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    22 Products
    About Threaded Inserts
    industrial info icon

    Choose the right threaded insert for your application and learn how to install it securely.

    Split-Preventing Tee-Nut Threaded Inserts for Hardwood

    Image of Product. Pronged Secured. Bottom orientation. Threaded Inserts. Split-Preventing Tee-Nut Threaded Inserts for Hardwood, Pronged Secured.

    Pronged Secured

    Prongs or barbs create a secure fit that won't split hardwood. To install these inserts, hammer them into a drilled hole. The installed length includes the flange.
    Pronged Secured—With just three short prongs, these inserts are less likely to damage dense wood than other tee nut inserts.
    Zinc-Plated Steel—A step up from plain steel, the plating withstands occasional exposure to moisture.
    Barrel
    Flange
    Thread
    Size
    Installed
    Lg.
    Dia.
    Lg.
    Dia.
    Thick.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Pkg.
    Qty.
    Pkg.
    Pronged Secured
     
    Zinc-Plated Steel
    4-40
    0.149"0.13"1/8"23/64"0.024"9/64"
    0.141"10090975A002000000
     

    Rectangular Weld Nuts

    Image of Product. Bottom orientation. Weld Nuts. Rectangular Weld Nuts.
    Image of Product. Bottom orientation. Weld Nuts. Rectangular Weld Nuts.
    These nuts add permanent threads in narrow spaces such as channels. With a slim footprint, they fit where round weld nuts can’t. Plus, their barrel is twice as long as low-profile barrels, so more threads connect with your bolt for a secure hold. You can weld these nuts in two orientations: on top of a flat surface or with the barrel sticking through a hole.
    18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.
    Number of Projections—Weld these nuts on top of metal—the projections on the bottom will fuse to the surface. More projections lead to more consistent welds by concentrating heat and protecting the threads from deforming.
    Base
    Barrel
    Thread
    Size
    No. of
    Projections
    Lg.
    Wd.
    Thk.
    Dia.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    4-40
    09/16"9/32"1/32"9/64"1/8"2590572A102000000
     

    Long-Barrel Round Weld Nuts

    Image of Product. Bottom orientation. Weld Nuts. Long-Barrel Round Weld Nuts.
    Image of Product. Bottom orientation. Weld Nuts. Long-Barrel Round Weld Nuts.
    With an extended barrel and a round flange, these nuts distribute force evenly to prevent pull-through. The barrel is twice as long as standard round weld nuts, so more threads connect with your bolt for a great grip. You can weld these nuts in two orientations: on top of a flat surface or with the barrel sticking through the hole.
    Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.
    Zinc-Plated Steel—A step up from plain steel, these nuts withstand occasional exposure to moisture. Weld them to uncoated steel surfaces. If MIG or TIG welding, grind the zinc plating off the part of the nut you intend to weld.
    18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.
    Number of Projections—Weld these nuts on top of metal—the projections on the bottom will fuse to the surface. More projections lead to more consistent welds by concentrating heat and protecting the threads from deforming.
    Base
    Barrel
    Thread
    Size
    No. of
    Projections
    Dia.
    Thk.
    Dia.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Steel
    4-40
    03/8"1/32"9/64"1/8"10090596A005000000
     
    Zinc-Plated Steel
    4-40
    03/8"1/32"9/64"1/8"10090596A11100000
     
    18-8 Stainless Steel
    4-40
    03/8"1/32"1/8"1/8"2590860A10100000
     

    Stainless Steel Adhesive-Ready Nuts

    Image of Product. Front orientation. Adhesive-Mount Nuts. Stainless Steel Adhesive-Ready Nuts.
    Add strong threads to material that’s too difficult to drill or too thin to grip a threaded insert. These nuts are ideal for brittle plastics or tough composites, such as acrylic or carbon fiber. They have large holes in the base so that adhesive or resin can flow through, spread out, and create an extra-strong hold. You can also mold them into the surface of your material. Made of 316 stainless steel, they resist corrosion from salt water and harsh chemicals.
    The base of these nuts acts like a flange, distributing pressure evenly across the mounting surface. The larger the base, the more that pressure is spread out; the smaller the base, the tighter the space these nuts can fit into. Taller nuts engage more of a screw’s threads than shorter nuts. Shorter nuts fit in low-clearance areas.
    Base
    Nut
    Thread
    Size
    Dia.
    Thk.
    Wd.
    Ht.
    Hole Dia.
    Pkg.
    Qty.
    Pkg.
    316 Stainless Steel
    4-40
    29/32"3/64"3/16"1/2"13/64"198007A45900000
    4-40
    29/32"3/64"1/4"3/32"13/64"1098007A45000000
    4-40
    1 1/2"3/64"3/16"1/2"11/64", 13/64"198007A4610000
    4-40
    1 1/2"3/64"1/4"3/32"11/64", 13/64"598007A4510000
     

    Mil. Spec. Rivet-Mount Nuts

    Image of ProductInUse. Front orientation. Contains Annotated. Rivet-Mount Nuts.
    Image of Product. Front orientation. Rivet-Mount Nuts.
    Image of Attribute. Front orientation. Contains Annotated.
    Image of Attribute. Top orientation. Contains Annotated.
    Create threads in hard-to-work areas—where you can’t reach the back of a workpiece, or material is too thin to be tapped. For a strong grip, these rivet-mount nuts have distorted threads that increase friction with bolts. Because they mount with two rivets, they won’t spin when you’re tightening screws. However, these nuts do move inside their retainers, which lets you install bolts at a slight angle; use them to align with off-center parts. All meet military guidelines for dimensions and material.
    A286 Stainless Steel—A286 stainless steel nuts are corrosion resistant.
    Cadmium-Plated Carbon Steel and Cadmium-Plated Steel—Cadmium-plated nuts resist corrosion in industrial and saltwater environments, although will lose their corrosion resistance over 450° F. The cadmium plating also adds lubricity, making these nuts easy to install.
    Silver-Plated A286 Stainless Steel—Silver-plated stainless steel nuts withstand temperatures up to 800° F. The silver plating also adds lubricity and prevents seizing caused by friction between nuts and bolts.
    Lubricated—Lubricated nuts thread onto bolts smoothly.
    Base
    Barrel
    Mounting
    Thread
    Size
    Lg.
    Wd.
    Thk.
    Dia.
    Ht.
    No. of
    Holes
    Hole
    Dia.
    Hole
    Ctr.-to-Ctr.
    Mil. Spec.
    Each
    Steel—Unlubricated
    4-40
    21/32"5/16"3/32"1/8"1/16"20.098"13/32"MS21075-04N90857A12600000
     
    Cadmium-Plated Steel—Lubricated
    4-40
    21/32"5/16"3/32"1/8"1/16"20.098"13/32"MS21075L04N90857A1310000
     
    Cadmium-Plated Carbon Steel—Lubricated
    4-40
    61/64"13/32"1/32"0.141"9/64"20.098"11/16"MS21059L0490857A1060000
     
    A286 Stainless Steel—Lubricated
    4-40
    21/32"5/16"3/32"1/8"1/16"20.098"13/32"MS21076L04N90857A14100000
     
    Silver-Plated A286 Stainless Steel—Unlubricated
    4-40
    21/32"5/16"3/32"1/8"1/16"20.098"13/32"MS21076-04N90857A13600000
     

    Stainless Steel Closed-End Adhesive-Ready Nuts

    Image of Product. Top View. Bottom orientation. Adhesive-Mount Nuts. Stainless Steel Closed-End Adhesive-Ready Nuts.

    Top View

    Image of Product. Bottom View. Bottom orientation. Adhesive-Mount Nuts. Stainless Steel Closed-End Adhesive-Ready Nuts.

    Bottom View

    Adhere or mold these nuts onto a surface without gunking up the threads—the closed end blocks out adhesive, resin, and debris. It also acts as a stop, preventing screws from penetrating your material. Use them to add strong threads to material that’s too difficult and brittle to drill, such as acrylic and carbon fiber. They’re also often used when the surface is too thin to grip a threaded insert. To create a secure bond, large holes in the base let adhesive and resin flow and spread along the joint. Made of 316 stainless steel, these nuts resist corrosion from salt water and harsh chemicals.
    The base of these nuts acts like a flange, distributing pressure evenly across the mounting surface. The larger the base, the more that pressure is spread out; the smaller the base, the tighter the space these nuts can fit into. Taller nuts engage more of a screw’s threads than shorter nuts. Shorter nuts fit in low-clearance areas.
    Base
    Nut
    Thread
    Size
    Dia.
    Thk.
    Wd.
    Ht.
    Hole
    Dia.
    Pkg.
    Qty.
    Pkg.
    316 Stainless Steel
    4-40
    29/32"3/64"13/64"1/2"13/64"193553A29000000
    4-40
    29/32"3/64"1/4"3/32"13/64"1093553A11000000
     

    Stainless Steel Narrow-Base Adhesive-Ready Nuts

    Image of Product. Bottom orientation. Adhesive-Mount Nuts. Stainless Steel Narrow-Base Adhesive-Ready Nuts.
    Add corrosion-resistant threads to channels, corners, and other tight spaces without drilling a hole. Glue these nuts on to thin surfaces and materials too hard and brittle to drill, such as acrylic and carbon fiber. Large holes in the base allow adhesive and resin to flow and spread along the joint for a good bond. You can mold them into plastics or composites. Made of 316 stainless steel, these nuts are excellent at resisting chemicals and salt water.
    The base of these nuts acts like a flange, distributing pressure evenly across the mounting surface. Larger bases spread the pressure over more surface for a strong bond, while smaller bases fit better in tight spaces.
    Base
    Nut
    Thread
    Size
    Lg.
    Wd.
    Thk.
    Wd.
    Ht.
    Hole
    Dia.
    Pkg.
    Qty.
    Pkg.
    316 Stainless Steel
    4-40
    15/16"29/64"3/64"1/4"3/32"13/64"593512A110000000
    4-40
    1 1/2"19/32"3/64"1/4"3/32"13/64"593512A12000000
     

    Round Weld Nuts

    Image of Product. Bottom orientation. Weld Nuts. Round Weld Nuts.
    Image of Product. Bottom orientation. Weld Nuts. Round Weld Nuts.
    With three projections and a short collar, weld these nuts under low-clearance areas without sacrificing strength. The projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. To make welding easier, their collar pilot guides them into the hole and aligns them with the surface while also shielding the threads from weld spatter.
    Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.
    18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.
    Base
    Collar
    Thread
    Size
    Dia.
    Thk.
    Dia.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Steel
    4-40
    5/16"1/16"11/64"0.03"2590583A23000000
     
    18-8 Stainless Steel
    4-40
    5/16"1/16"11/64"0.03"2590583A1700000
     

    Steel Narrow-Base Adhesive-Ready Nuts

    Image of Product. Bottom orientation. Adhesive-Mount Nuts. Steel Narrow-Base Adhesive-Ready Nuts.
    Fit these nuts into channels, corners, and other tight spaces to add strong threads without drilling a hole. They’re ideal for material that’s too thin or too hard and brittle to drill, such as acrylic and carbon fiber. For a strong hold, large holes in the base let adhesive and resin flow through and spread out. You can also mold these nuts into plastics or composites. Thanks to a zinc plating, they resist rusting in wet environments.
    The base of these nuts acts like a flange, distributing pressure evenly across the mounting surface. The larger the base, the more that pressure is spread out; the smaller the base, the tighter the space these nuts can fit into.
    Base
    Nut
    Thread
    Size
    Lg.
    Wd.
    Thk.
    Wd.
    Ht.
    Hole
    Dia.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    4-40
    15/16"29/64"3/64"1/4"3/32"13/64"1593552A110000000
    4-40
    1 1/2"19/32"3/64"1/4"3/32"13/64"593552A1200000
     
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