    		ASME B18.2.250000000000000000
     
    Zinc-Flake-Coated Steel
    3/8"-16
    		9/16"7/32"SAE Grade 8
    		ASME B18.2.22500000000000000
     
    Steel
    3/8"-16
    		9/16"7/32"SAE Grade 8
    		ASME B18.2.25000000000000000
     
    Low-Strength Steel
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    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.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    3/8"-16
    		9/16"7/32"SAE Grade 2
    		10000000000000000
     
    Black-Oxide Steel
    3/8"-16
    		9/16"7/32"—5000000000000000
     
    Steel
    3/8"-16
    		9/16"7/32"SAE Grade 2
    		1000000000000000
     
    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.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but 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.
    Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. Even if the coating wears off, these nuts will hold up in just about any environment, including salt water and most chemicals.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    3/8"-16
    		9/16"7/32"10000000000000000
     
    Black-Oxide 18-8 Stainless Steel
    3/8"-16
    		9/16"7/32"250000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    3/8"-16
    		9/16"7/32"250000000000000
     
    Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel
    3/8"-16
    		9/16"7/32"100000000000000
     
    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
    3/8"-16
    		9/16"7/32"ASME B18.2.25000000000000000
     
    Lightweight Corrosion-Resistant Titanium
    Grade 2 Titanium—The best of both worlds, these nuts are lightweight like aluminum and as corrosion resistant as 316 stainless steel. Because Grade 2 titanium is 99% pure, it's even more corrosion resistant than other common titanium grades, such as Grades 5 and 9. These nuts are ideal for use in chemical-processing and water-treatment facilities since they stand up to strong acids and other harsh chemicals.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Grade 2 Titanium
    3/8"-16
    		9/16"7/32"1000000000000000
     
    Bronze
    Silicon Bronze—More resistant to salt water than brass, these nuts are a good choice for marine environments. They are also stronger than brass and more resistant to abrasion and wear. Choose them for machinery with rotating parts or other applications where nearby components may rub against the nut.
    Thread
    Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Silicon Bronze
    3/8"-16
    		9/16"7/32"ASME B18.2.21000000000000000
     
    Brass
    Brass—Conductive and nonmagnetic, brass nuts are commonly used to secure electrical equipment, such as circuit board assemblies and mounting brackets, inside enclosures. They're also softer than most metals, so they won't damage other fastening components.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Brass
    3/8"-16
    		9/16"7/32"25000000000000000
     
    Plastic
    Nylon 6/6— The most common plastic nuts, these are good for general purpose fastening. They are slippery and abrasion resistant, so they thread on smoothly and stand up to daily wear and tear. Nylon will swell and weaken when exposed to moisture, so these nuts are best for dry environments.
    Temp.,
    ° F
    Thread
    Size
    Wd.
    Ht.
    Min.
    Max.
    Choose a Color
    Pkg.
    Qty.
    Pkg.
    Nylon 6/6
    3/8"-16
    		33/64"1/8"-40185
    Black
    ,
    Off-White
    		50000000000000000
     

    Left-Hand-Thread Hex Nuts

    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread 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.
    Corrosion-Resistant Stainless Steel
    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.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Highly Corrosion-Resistant 316 Stainless Steel
    3/8"-16
    		9/16"21/64"1000000000000000
     

    Thin-Profile Nylon-Insert Locknuts

    Image of Product. Front orientation. Locknuts. Thin-Profile Nylon-Insert Locknuts.
    About half the height of standard-profile locknuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against a hex nut to hold it in place. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.
    High-Strength Steel
    Rated Grade 8, Grade C, or Class 10, these locknuts are about 25% stronger than medium-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Zinc-Yellow-Chromate-Plated Steel—With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.
    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.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Zinc-Yellow-Chromate-Plated Steel
    3/8"-16
    		9/16"17/64"SAE Grade 8
    		Not Rated100000000000000000
     
    Black-Oxide Steel
    3/8"-16
    		9/16"17/64"SAE Grade 8
    		250100000000000000
     
    Low-Strength Steel
    Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Black-Zinc-Plated Steel—The dark zinc plating withstands occasional exposure to moisture while creating a finished look.
    Black-Corrosion-Resistant-Coated Steel—These nuts combine a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread
    Size
    Wd.
    Ht.
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    3/8"-16
    		9/16"17/64"22010000000000000000
     
    Black-Zinc-Plated Steel
    3/8"-16
    		9/16"17/64"220100000000000000
     
    Black-Corrosion-Resistant-Coated Steel
    3/8"-16
    		9/16"17/64"22050000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to the harsh chemicals that 316 stainless steel can.
    316 Stainless Steel—Our most corrosion-resistant nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.
    Thread
    Size
    Wd.
    Ht.
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    3/8"-16
    		9/16"17/64"2202500000000000000
     
    Black-Oxide 18-8 Stainless Steel
    3/8"-16
    		9/16"17/64"2205000000000000000
     
    316 Stainless Steel
    3/8"-16
    		9/16"17/64"2202500000000000000
     

    Thin-Heavy-Profile Hex Nuts

    About half the height of standard-profile hex nuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    Extreme-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Thin-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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    3/8"-16
    		11/16"15/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1945000000000000000
     
    Steel
    3/8"-16
    		11/16"15/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194500000000000000
     
    Low-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Thin-Heavy-Profile Hex Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    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.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Steel
    3/8"-16
    		11/16"15/64"—25000000000000000
     
    Steel
    3/8"-16
    		11/16"15/64"SAE Grade 2
    		10000000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Hex Nuts. Thin-Heavy-Profile Hex Nuts.
    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.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    3/8"-16
    		11/16"15/64"1000000000000000
     
    Brass
    Image of Product. Front orientation. Hex Nuts. Thin-Heavy-Profile Hex Nuts.
    Brass—Conductive and nonmagnetic, brass nuts are commonly used to secure electrical equipment, such as circuit board assemblies and mounting brackets, inside enclosures. They're also softer than most metals, so they won't damage other fastening components.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Brass
    3/8"-16
    		11/16"15/64"25000000000000000
     

    Jam Nuts for Turnbuckles

    Tighten these nuts against the turnbuckle body to prevent the end fitting from unscrewing.
    For Steel Turnbuckles
    Image of Product. Front orientation. Turnbuckles. Jam Nuts for Turnbuckles.
    Left- and Right-Hand
    Thread Direction
    Thread
    Size
    Wd.
    Ht.
    Includes
    Each
    Grade 2 Steel
    3/8"-16
    		9/16"7/32"One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut0000000000000
     
    For Galvanized Steel Turnbuckles
    Image of Product. Front orientation. Turnbuckles. Jam Nuts for Turnbuckles.
    Left- and Right-Hand
    Thread Direction
    Thread
    Size
    Wd.
    Ht.
    Includes
    Each
    Grade 2 Galvanized Steel
    3/8"-16
    		9/16"7/32"One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut0000000000000
     
    For 316 Stainless Steel Turnbuckles
    Image of Product. Front orientation. Turnbuckles. Jam Nuts for Turnbuckles.
    Right-Hand
    Thread Direction
    Left-Hand
    Thread Direction
    Thread
    Size
    Wd.
    Ht.
    Each
    Each
    316 Stainless Steel
    3/8"-16
    		9/16"5/16"———00000000000000
    3/8"-16
    		9/16"11/32"0000000000000———0
     

    Mil. Spec. Thin-Profile Hex Nuts

    Image of Product. Front orientation. Hex Nuts. Mil. Spec. Thin-Profile Hex Nuts.
    These nuts are manufactured and tested to strict U.S. military standards for material and construction. About half the height of standard-profile nuts, they fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    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.
    Thread
    Size
    Wd.
    Ht.
    Mil.
    Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    3/8"-16
    		9/16"7/32"MS35691-19Fed. Spec. FF-N-836
    		100000000000000
     

    Left-Hand-Thread Thin-Profile Hex Nuts

    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Thin-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 half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    Medium-Strength Steel
    These Grade 5 or Class 04 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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    3/8"-16
    		9/16"7/32"SAE Grade 5
    		50000000000000000
     
    Low-Strength Steel
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    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
    3/8"-16
    		9/16"7/32"SAE Grade 2
    		2500000000000000
     
    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.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    3/8"-16
    		9/16"7/32"500000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    3/8"-16
    		9/16"7/32"10000000000000
     
    Low-Strength Steel with Material Certificate
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    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.
    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.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Steel
    3/8"-16
    		9/16"7/32"SAE Grade 2
    		ASTM A108100000000000000
     

    Thin-Heavy-Profile Nylon-Insert Locknuts

    Image of Product. Front orientation. Locknuts. Thin-Heavy-Profile Nylon-Insert Locknuts.
    About half the height of standard-profile locknuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. You can also use them as jam nuts by threading them against a hex nut to hold it in place. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.
    Low-Strength Steel
    Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Black-Corrosion-Resistant-Coated Steel—These nuts combine a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread
    Size
    Wd.
    Ht.
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    3/8"-16
    		11/16"13/32"25050000000000000000
     
    Black-Corrosion-Resistant-Coated Steel
    3/8"-16
    		11/16"13/32"25010000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    316 Stainless Steel—Our most corrosion-resistant nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.
    Thread
    Size
    Wd.
    Ht.
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    3/8"-16
    		11/16"13/32"25010000000000000000
     
    316 Stainless Steel
    3/8"-16
    		11/16"13/32"25010000000000000
     

    Low-Profile Knurled-Head Thumb Nuts

    Image of Product. Front orientation. Thumb Nuts. Low-Profile Knurled-Head Thumb Nuts.
    Image of Attribute. Front orientation. Contains Annotated. Low-Profile Knurled-Head Thumb Nuts.
    Twist these thumb nuts into spaces without a lot of clearance. They have a short, slip-resistant head, so you can grip them easily and make controlled adjustments in cramped spots. You can also use them as jam nuts by threading them against another nut to hold it in place.
    Steel
    Black-Oxide Steel—A dark, matte coating creates a finished look. These nuts offer minimal corrosion resistance, so they're best for dry environments.
    Collar
    Thread
    Size
    Dia.
    Ht.
    Head
    Dia.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Steel
    3/8"-16
    		1/2"1/16"3/4"5/16"100000000000000
     

    Thin-Profile Flex-Top Locknuts for Heavy Vibration

    Image of Product. Front orientation. Locknuts. Thin-Profile Flex-Top Locknuts for Heavy Vibration.
    About two-thirds the height of standard flex-top nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against a hex nut to hold it in place. The top section expands to grip the screw on all sides for a stronger hold than both nylon-insert and distorted-thread locknuts. As a result, they're suitable for use in equipment with constant, vigorous vibration, such as engines. These locknuts are reusable a handful of times, but the holding power decreases with each use.
    Steel
    These locknuts have equivalent strength to Grade 8 and Class 10 steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Cadmium-Plated Steel—These locknuts have good lubricity to thread on smoothly and ease installation. The plating also creates a barrier against rust that's comparable to zinc-yellow-chromate plating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Cadmium-Plated Steel
    3/8"-16
    		9/16"9/32"10000000000000000
     
    Steel
    3/8"-16
    		9/16"9/32"50000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    3/8"-16
    		9/16"9/32"100000000000000
     

    High-Torque Low-Profile Knurled-Head Thumb Nuts

    Image of Product. Front orientation. Thumb Nuts. High-Torque Low-Profile Knurled-Head Thumb Nuts.
    Twist the slip-resistant head by hand, then insert a T-handle hex key into one of the holes to apply extra torque for a tight fit. Nuts have a low-profile head that fits into cramped spaces. You can also use them as jam nuts by threading them against another nut to hold it in place.
    Steel
    Black-Oxide Steel—A dark, matte coating creates a finished look. These nuts offer minimal corrosion resistance, so they're best for dry environments.
    Thread
    Size
    Head
    Dia.
    Ht.
    No. of
    Holes
    Hole
    Dia.
    Each
    Black-Oxide Steel
    3/8"-16
    		1"3/8"43/16"00000000000000
     
    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.
    Thread
    Size
    Head
    Dia.
    Ht.
    No. of
    Holes
    Hole
    Dia.
    Each
    18-8 Stainless Steel
    3/8"-16
    		1"3/8"43/16"000000000000000
     

    Thin-Heavy-Profile Flex-Top Locknuts for Heavy Vibration

    Image of Product. Front orientation. Locknuts. Thin-Heavy-Profile Flex-Top Locknuts for Heavy Vibration.
    About two-thirds the height of standard flex-top nuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. Because of the thin profile, you can also use them as jam nuts by threading them against a hex nut to hold it in place. The top section expands to grip the screw on all sides for a stronger hold than both nylon-insert and distorted-thread locknuts. As a result, they're suitable for use in equipment with constant, vigorous vibration, such as engines. These locknuts are reusable a handful of times, but the holding power decreases with each use.
    Steel
    These locknuts have equivalent strength to Grade 8 and Class 10 steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Cadmium-Plated Steel—These locknuts have good lubricity to thread on smoothly and ease installation. The plating also creates a barrier against rust that's comparable to zinc-yellow-chromate plating.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Cadmium-Plated Steel
    3/8"-16
    		5/8"9/32"10000000000000000
     

    Flanged Knurled-Head Thumb Nuts

    Image of Attribute. Front orientation. Contains Annotated. Thumb Nuts. Flanged Knurled-Head Thumb Nuts.
    The slip-resistant head is easy to grip, while the flange distributes pressure evenly across the mounting surface without the need for a separate washer. These nuts are often used to secure screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts.
    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.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to the harsh chemicals that 316 stainless steel can.
    Passivated 18-8 Stainless Steel—With an added layer of protection, these nuts stand up to strong acids and other harsh chemicals.
    Highly Corrosion-Resistant 316 Stainless Steel—Our most corrosion-resistant thumb nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.
    Collar
    Thread
    Size
    Dia.
    Ht.
    Head
    Dia.
    Ht.
    Threading
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    3/8"-16
    		5/8"1/4"3/4"15/32"Fully Threaded100000000000000
     
    Black-Oxide 18-8 Stainless Steel
    3/8"-16
    		5/8"1/4"3/4"15/32"Fully Threaded10000000000000
     
    Passivated 18-8 Stainless Steel
    3/8"-16
    		5/8"1/4"3/4"15/32"Fully Threaded10000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    3/8"-16
    		5/8"1/4"3/4"15/32"Fully Threaded100000000000000
     
    Brass
    Brass—With a warm, polished look, these nuts are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments. It is also softer than other metals, so it's easier to thread together.
    Zinc-Plated Brass—The zinc plating offers better corrosion resistance than plain brass to stand up to solvents and mild chemicals.
    Collar
    Thread
    Size
    Dia.
    Ht.
    Head
    Dia.
    Ht.
    Threading
    Pkg.
    Qty.
    Pkg.
    Brass
    3/8"-16
    		5/8"1/4"3/4"15/32"Fully Threaded100000000000000
     
    Zinc-Plated Brass
    3/8"-16
    		5/8"1/4"3/4"15/32"Fully Threaded100000000000000
     

    Knurled-Head Thumb Nuts

    Image of Attribute. Front orientation. Contains Annotated. Thumb Nuts. Knurled-Head Thumb Nuts.
    Get a good grip on these nuts, even with oily fingers. They have a raised, slip-resistant head, so you can tighten them by hand and make controlled adjustments. Knurled-head nuts have a smaller profile than wing nuts, so they fit in tighter spots.
    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.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly Corrosion-Resistant 316 Stainless Steel—Our most corrosion-resistant thumb nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.
    Collar
    Thread
    Size
    Dia.
    Ht.
    Head
    Dia.
    Ht.
    Threading
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    3/8"-16
    		5/8"1/2"1"3/4"Fully Threaded1000000000000000
     
    Black-Oxide 18-8 Stainless Steel
    3/8"-16
    		5/8"1/2"1"3/4"Fully Threaded100000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    3/8"-16
    		5/8"1/2"1"3/4"Fully Threaded100000000000000
     

    Clevis End Fittings for Turnbuckles—Not for Lifting

    Image of Attribute. Side1 orientation. ZoomedIn view. Contains Annotated. Turnbuckles. Clevis End Fittings for Turnbuckles—Not for Lifting.
    Forged 316 Stainless Steel
    Image of Product. Bolt and Cotter Pin Closure. Front orientation. Bolt Closure. Clevis End Fittings for Turnbuckles—Not for Lifting.

    Bolt and Cotter

    Pin Closure

    Forged fittings are stronger than cast and wire drawn fittings.
    316 stainless steel fittings are the most corrosion resistant and have excellent resistance to chemicals and salt water.
    Clevis Pin
    Right-Hand
    Thread Direction
    Left-Hand
    Thread Direction
    Wt. Cap.,
    lb.
    Dia.
    Closure Method
    Clevis
    Inside Wd.
    Thread
    Size
    Thread
    Lg.
    Overall
    Lg.
    Each
    Each
    1,2005/16"Bolt, Cotter Pin9/16"3/8"-16
    		3 15/16"5 7/8"0000000000000000000000000000
     
    Cast 316 Stainless Steel
    Image of Product. Front orientation. Turnbuckles. Clevis End Fittings for Turnbuckles—Not for Lifting, Cotter Ring Closure.

    Cotter Ring

    Closure

    316 stainless steel fittings are the most corrosion resistant and have excellent resistance to chemicals and salt water.
    Clevis
    Pin
    Right-Hand
    Thread Direction
    Left-Hand
    Thread Direction
    Wt. Cap.,
    lb.
    Dia.
    Closure
    Method
    Clevis
    Inside Wd.
    Thread
    Size
    Thread
    Lg.
    Overall
    Lg.
    Each
    Each
    1,2003/8"Cotter Ring9/16"3/8"-16
    		3 7/8"5 3/8"000000000000000000000000000000
     

    Eye End Fittings for Turnbuckles—Not for Lifting

    Forged 316 Stainless Steel
    Image of Specification. Front orientation. Contains Annotated. Eye End Fittings for Turnbuckles—Not for Lifting, Oval Eye.

    Oval Eye

    Forged fittings are stronger than wire drawn fittings.
    316 stainless steel is the most corrosion resistant and has excellent resistance to chemicals and salt water.
    Oval Eye—Oval eyes provide more room to attach connectors.
    Right-Hand
    Thread Direction
    Left-Hand
    Thread Direction
    Wt. Cap.,
    lb.
    Eye
    Shape
    Eye
    ID
    Eye Inside
    Lg.
    Thread
    Size
    Thread
    Lg.
    Overall
    Lg.
    Each
    Each
    1,200Oval1/2"1 1/16"3/8"-16
    		4.02"6 1/8"0000000000000000000000000000
     
    Welded 316 Stainless Steel
    Image of Specification. Front orientation. Contains Annotated. Eye End Fittings for Turnbuckles—Not for Lifting, Round Eye.

    Round Eye

    316 stainless steel is the most corrosion resistant and has excellent resistance to chemicals and salt water.
    Right-Hand
    Thread Direction
    Left-Hand
    Thread Direction
    Wt. Cap.,
    lb.
    Eye
    Shape
    Eye
    ID
    Thread
    Size
    Thread
    Lg.
    Overall
    Lg.
    Each
    Each
    1,200Round5/8"3/8"-16
    		3 3/4"5 1/2"000000000000000000000000000000
     

    Hook End Fittings for Turnbuckles—Not for Lifting

    Forged 316 Stainless Steel
    Image of Attribute. Front orientation. Contains Annotated.
    Forged fittings are stronger than cast and wire drawn fittings.
    316 stainless steel fittings are the most corrosion resistant and have excellent resistance to chemicals and salt water.
    Right-Hand
    Thread Direction
    Left-Hand
    Thread Direction
    Wt. Cap.,
    lb.
    Hook Opening
    Wd.
    Thread
    Size
    Thread
    Lg.
    Overall
    Lg.
    Each
    Each
    7001/2"3/8"-16
    		3.71"5 7/16"00000000000000000000000000
     

    Unthreaded Stub End Fittings for Turnbuckles—Not for Lifting

    Image of Attribute. Front orientation. Contains Annotated. Turnbuckles. Unthreaded Stub End Fittings for Turnbuckles—Not for Lifting.
    Weld these stubs to parts or use them to push objects apart instead of pulling them together.
    316 Stainless Steel
    316 stainless steel fittings are the most corrosion resistant and have excellent resistance to chemicals and salt water.
    Stub
    Right-Hand
    Thread Direction
    Left-Hand
    Thread Direction
    Wt. Cap.,
    lb.
    Dia.
    Lg.
    Thread
    Size
    Thread
    Lg.
    Overall
    Lg.
    Each
    Each
    1,2005/16"2 1/2"3/8"-16
    		4"6 1/2"0000000000000000000000000000
     
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