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    57 Products
    About Threaded Inserts
    industrial info icon

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

    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"-12 Thread × 1 3/8" Installed Lg. (2 Each)
    1/2"-20 Thread × 5/8" Installed Lg. (6 Each)
    1/4"-28 Thread × 3/8" Installed Lg. (20 Each)
    3/4"-16 Thread × 1 1/8" Installed Lg. (3 Each)
    3/8"-24 Thread × 1/2" Installed Lg. (10 Each)
    5/16"-24 Thread × 0.438" Installed Lg. (15 Each)
    5/8"-18 Thread × 7/8" Installed Lg. (3 Each)
    7/16"-20 Thread × 5/8" Installed Lg. (10 Each)
    7/8"-14 Thread × 1 1/4" Installed Lg. (3 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"    		0000000000000000
    771"-8 Thread × 1 3/8" Installed Lg. (2 Each)
    1/2"-13 Thread × 5/8" Installed Lg. (6 Each)
    1/4"-20 Thread × 3/8" Installed Lg. (20 Each)
    3/4"-10 Thread × 1 1/8" Installed Lg. (3 Each)
    3/8"-16 Thread × 1/2" Installed Lg. (10 Each)
    5/16"-18 Thread × 0.438" Installed Lg. (15 Each)
    5/8"-11 Thread × 7/8" Installed Lg. (3 Each)
    7/16"-14 Thread × 5/8" Installed Lg. (10 Each)
    7/8"-9 Thread × 1 1/4" Installed Lg. (3 Each)
    9/16"-12 Thread × 0.813" Installed Lg. (5 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"    		000000000000000
     
    18-8 Stainless Steel
    771"-12 Thread × 1 3/8" Installed Lg. (2 Each)
    1/2"-20 Thread × 5/8" Installed Lg. (6 Each)
    1/4"-28 Thread × 3/8" Installed Lg. (20 Each)
    3/4"-16 Thread × 1 1/8" Installed Lg. (3 Each)
    3/8"-24 Thread × 1/2" Installed Lg. (10 Each)
    5/16"-24 Thread × 0.438" Installed Lg. (15 Each)
    5/8"-18 Thread × 7/8" Installed Lg. (3 Each)
    7/16"-20 Thread × 5/8" Installed Lg. (10 Each)
    7/8"-14 Thread × 1 1/4" Installed Lg. (3 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"    		000000000000000
    771"-8 Thread × 1 3/8" Installed Lg. (2 Each)
    1/2"-13 Thread × 5/8" Installed Lg. (6 Each)
    1/4"-20 Thread × 3/8" Installed Lg. (20 Each)
    3/4"-10 Thread × 1 1/8" Installed Lg. (3 Each)
    3/8"-16 Thread × 1/2" Installed Lg. (10 Each)
    5/16"-18 Thread × 0.438" Installed Lg. (15 Each)
    5/8"-11 Thread × 7/8" Installed Lg. (3 Each)
    7/16"-14 Thread × 5/8" Installed Lg. (10 Each)
    7/8"-9 Thread × 1 1/4" Installed Lg. (3 Each)
    9/16"-12 Thread × 0.813" Installed Lg. (5 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"    		000000000000000
     

    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.
    Extra-Thick Wall—Stronger than standard- and thin-wall inserts, use them to reduce the size of tapped holes or replace threads that have been drilled out.
    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
    7/8"-9
    		1 1/4"-12
    		1.250"1 3/16"
    		1.188"40000000000000000000000000000000000003000000000000000
    7/8"-14
    		1 1/4"-12
    		1.250"1 3/16"
    		1.188"4000000000000000000000000000000000300000000000000
    1 1/4"-12
    		1 5/8"-12
    		1.813"—1.563"400000000000000000000000000000000002000000000000000
     
    18-8 Stainless Steel
    7/8"-9
    		1 1/4"-12
    		1.250"1 3/16"
    		1.188"40000000000000000000000000000000003000000000000000
    7/8"-14
    		1 1/4"-12
    		1.250"1 3/16"
    		1.188"4000000000000000000000000000000000————0
     
    Extra-Thick Wall
     
    Black Phosphate-Coated Steel
    3/4"-10
    		1 1/4"-12
    		1.125"1 3/16"
    		1.188"40000000000000000000000000000000003000000000000000
    3/4"-16
    		1 1/4"-12
    		1.125"1 3/16"
    		1.188"4000000000000000000000000000000000————0
     
    18-8 Stainless Steel
    3/4"-10
    		1 1/4"-12
    		1.125"1 3/16"
    		1.188"40000000000000000000000000000000000————0
    3/4"-16
    		1 1/4"-12
    		1.125"1 3/16"
    		1.188"4000000000000000000000000000000000————0
     

    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.
    Extra-Thick Wall—Stronger than standard- and thin-wall inserts, use them to reduce the size of tapped holes or replace threads that have been drilled out.
    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
    7/8"-9
    		1 1/4"-12
    		1.250"1 3/16"
    		1.187"4MS51831A1100000000000000000000000000000000
     
    18-8 Stainless Steel
    7/8"-9
    		1 1/4"-12
    		1.250"1 3/16"
    		1.192"4MS51831-11000000000000000000000000000000
    7/8"-14
    		1 1/4"-12
    		1.250"1 3/16"
    		1.192"4MS51831-21000000000000000———0
     
    Extra-Thick Wall
     
    18-8 Stainless Steel
    3/4"-10
    		1 1/4"-12
    		1.125"1 3/16"
    		1.192"4MS51832-1090000000000000000000000000000
     

    Helical Threaded Insert Removal Tools

    Image of Product. Front orientation. Threaded Insert Removal Tools. Helical Threaded Insert Removal Tools.
    To remove installed helical inserts, place the tip of these tools into the insert and lightly strike the tool’s head. Then, turn the tool counterclockwise with pressure to extract the insert.
    Narrow Profile—The tip of these tools has a narrower angle than standard removal tools to reduce the chance it will dig into your material’s surface when you strike the tool.
    For Thread Size
    Mfr.
    Each
    Standard Profile
    7/8"-9, 7/8"-14, 1"-8, 1"-12, 1"-14, 1 1/8"-7, 1 1/8"-12, 1 1/4"-7, 1 1/4"-12, 1 3/8"-6, 1 3/8"-12, 1 1/2"-6, 1 1/2"-12, M20, M22, M24, M26, M27, M30, M33, M36, M39
    		—000000000000000
     
    Narrow Profile
    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
    		Heli-Coil000000000000000
     

    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
    7/8"-9, 7/8"-141 1/4"-12
    		Straight000000000000000
    1 1/4"-7, 1 1/4"-121 5/8"-12
    		Straight000000000000000
     
    For Extra-Thick-Wall Inserts
    3/4"-10
    		1 1/4"-12
    		Straight00000000000000
     

    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.
    Extra-Thick Wall—Stronger than standard- and thin-wall inserts, use them to reduce the size of tapped holes or replace threads that have been drilled out.
    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
    7/8"-9
    		1 1/4"-12
    		1.250"1 3/16"
    		1.188"43000000000000000
    7/8"-14
    		1 1/4"-12
    		1.250"1 3/16"
    		1.188"4300000000000000
    1 1/4"-12
    		1 5/8"-12
    		1.813"—1.563"42000000000000000
     
    18-8 Stainless Steel
    7/8"-9
    		1 1/4"-12
    		1.250"1 3/16"
    		1.188"43000000000000000
     
    Extra-Thick Wall
     
    Black Phosphate-Coated Steel
    3/4"-10
    		1 1/4"-12
    		1.125"1 3/16"
    		1.188"43000000000000000
     

    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 D.

    Style A

    Style D

    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
    7/8"-9, 7/8"-141 1/4"-12
    		ASlotted End0000000000000
    1 1/4"-7, 1 1/4"-121 5/8"-12
    		ASlotted End000000000000
     
    For Extra-Thick-Wall Inserts
    3/4"-10, 3/4"-161 1/4"-12
    		ASlotted End000000000000
     
    Threaded Insert Installation Tools with Spring
    Image of Product. Front orientation. Threaded Insert Installation Tools. Key-Locking Threaded Insert Installation Tools, Style D.

    Style D

    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
    7/8"-9, 7/8"-141 1/4"-12
    		DSleeve, Slotted End0000000000000000
     
    For Extra-Thick-Wall Inserts
    3/4"-10, 3/4"-161 1/4"-12
    		DSleeve, Slotted End00000000000000
     

    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 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
     
    Dry-Film-Lubricated 18-8 Stainless Steel
    7/8"-9
    		1 1/4"-12
    		1.375"1 3/16"
    		1.188"4MS51831-110L0000000000000000000000000000000
    7/8"-14
    		1 1/4"-12
    		1.375"1 3/16"
    		1.188"4MS51831-210L00000000000000———0
     

    Hollow Plugs

    Image of Product. Front orientation. Contains Annotated. Protective Plugs. Hollow Plugs.
    With a hollow construction, these plugs compress for snug fit. Push into threaded and unthreaded holes to mask parts during coating and finishing. When you’re done, grab and pull the flanged edge to remove.
    Vinyl Plastic—Durable to resist ripping or shredding, even with repeated use. They also hold up to oils, mild acids, and solvents.
    For
    ID
    For Pipe
    Size
    For Thread
    Size
    Ht.
    Max. Temp.,
    ° F
    Color
    Flange
    Dia.
    Pkg.
    Qty.
    Pkg.
    Vinyl Plastic
    1.29"1
    		1 1/4"-12
    		7/8"180Red1 17/32"1000000000000000
     

    Helical Threaded Inserts

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

    Pronged

    Restore, reinforce, or create metal threads. 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. Easy-start installation tools compress the diameter of your insert so it fits easily into a tapped hole. These tools are the best choice for preventing misaligned or damaged threads—just make sure you have space to turn the crank.
    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
    Installation
    Tools
    Inserts with
    Installation Tools
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    Each
    No. of Inserts
    Included
    Each
    Pronged
     
    18-8 Stainless Steel
    1 1/4"-12
    		1.250"1 9/32"
    		1.281"MS1246671000000000000000000000000000000000000000000000000000000000000000————0
    1 1/4"-12
    		1.875"1 9/32"
    		1.281"MS12470710000000000000000000000000000000000000000000000000000000000040000000000000000
     
    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
    		0000000000000000
     

    Tube End Weld Nuts

    Image of Product. Bottom orientation. Weld Nuts. Tube End Weld Nuts.
    Image of Product. Bottom orientation. Weld Nuts. Tube End Weld Nuts.
    Weld these nuts into tube ends to attach threaded fittings such as rod ends. The welded connection is stronger than tapping a tube directly. These nuts are often used to link control arms and suspensions. Also known as tube adapters and weldable threaded tube ends.
    For Tube
    Wall Thk.
    Thread
    Size
    Ht.
    Threading
    Thread
    Lg.
    Each
    4130 Alloy Steel
     
    For 1 3/4" OD Tubes
    0.12"1 1/4"-12
    		2"Fully Threaded2"000000000000000
     
    For 2" OD Tubes
    0.25"1 1/4"-12
    		3 1/4"Fully Threaded3 1/4"00000000000000
     

    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.
    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 1/4"-12
    		1.250"7/8"1 3/16"
    		1.188"40000000000000000000000000000000
     

    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, Installation Tool, Through-Hole Tap, Drill Bit.

    Drill Bit, Installation Tool

    and Through-Hole Tap

    Quickly restore stripped threads—these inserts come with through-hole taps and installation tools.
    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 1/4"-12
    		1.875"1 9/32"
    		1.281"4Drill Bit
    Installation Tool
    Through-Hole Tap    		0000000000000000
     

    Hitch Balls

    Image of Product. Front orientation. Contains Annotated. Hitch Balls.
    Mount these onto a hitch insert, and connect them to a trailer with a hitch-ball coupler. Maximum trailer weight is the total weight being towed.
    For Max. Trailer
    Wt., lb.
    Hitch Ball
    Dia.
    Thread
    Size
    Stud
    Lg.
    Each
    Chrome-Plated Steel Hitch Balls
    10,0002 5/16"1 1/4"-12
    		2 1/8"000000000000
     

    Left-Hand-Thread Tube End Weld Nuts

    Image of Product. Bottom orientation. Weld Nuts. Left-Hand-Thread Tube End Weld Nuts.
    Image of Product. Bottom orientation. Weld Nuts. Left-Hand-Thread Tube End Weld Nuts.
    These weld nuts prevent fasteners from backing out of assemblies that rotate counterclockwise. Their left-hand threads pair with left-hand screws and rods to stop the fastener from loosening as the assembly turns. Weld them to the end of a tube for a stronger connection than tapping the tube directly. Also known as tube adapters and weldable threaded tube ends.
    For Tube
    Wall Thk.
    Thread
    Size
    Ht.
    Threading
    Thread
    Lg.
    Each
    4130 Alloy Steel
     
    For 1 3/4" OD Tubes
    0.12"1 1/4"-12
    		2"Fully Threaded2"000000000000000
     
    For 2" OD Tubes
    0.25"1 1/4"-12
    		3 1/4"Fully Threaded3 1/4"00000000000000
     

    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 1/4"-12
    		Heli-CoilT-HandleThreadedHelical Inserts, Screw-Locking Helical Inserts0000000000000000
     

    Hitch Inserts

    Image of System. Insert Shown with Hitch-Ball Components. Front orientation. Exploded view. Contains Annotated, Border. Hitch Inserts. Hitch Inserts.

    Insert Shown with Hitch-Ball Components

    Use these inserts in hitch-ball connections for towing. They fit into a receiver that's attached to a vehicle. Maximum trailer weight is the total weight being towed. Vertical capacity (also known as tongue weight) represents the weight of the load on the hitch ball.
    Height Adapters for Hitch Balls
    Image of Product. (Shown in Drop Position). Front orientation. Contains Annotated. Hitch Inserts. Hitch Inserts, Height Adapters for Hitch Balls.
    Image of Product. (Shown in Raise Position). Bottom orientation. Contains Annotated. Hitch Inserts. Hitch Inserts, Height Adapters for Hitch Balls.

    (Shown in Drop Position)

    (Shown in Raise Position)

    Height adapters for hitch balls raise or drop the ball to the height that works for your trailer. From the drop position, rotate the adapter 180° to achieve the raise position.
    For Max. Trailer
    Wt., lb.
    Vert. Cap.,
    lb.
    Drop
    Ht.
    Rise
    Ht.
    Overall
    Dp.
    For Hitch Receiver
    Size
    For Hitch Ball
    Thread Size
    Each
    Powder-Coated Steel
    12,0001,2003 1/2"2"10 1/2"2 1/2" Square1 1/4"-12
    		0000000000000
    12,0001,2005"3 1/2"10 1/2"2 1/2" Square1 1/4"-12
    		000000000000
    12,0001,2006"5"10 1/4"2" Square1 1/4"-12
    		000000000000
    12,0001,2006 3/4"5"10 1/2"2 1/2" Square1 1/4"-12
    		000000000000
     

    Reinforced Threaded-Hole Bumpers

    Image of Product. Front orientation. Bumpers. Reinforced Threaded-Hole Bumpers, Style 1.

    Style 1

    With a metal base plate for added strength, these bumpers withstand repeated impacts for a longer service life than all-rubber bumpers. You can also use them as spacers and noise reducers. Twist them onto a threaded stud on your equipment, or pair them with your own stud to create a custom-length bumper.
    Multipurpose NeopreneAbout Multipurpose Neoprene
    Image of Product. Front orientation. Bumpers. Reinforced Threaded-Hole Bumpers, Style 1.

    Style 1

    A good choice for oily equipment that's exposed to sunlight, rain, and ozone. These aren't as oil resistant as Buna-N bumpers, but they can be used outdoors.
    Hardness Rating—The harder the bumper, the better it withstands impact and abrasion over time. The softer the bumper, the more cushioning it provides for objects made of glass, soft metal, and other fragile materials. Bumpers with a medium rating offer a balance of impact resistance and cushioning.
    Thread
    Size
    Dp.
    OD
    Ht.
    Hardness
    Hardness
    Rating
    Color
    Temp.,
    ° F
    Base Plate
    Material
    Nonmarking
    For Use
    Outdoors
    Each
    Style 1
    1 1/4"-12
    		1 1/4"3"2 3/4"Durometer 40AMedium SoftBlack-40 to 200SteelNoYes0000000000000
    1 1/4"-12
    		1 1/4"3"2 3/4"Durometer 75AHardBlack-40 to 200SteelNoYes0000000000000
     
    Abrasion-Resistant Polyurethane RubberAbout Abrasion-Resistant Polyurethane Rubber
    Image of Product. Front orientation. Bumpers. Reinforced Threaded-Hole Bumpers, Style 1.

    Style 1

    Our toughest rubber bumpers, they keep their shape even when knocked and scraped by metal and other abrasive materials. They're often used on industrial vehicles, conveyors, and heavy construction equipment.
    Hardness Rating—The harder the bumper, the better it withstands impact and abrasion over time. The softer the bumper, the more cushioning it provides for objects made of glass, soft metal, and other fragile materials. Bumpers with a medium rating offer a balance of impact resistance and cushioning.
    Thread
    Size
    Dp.
    OD
    Ht.
    Hardness
    Hardness
    Rating
    Color
    Temp.,
    ° F
    Base Plate
    Material
    Nonmarking
    For Use
    Outdoors
    Each
    Style 1
    1 1/4"-12
    		1 1/4"3"2 3/4"Durometer 85AHardRed-40 to 200SteelNoYes0000000000000
     

    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 1/4"-12
    		Straight0000000000000000
     

    Squeeze-Release Caps

    Image of Product. Front orientation. Protective Caps. Squeeze-Release Caps.
    The quickest caps to remove, these release instantly with a pinch of your fingers. They are commonly used to protect threads during shipping and storage or mask against paint and coatings.
    Vinyl Plastic—A good all-around choice, these durable caps won’t rip or shred, even with repeated use. They also hold up to oils, mild acids, and solvents. Caps are flexible and conform to parts for a tight fit.
    For
    OD
    For Pipe
    Size
    For Thread
    Size
    Inside
    Ht.
    Flexibility
    Max. Temp.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    Vinyl Plastic
    1.143"1
    		1 1/4"-12
    		5/8"Flexible180Red1000000000000000
     

    Helical Insert Taps

    Image of Product. Front orientation. Taps. Helical Insert Taps.
    Match the size of helical inserts so they fit tightly when installed in the hole.
    High-Speed Steel—These taps resist heat and wear to stay sharp.
    Plug Chamfer—Our go-to chamfer type. With a longer taper than a bottoming chamfer, they are easier to turn but won't thread as close the bottom of a hole.
    Bottoming Chamfer—Cut all the way to the bottom of blind holes with taps that have the shortest taper. Since these require the most force to turn, they’re often used to finish holes started by taper- or plug-chamfer taps.
    Drill Bit
    Plug Chamfer
    Bottoming
    Chamfer
    For Insert
    Size
    Thread
    Lg.
    Overall
    Lg.
    For Insert
    Thread Type
    No. of
    Flutes
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Each
    Each
    High-Speed Steel
     
    Uncoated
    1 1/4"-12
    		3"6 1/16"UNF
    		41 9/32"
    		1.2813"Square———00000000000000000
    1 1/4"-12
    		3"6 1/16"UNF
    		61 9/32"
    		1.2813"Square0000000000000000———0
     
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