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    83 Products

    Steel Hex Head Screws

    Image of Product. Front orientation. Hex Head Screws. Steel Hex Head Screws, Fully Threaded.
    Image of Product. Front orientation. Hex Head Screws. Steel Hex Head Screws, Partially Threaded.

    Fully Threaded

    Partially

    Threaded

    Our most popular hex head screws. These have a head with six flat sides to keep wrenches and sockets from slipping and rounding off the drive.
    Length is measured from under the head.
    High-Strength Fastener—Commonly used to fasten components in valves, pumps, motors, and other high-stress applications. These screws have a tensile strength of 125,000 to 160,000 psi.
    Zinc-Yellow-Chromate-Plated Steel—With slightly better corrosion resistance than zinc-plated steel screws, these stand up to more frequent exposure to moisture.
    Head
    Lg.
    Wd.
    Ht.
    Threading
    Thread
    Spacing
    Fastener Strength
    Grade/Class
    Tensile Strength,
    psi
    Pkg.
    Qty.
    Pkg.
    High-Strength Zinc-Yellow-Chromate-Plated Steel
     
    1 1/8"-12
    2 1/4"1 11/16"11/16"Fully ThreadedFine
    		SAE Grade 8
    		150,000192620A270000000
    3 1/4"1 11/16"11/16"Partially ThreadedFine
    		SAE Grade 8
    		150,000192620A27200000
    5"1 11/16"11/16"Partially ThreadedFine
    		SAE Grade 8
    		150,000192620A27300000
    9"1 11/16"11/16"Partially ThreadedFine
    		SAE Grade 8
    		150,000192620A27400000
     

    Key-Locking Threaded Insert Assortments with Installation Tools

    Image of Product. Front orientation. Threaded Inserts. Key-Locking Threaded Insert Assortments with Installation Tools.
    What you need to add or repair a range of thread sizes in soft metal, such as aluminum. These assortments include multiple key-locking inserts of each size and an installation tool. They're comparable to Keensert inserts.
    Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.
    Black Phosphate-Coated Steel—These inserts resist occasional moisture.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    No. of Inserts
    Included
    Includes
    Thread
    Spacing
    For Tap Thread Size
    Drill Bit Size
    For Max. Hole Dia.
    Each
    Standard Wall
     
    Black Phosphate-Coated Steel
    771/4"-20 Thread × 3/8" Installed Lg. (20 Each)
    5/16"-18 Thread × 0.438" Installed Lg. (15 Each)
    3/8"-16 Thread × 1/2" Installed Lg. (10 Each)
    7/16"-14 Thread × 5/8" Installed Lg. (10 Each)
    1/2"-13 Thread × 5/8" Installed Lg. (6 Each)
    5/8"-11 Thread × 7/8" Installed Lg. (3 Each)
    9/16"-12 Thread × 0.813" Installed Lg. (5 Each)
    3/4"-10 Thread × 1 1/8" Installed Lg. (3 Each)
    7/8"-9 Thread × 1 1/4" Installed Lg. (3 Each)
    1"-8 Thread × 1 3/8" Installed Lg. (2 Each)
    Installation Tool    		Coarse
    		7/16"-14
    1/2"-13
    9/16"-12
    5/8"-11
    3/4"-16
    7/8"-14
    1 1/8"-12
    1 1/4"-12
    1 3/8"-12
    		29/64"
    33/64"
    37/64"
    45/64"
    53/64"
    1 1/16"
    1 3/16"
    1 5/16"
    X
    		0.397"
    0.453"
    0.516"
    0.578"
    0.703"
    0.828"
    1.063"
    1.186"
    1.313"    		90284A2110000000
    771/4"-28 Thread × 3/8" Installed Lg. (20 Each)
    5/16"-24 Thread × 0.438" Installed Lg. (15 Each)
    3/8"-24 Thread × 1/2" Installed Lg. (10 Each)
    7/16"-20 Thread × 5/8" Installed Lg. (10 Each)
    1/2"-20 Thread × 5/8" Installed Lg. (6 Each)
    5/8"-18 Thread × 7/8" Installed Lg. (3 Each)
    3/4"-16 Thread × 1 1/8" Installed Lg. (3 Each)
    7/8"-14 Thread × 1 1/4" Installed Lg. (3 Each)
    1"-12 Thread × 1 3/8" Installed Lg. (2 Each)
    9/16"-18 Thread × 0.813" Installed Lg. (5 Each)
    Installation Tool    		Fine
    		7/16"-14
    1/2"-13
    9/16"-12
    5/8"-11
    3/4"-16
    7/8"-14
    1 1/8"-12
    1 1/4"-12
    1 3/8"-12
    		29/64"
    33/64"
    37/64"
    45/64"
    53/64"
    1 1/16"
    1 3/16"
    1 5/16"
    X
    		0.397"
    0.453"
    0.516"
    0.578"
    0.703"
    0.828"
    1.063"
    1.186"
    1.313"    		90284A215000000
     
    18-8 Stainless Steel
    771/4"-20 Thread × 3/8" Installed Lg. (20 Each)
    5/16"-18 Thread × 0.438" Installed Lg. (15 Each)
    3/8"-16 Thread × 1/2" Installed Lg. (10 Each)
    7/16"-14 Thread × 5/8" Installed Lg. (10 Each)
    1/2"-13 Thread × 5/8" Installed Lg. (6 Each)
    5/8"-11 Thread × 7/8" Installed Lg. (3 Each)
    9/16"-12 Thread × 0.813" Installed Lg. (5 Each)
    3/4"-10 Thread × 1 1/8" Installed Lg. (3 Each)
    7/8"-9 Thread × 1 1/4" Installed Lg. (3 Each)
    1"-8 Thread × 1 3/8" Installed Lg. (2 Each)
    Installation Tool    		Coarse
    		7/16"-14
    1/2"-13
    9/16"-12
    5/8"-11
    3/4"-16
    7/8"-14
    1 1/8"-12
    1 1/4"-12
    1 3/8"-12
    		29/64"
    33/64"
    37/64"
    45/64"
    53/64"
    1 1/16"
    1 3/16"
    1 5/16"
    X
    		0.397"
    0.453"
    0.516"
    0.578"
    0.703"
    0.828"
    1.063"
    1.186"
    1.313"    		90284A411000000
    771/4"-28 Thread × 3/8" Installed Lg. (20 Each)
    5/16"-24 Thread × 0.438" Installed Lg. (15 Each)
    3/8"-24 Thread × 1/2" Installed Lg. (10 Each)
    7/16"-20 Thread × 5/8" Installed Lg. (10 Each)
    1/2"-20 Thread × 5/8" Installed Lg. (6 Each)
    5/8"-18 Thread × 7/8" Installed Lg. (3 Each)
    3/4"-16 Thread × 1 1/8" Installed Lg. (3 Each)
    7/8"-14 Thread × 1 1/4" Installed Lg. (3 Each)
    1"-12 Thread × 1 3/8" Installed Lg. (2 Each)
    9/16"-18 Thread × 0.813" Installed Lg. (5 Each)
    Installation Tool    		Fine
    		7/16"-14
    1/2"-13
    9/16"-12
    5/8"-11
    3/4"-16
    7/8"-14
    1 1/8"-12
    1 1/4"-12
    1 3/8"-12
    		29/64"
    33/64"
    37/64"
    45/64"
    53/64"
    1 1/16"
    1 3/16"
    1 5/16"
    X
    		0.397"
    0.453"
    0.516"
    0.578"
    0.703"
    0.828"
    1.063"
    1.186"
    1.313"    		90284A415000000
     

    Heavy-Profile Hex Nuts

    About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.
    Extreme-Strength Steel
    Image of Product. Front orientation. Hex Nuts. 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.
    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.
    Steel
    1 1/8"-12
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A26700000
     

    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.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Steel
    1 1/8"-12
    		1 5/8"41/64"194830A141000000
     

    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
    1 1/8"-12
    		1 11/16"39/64"SAE Grade 5
    		ASME B18.2.2194846A55800000
     
    Steel
    1 1/8"-12
    		1 11/16"39/64"SAE Grade 5
    		ASME B18.2.2194846A2230000
     
    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.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Yellow-Chromate-Plated Steel
    1 1/8"-12
    		1 11/16"39/64"SAE Grade 8
    		ASME B18.2.2193839A85800000
     
    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.
    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
    1 1/8"-12
    		1 11/16"39/64"SAE Grade 2
    		591078A258000000
     
    Steel
    1 1/8"-12
    		1 11/16"39/64"SAE Grade 2
    		1090494A23900000
     
    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
    1 1/8"-12
    		1 11/16"39/64"191847A43900000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    1 1/8"-12
    		1 11/16"39/64"194805A26500000
     
    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
    1 1/8"-12
    		1 11/16"39/64"192174A680000000
     

    Hex Nuts

    The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.
    Medium-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Image of Specification. Front orientation. Hex Nuts. 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.
    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
    Specs. Met
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.2Material Certificate
    		1095462A558000000
     
    Black-Oxide Steel
    1 1/8"-12
    		1 11/16"1"SAE Grade 5
    		ASME B18.2.2—1095479A18400000
     
    Steel
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.2—595505A62600000
     
    High-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Image of Specification. Front orientation. Hex Nuts. 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.
    Material Certificate—Nuts include a report with a traceable lot number and a description of their chemical and physical properties.
    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.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    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.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    Zinc-Yellow-Chromate-Plated Steel
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		Material Certificate
    		594895A858000000
     
    Black-Oxide Steel
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		—594895A58400000
     
    Steel
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		—590499A85800000
     
    Zinc-Flake-Coated Steel
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		—193827A2840000
     
    Low-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Image of Specification. Front orientation. Hex Nuts. 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.
    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
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.2590473A258000000
     
    Steel
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.21090490A25800000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Image of Specification. Front orientation. Hex Nuts. 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
    1 1/8"-12
    		1 11/16"31/32"191845A21500000
     

    Nylon-Insert Locknuts

    Image of Product. Front orientation. Locknuts. Nylon-Insert Locknuts.
    Versatile yet economical, these are the most commonly used locknuts. 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.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Zinc-Yellow-Chromate-Plated Steel
    1 1/8"-12
    		1 5/8"1 11/64"SAE Grade 8
    		185197135A112000000
     
    Black-Oxide Steel
    1 1/8"-12
    		1 5/8"1 11/64"SAE Grade 8
    		185197135A43700000
     
    Steel
    1 1/8"-12
    		1 5/8"1 11/64"SAE Grade 8
    		185190630A20400000
     

    Finish-Your-Own Key-Locking Threaded Inserts for Soft Metal

    Image of Product. Bottom orientation. Threaded Inserts. Finish-Your-Own Key-Locking Threaded Inserts for Soft Metal.
    Image of Specification. Side1 orientation. Contains Annotated. Threaded Inserts. Finish-Your-Own Key-Locking Threaded Inserts for Soft Metal.
    Tap the thread size you need into the solid body of these inserts. They’re a great choice when you need a custom combination of internal thread size and external diameter. Use them to repair or add new threads in soft metal, such as aluminum. They can also plug threaded holes without the hassle of welding. Keys on the inserts drive into material to prevent slipping and rotating in the hole.
    To install, drill and tap a hole in your material. Then, thread the insert onto the installation tool and screw it into the hole. Place the tool over the keys and hit it with a hammer to drive them in.
    Black Phosphate-Coated Steel—These inserts resist occasional moisture.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Inserts
    Installation
    Tools
    For Tap Thread
    Size
    Installed
    Lg.
    Max. Tapping
    Dia.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Locking
    Keys
    Each
    Each
    Standard Profile
     
    Black Phosphate-Coated Steel
    1 1/8"-12
    		1.125"3/4"1 1/16"
    		1.063"493774A21000000093741A2100000000
     
    18-8 Stainless Steel
    1 1/8"-12
    		1.125"3/4"1 1/16"
    		1.063"493543A16000000093741A210000000
     

    Steel Socket Head Screws

    Image of Product. Front orientation. Socket Head Screws. Steel Socket Head Screws, Fully Threaded.

    Fully Threaded

    Image of Product. Front orientation. Socket Head Screws. Steel Socket Head Screws, Partially Threaded.

    Partially Threaded

    Made of alloy steel, these screws are the standard for high-strength fastening. Use them in high-load applications such as dies, presses, and heavy equipment. The deep, six-point socket keeps the hex key from slipping out and damaging the drive.
    Length is measured from under the head.
    Black-Oxide Alloy Steel—Best for dry environments since moisture will cause these screws to rust. They have a dark, matte appearance.
    Head
    Lg.
    Dia.
    Ht.
    Threading
    Thread
    Spacing
    Tensile Strength,
    psi
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Alloy Steel
     
    1 1/8"-12
    3"1.688"1 1/8"Fully ThreadedFine
    		170,000190044A274000000
    4"1.688"1 1/8"Partially ThreadedFine
    		170,000190044A27500000
    5"1.688"1 1/8"Partially ThreadedFine
    		170,000190044A27600000
     

    Key-Locking Threaded Inserts with Installation Tools

    Image of Product. Front orientation. Threaded Inserts. Key-Locking Threaded Inserts with Installation Tools.
    Paired with the right tool for installation, these inserts create strong threads in soft metal, such as aluminum. They have keys that drive into material to prevent inserts from slipping and rotating in the hole.
    Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.
    Black Phosphate-Coated Steel—These inserts resist occasional moisture.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Locking
    Keys
    No. of Inserts
    Included
    Each
    Standard Wall
     
    Black Phosphate-Coated Steel
    3/4"-10
    		1 1/8"-12
    		1.125"1 1/16"
    		1.063"4390245A019000000
    3/4"-16
    		1 1/8"-12
    		1.125"1 1/16"
    		1.063"4390245A05900000
     
    18-8 Stainless Steel
    3/4"-10
    		1 1/8"-12
    		1.125"1 1/16"
    		1.063"4391731A023000000
    3/4"-16
    		1 1/8"-12
    		1.125"1 1/16"
    		1.063"4391731A035000000
     

    Mil.-Spec. Key-Locking Threaded Inserts For Soft Metal

    Image of Product. Bottom orientation. Threaded Inserts. Mil.-Spec. Key-Locking Threaded Inserts For Soft Metal.
    These inserts are manufactured and tested to meet or compare to strict standards adopted by the U.S. military. The keys drive into aluminum and other soft metal for a secure hold that won't slip or rotate, even in vibrating vehicle or aerospace parts. These inserts are comparable to Keensert inserts.
    To install, drill and tap a hole in your material. Then, thread the insert onto the installation tool and screw it into the hole. Place the tool over the keys and hit it with a hammer to drive them in.
    Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.
    High-Strength Cadmium-Plated Alloy Steel—These inserts have the strength to stand up to high-pressure applications and a plating that helps screws thread in smoothly.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Inserts
    Installation
    Tools
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Locking
    Keys
    Specs. Met
    Each
    Each
    Standard Wall
     
    High-Strength Cadmium-Plated Alloy Steel
    3/4"-10
    		1 1/8"-12
    		1.125"1 1/16"
    		1.062"4MS51831A10995101A13600000093904A7480000000
    3/4"-16
    		1 1/8"-12
    		1.125"1 1/16"
    		1.062"4MS51831A20995101A13700000———0
     
    18-8 Stainless Steel
    3/4"-10
    		1 1/8"-12
    		1.125"1 1/16"
    		1.067"4MS51831-10993904A2440000093904A748000000
    3/4"-16
    		1 1/8"-12
    		1.125"1 1/16"
    		1.067"4MS51831-20993904A24500000———0
     

    Easy-Start Helical Threaded Insert Installation Tools

    These tools compress the diameter of your insert so it fits easily into a tapped hole. They’re the best choice for preventing misaligned or damaged threads—just make sure you have space to turn the crank. Screw or slide an insert onto your tool and drive it between a quarter-turn and half-turn below the surface. Also known as prewinders.
    Threaded Insert Installation Tools with Depth Stop
    Image of Product. Front orientation. Threaded Insert Installation Tools. Easy-Start Helical Threaded Insert Installation Tools, Threaded Insert Installation Tools with Depth Stop, T-Handle.
    Image of Specification. Threaded Drive. Front orientation. ZoomedIn view. Threaded Drive Helical Insert Tool. Easy-Start Helical Threaded Insert Installation Tools, Threaded Insert Installation Tools with Depth Stop.

    T-Handle

    Threaded Drive

    Ensure consistent installation across multiple inserts. Set your desired installation depth, and the stop will prevent you from driving your insert any further.
    Threaded Drive Helical Insert Tool—These tools align each coil of your insert perfectly with the thread pitch of your tapped hole for easy installation.
    For Thread
    Size
    Mfr.
    Handle
    Style
    Helical Insert
    Tool Drive Type
    For Use With
    Each
    Standard (UN) Thread
    1 1/8"-12
    		Heli-CoilT-HandleThreadedHelical Inserts, Screw-Locking Helical Inserts90261A1790000000
     

    Key-Locking Threaded Insert Installation Tools

    Image of Product. Front orientation. Threaded Insert Installation Tools. Key-Locking Threaded Insert Installation Tools, Style A.
    Image of Product. Front orientation. Threaded Insert Installation Tools. Key-Locking Threaded Insert Installation Tools, Style C.

    Style A

    Style C

    Thread inserts and drive down their keys with a single tool. These tools are compatible with Keensert inserts.
    Threaded Insert Installation Tools
    Image of Product. Front orientation. Threaded Insert Installation Tools. Key-Locking Threaded Insert Installation Tools, Style A.

    Style A

    For Thread Size
    For Tap Thread
    Size
    Style
    Features
    Each
    For Thick-Wall Inserts
    3/4"-10, 3/4"-161 1/8"-12
    		ASlotted End6721N42000000
    1 1/8"-7, 1 1/8"-121 1/2"-12
    		ASlotted End6721N4500000
     
    Threaded Insert Installation Tools with Spring
    Image of Product. Front orientation. Threaded Insert Installation Tools. Key-Locking Threaded Insert Installation Tools, Style C.

    Style C

    The tradespersons’ choice for installing Mil. Spec. inserts. A spring holds the sleeve under tension, so wobbles and jostles don’t interfere with a clean, professional install.
    For Thread Size
    For Tap Thread
    Size
    Style
    Features
    Each
    For Thick-Wall Inserts
    3/4"-10, 3/4"-161 1/8"-12
    		CSlotted End, Sleeve93904A7480000000
     

    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
    1 1/8"-12
    		1 11/16"39/64"SAE Grade 5
    		199612A19700000
     

    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.
    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.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Insert Max.
    Temp., ° F
    Each
    Steel
    1 1/8"-12
    		1 7/8"1"ASTM Grade C
    		25093126A180000000
     

    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-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    1 1/8"-12
    		1 53/64"41/64"SAE Grade 8
    		220194945A251000000
     

    Threaded Rods

    Anchor, connect, or hang components in a wide variety of applications, from mounting I-beams to suspending light fixtures.
    Medium-Strength Steel
    Image of Product. Front orientation. Threaded Rods. Threaded Rods.
    With tensile strengths from 110,000 psi to 125,000 psi, these rods are strong enough for most industrial applications, such as anchoring machinery and connecting pipe flanges. They are about twice as strong as low-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also medium-strength steel.
    Steel—Best for dry environments since moisture will cause these rods to rust.
    Lg.,
    ft.
    Tensile Strength,
    psi
    Fastener Strength
    Grade/Class
    Hardness
    Specs.
    Met
    Each
    Steel
     
    1 1/8"-12
    1125,000ASTM Grade B7
    		Rockwell C35ASTM A193
    		98957A413000000
    2125,000ASTM Grade B7
    		Rockwell C35ASTM A193
    		98957A82000000
    3125,000ASTM Grade B7
    		Rockwell C35ASTM A193
    		92580A11500000
    6125,000ASTM Grade B7
    		Rockwell C35ASTM A193
    		92580A215000000
     
    High-Strength Steel
    Image of Product. Front orientation. Threaded Rods. Threaded Rods.
    With a tensile strength of 150,000 psi, these rods are strong enough to stabilize steel frameworks and structural supports, such as I-beams. They are about 25% stronger than medium-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also high-strength steel.
    Zinc-Yellow-Chromate-Plated Steel—The most common choice for areas with occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these rods to rust.
    Lg.,
    ft.
    Tensile Strength,
    psi
    Fastener Strength
    Grade/Class
    Hardness
    Specs. Met
    Each
    Zinc-Yellow-Chromate-Plated Steel
     
    1 1/8"-12
    3150,000ASTM Grade BD
    		Rockwell C33ASTM A354 Grade BD3313N1090000000
    6150,000ASTM Grade BD
    		Rockwell C33ASTM A354 Grade BD3313N173000000
     
    Steel
     
    1 1/8"-12
    1150,000ASTM Grade BD
    		Rockwell C33ASTM A354 Grade BD90322A37200000
    3150,000ASTM Grade BD
    		Rockwell C33ASTM A354 Grade BD90322A233000000
    6150,000ASTM Grade BD
    		Rockwell C33ASTM A354 Grade BD90322A234000000
     
    Low-Strength Steel
    Image of Product. Front orientation. Threaded Rods. Threaded Rods.
    With a tensile strength of 50,000 psi or 60,000 psi, these rods are often used to suspend light fixtures, cable trays, and conduit from ceilings. They're about half the strength of medium-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also low-strength steel.
    Steel—Best for dry environments since moisture will cause these rods to rust.
    Lg.,
    ft.
    Tensile Strength,
    psi
    Hardness
    Pkg.
    Qty.
    Pkg.
    Steel
     
    1 1/8"-12
    150,000Rockwell B61198790A430000000
    250,000Rockwell B61198791A03900000
    350,000Rockwell B61198838A03900000
    650,000Rockwell B61198911A03900000
     

    Threaded Taper Pins

    Image of ProductInUse. Tighten the nut to draw the pin out of the hole.. Front orientation. Contains Annotated. Taper Pins. Threaded Taper Pins.

    Tighten the

    nut to draw

    the pin out of

    the hole.

    Threads on these pins stick out for easy removal from blind holes. Tighten the hex nut to draw the pin out. Often used for positioning components and securing assemblies, they taper at a uniform rate to fit in tapered holes. For a snug fit, use a tapered drill bit that matches the pin number for inch sizes or the small end diameter for metric sizes. They have slightly rounded edges to aid insertion.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Inch
    Image of Product. Front orientation. Contains Annotated. Taper Pins. Threaded Taper Pins, Inch.
    Length for inch pins measures the unthreaded length of the pin.
    12L14 Carbon Steel—12L14 Carbon steel pins have good strength.
    ASME B18.8.2—Pins that meet ASME B18.8.2 specifications conform to ASME standards for material and dimensions.
    Breaking Strength—Breaking strength is measured as single shear, which is the force required to break the pin into two pieces.
    Lg.
    Small End
    Dia.
    Rate of
    Taper
    Thread
    Lg.
    Thread
    Size
    Min.
    Hardness
    Breaking
    Strength
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    12L14 Carbon Steel
     
    14 Taper Pin—1.521" Large End Diameter
    10"1.313"1:481 7/16"1 1/8"-12
    		Not RatedNot RatedASME B18.8.2192281A1120000000
     

    Top-Lock Distorted-Thread Locknuts

    Image of Product. Front orientation. Locknuts. Top-Lock Distorted-Thread Locknuts.
    Irregularly shaped threads at the top of these locknuts grip the screw for a stronger hold than nylon-insert locknuts. Although the threads prevent the nut from backing out due to vibration, they also increase the effort to install and remove. To get these nuts off, you may need special tools, such as an impact wrench or propane torch. Nuts are not reusable.
    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-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
    1 1/8"-12
    		1 11/16"1"ASTM Grade C
    		192501A54200000
     

    Helical Threaded Insert Installation and Prong Break-Off Tools

    Image of Product. Front orientation. Threaded Insert Installation Tools. Helical Threaded Insert Installation and Prong Break-Off Tools, T-Handle.

    T-Handle

    Install helical inserts and break off prongs with one tool and a hammer strike. These tools have a slot that grips your insert’s prong for turning both left- and right-hand threads. Slide an insert onto these tools and drive them a quarter-turn to half-turn below the material’s surface. Then, strike the end of the tool with a hammer to break off the prong. These tools work with pronged helical inserts.
    For Thread Size
    Handle
    Style
    Each
    1 1/8"-12, 1 1/4"-7, 1 1/4"-8, M30 × 3.5 mm, M30 × 3 mm, M30 × 2 mm, M30 × 1.5 mmT-Handle92450A192000000
     

    Helical Threaded Inserts with Installation Tools

    Image of Product. Drill Bit, Installation Tool and Through-Hole Tap. Front orientation. Threaded Inserts. Helical Threaded Inserts with Installation Tools, Pronged, Drill Bit, Through-Hole Tap, Installation Tool.

    Drill Bit, Installation Tool

    and Through-Hole Tap

    Quickly restore stripped threads—these inserts come with through-hole taps and installation tools. The tough coils on these inserts expand once installed to anchor in a tapped hole.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Inserts
    Included
    Includes
    Each
    Pronged
     
    18-8 Stainless Steel
    1 1/8"-12
    		1.688"1 5/32"
    		1.156"5Drill Bit
    Installation Tool
    Through-Hole Tap    		91732A1250000000
     

    Key-Locking Threaded Insert Blank Drivers

    Image of Product. Front orientation. Threaded Insert Installation Tools. Key-Locking Threaded Insert Blank Drivers.
    Hand thread an insert blank into a tapped hole before placing the tip of these tools on the insert. Strike the tool with a hammer to drive the keys into your material.
    For Tap Thread
    Size
    Handle
    Style
    Each
    Standard (UN) Thread
    1 1/8"-12
    		Straight93741A2100000000
     

    Key-Locking Threaded Insert Drivers

    Image of Product. Front orientation. Threaded Insert Installation Tools. Key-Locking Threaded Insert Drivers.
    Place the tip of these tools into a key-locking insert after you've threaded it into a hole with your fingers. Then, strike these tools with a hammer to drive the keys into the material and secure the insert. They’re compatible with Keensert inserts.
    Choose the tool that matches your insert’s thread size and tap thread size.
    For Thread Size
    For Tap Thread
    Size
    Handle
    Style
    Each
    Standard (UN) Thread
     
    For Thick-Wall Inserts
    3/4"-10, 3/4"-161 1/8"-12
    		Straight92100A735000000
    1 1/8"-7, 1 1/8"-121 1/2"-12
    		Straight92100A749000000
     

    Screw-Locking Seize-Resistant Key-Locking Threaded Inserts for Soft Metal

    Image of Product. Bottom orientation. Threaded Inserts. Screw-Locking Seize-Resistant Key-Locking Threaded Inserts for Soft Metal.
    Create the tightest hold in aluminum and other soft metal without screws sticking. The lubricant on these inserts eases installation, and the irregularly shaped threads won’t let screws back out from vibration. Inserts have keys that drive into material to prevent them from slipping or rotating in the hole.
    To install, drill and tap a hole in your material. Then, thread the insert onto the installation tool and screw it into the hole. Place the tool over the keys and hit it with a hammer to drive them in.
    Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.
    Dry-Film-Lubricated Cadmium-Plated Steel—The plating creates a barrier against rust.
    Dry-Film-Lubricated 18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Inserts
    Installation
    Tools
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Locking
    Keys
    Specs. Met
    Each
    Each
    Standard Wall
     
    Dry-Film-Lubricated Cadmium-Plated Steel
    3/4"-10
    		1 1/8"-12
    		1.250"1 1/16"
    		1.063"4MS51831A109L97255A26300000093904A7480000000
     
    Dry-Film-Lubricated 18-8 Stainless Steel
    3/4"-10
    		1 1/8"-12
    		1.250"1 1/16"
    		1.063"4MS51831-109L97255A1480000093904A748000000
     

    Helical Threaded Inserts

    Image of Product. Pronged. Bottom orientation. Threaded Inserts. Helical Threaded Inserts, Pronged.

    Pronged

    Restore, reinforce, or create threads in metal. The tough coils on these inserts expand once installed to anchor in a tapped hole. Also known as Heli-Coil inserts, they're often used in engine heads and machinery housings where strong connections are critical. Unlike threadlocking inserts, you can remove and reuse them without them losing their strength.
    Installation requires a drill bit, a helical insert tap, and an installation tool.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Inserts
    Through-Hole
    Taps
    Closed-End
    Hole Taps
    Inserts with
    Installation Tools
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    No. of Inserts
    Included
    Each
    Pronged
     
    18-8 Stainless Steel
    1 1/8"-12
    		1.125"1 5/32"
    		1.156"MS124666191732A0310000091709A075000000091709A5030000000————0
    1 1/8"-12
    		1.688"1 5/32"
    		1.156"MS124706191732A0340000091709A07500000091709A503000000591732A1250000000
     
    Extraction Tools
    Remove installed helical inserts.
    For Pronged Helical Inserts—Place the tip into pronged inserts and lightly strike the tool’s head. Then, turn the tool counterclockwise with pressure to extract the insert.
    For Thread Size
    Each
    For Pronged Helical Inserts
    1 1/8"-7, 1 1/8"-12, 1 1/4"-7, 1 1/4"-8, 1 1/4"-12, 1 3/8"-6, 1 3/8"-12, 1 1/2"-6, 1 1/2"-8, 1 1/2"-12, M27, M30, M36, M39
    		90254A3600000000
     

    Key-Locking Threaded Inserts for Soft Metal

    Image of Product. Bottom orientation. Threaded Inserts. Key-Locking Threaded Inserts for Soft Metal.
    Add strong threads in soft metal, such as aluminum. The keys on these inserts drive into holes to hold more securely than thread-locking or helical inserts. They prevent slipping and rotating, so they’re stable enough for use in vehicle or aerospace parts that experience heavy vibration. These inserts are comparable to Keensert inserts.
    To install, drill and tap a hole in your material. Then, thread the insert onto the installation tool and screw it into the hole. Place the tool over the keys and hit it with a hammer to drive them in.
    Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.
    Black Phosphate-Coated Steel—These inserts resist occasional moisture.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Inserts
    Installation
    Tools
    Inserts with
    Installation Tools
    Each
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Locking
    Keys
    1-9
    10-Up
    Each
    No. of Inserts
    Included
    Each
    Standard Wall
     
    Black Phosphate-Coated Steel
    3/4"-10
    		1 1/8"-12
    		1.125"1 1/16"
    		1.063"490245A03900000000000092100A735000000390245A019000000
    3/4"-16
    		1 1/8"-12
    		1.125"1 1/16"
    		1.063"490245A079000000000092100A73500000390245A05900000
    1 1/8"-12
    		1 1/2"-12
    		1.438"1 7/16"
    		1.438"490245A096000000000092100A749000000————0
     
    18-8 Stainless Steel
    3/4"-10
    		1 1/8"-12
    		1.125"1 1/16"
    		1.063"491731A063000000000092100A73500000391731A023000000
    3/4"-16
    		1 1/8"-12
    		1.125"1 1/16"
    		1.063"491731A069000000000092100A73500000391731A035000000
     
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