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    51 Products

    Thread-Locking Threaded Inserts

    Image of Product. Bottom orientation. Threaded Inserts. Thread-Locking Threaded Inserts.
    With Loctite® adhesive already on the threads, these inserts won’t back out or vibrate loose. The adhesive reaches full strength after 72 hours. Unlike helical inserts, you can install them with a standard drill and tap. However, thread-locking inserts are difficult to remove and reuse.
    After drilling and tapping your hole, install inserts with a wrench or an installation bit. To use a wrench, thread an insert and two hex nuts onto a bolt. Then, grip and turn the top nut to drive into the hole. For slotted inserts, you can drive with a slotted screwdriver instead.
    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
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Drive
    Style
    Pkg.
    Qty.
    Pkg.
    Each
    Standard Wall
     
    Black Phosphate-Coated Steel
    5/8"-11
    7/8"-9
    0.688"49/64"
    0.766"Slotted
    590248A04400000094110A190000000
    5/8"-11
    7/8"-9
    1.125"49/64"
    0.766"Slotted
    590248A0450000094110A19000000
    5/8"-18
    7/8"-9
    0.688"49/64"
    0.766"Slotted
    590248A0870000094110A19000000
    7/8"-9
    1 1/4"-7
    1.125"1 7/64"
    1.109"Slotted
    190248A0520000094110A23000000
    M14 x 2 mm7/8"-9
    0.688"49/64"
    0.766"Slotted
    597084A1500000094110A18000000
     
    18-8 Stainless Steel
    5/8"-11
    7/8"-9
    0.688"49/64"
    0.766"Slotted
    190247A017000094110A19000000
    M14 x 2 mm7/8"-9
    0.688"49/64"
    0.766"Slotted
    197120A150000094110A18000000
     
    Extra-Thick Wall
     
    Black Phosphate-Coated Steel
    1/2"-13
    7/8"-9
    0.688"49/64"
    0.766"Slotted
    590246A03800000———0
     

    Inch-to-Inch Female Hex Thread Adapters

    Image of Product. Front orientation. Contains Annotated. Thread Adapters. Inch-to-Inch Female Hex Thread Adapters.
    Image of Attribute. Front orientation. Contains Annotated. Thread Adapters. Inch-to-Inch Female Hex Thread Adapters.
    Connect two differently sized male-threaded parts, such as threaded rods, and tighten with a standard wrench. The threads on these adapters have various sizes and spacing, so you can increase or decrease thread size or adapt from coarse to fine threading. You can also use them to change the gender of a connection from male to female. Small adapters can work as threaded standoffs, which position and separate circuit boards and other components in assemblies.
    Zinc-Plated Steel—Zinc-plated steel adapters resist corrosion until the plating wears away and are often used in dry environments.
    18-8 Stainless Steel—18-8 stainless steel adapters withstand wet environments but will corrode when exposed to salt water and other chloride solutions.
    316 Stainless Steel—316 stainless steel adapters are ideal in wet environments and will not corrode when exposed to salt water or harsh chemicals.
    ASTM A108, ASTM A276, ASTM A582, and ASTM B633—Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.
    Thread
    Lg.
    Thread
    Fit
    Hex
    Each
    Thread Size
    (A)
    Thread Size
    (B)
    (A)
    (B)
    (A)
    (B)
    Size
    Length
    Specs. Met
    Tensile Strength,
    psi
    Hardness
    Certificate
    Form
    Certificate Type
    1-9
    10-Up
    Zinc-Plated Steel
    5/8"-11
    7/8"-9
    5/8"3/4"Unified Standard Class 2B
    Unified Standard Class 2B
    1 1/4"1 3/4"ASTM A108, ASTM B63375,000Rockwell B6597088A2350000000000
    3/4"-10
    7/8"-9
    3/4"3/4"Unified Standard Class 2B
    Unified Standard Class 2B
    1 1/4"1 3/4"ASTM A108, ASTM B63375,000Rockwell B6597088A24000000000
    7/8"-9
    1"-8
    7/8"1"Unified Standard Class 2B
    Unified Standard Class 2B
    1 3/8"2"ASTM A108, ASTM B63375,000Rockwell B6597088A30100000000
    7/8"-9
    1 1/4"-7
    7/8"1 1/16"Unified Standard Class 2B
    Unified Standard Class 2B
    1 5/8"3"ASTM A108, ASTM B63375,000Rockwell B6597088A3200000000000
     
    18-8 Stainless Steel
    5/8"-11
    7/8"-9
    5/8"7/8"Unified Standard Class 2B
    Unified Standard Class 2B
    1 1/4"2"ASTM A58285,000Rockwell B80Digital
    Material Certificate with Traceable Lot Number
    98434A1210000000000
    3/4"-10
    7/8"-9
    3/4"7/8"Unified Standard Class 2B
    Unified Standard Class 2B
    1 1/4"2 1/4"ASTM A58285,000Rockwell B80Digital
    Material Certificate with Traceable Lot Number
    98434A1240000000000
    7/8"-9
    1"-8
    7/8"1"Unified Standard Class 2B
    Unified Standard Class 2B
    1 3/8"2"ASTM A58285,000Rockwell B8091072A1880000000000
    7/8"-9
    1 1/4"-7
    7/8"1 1/16"Unified Standard Class 2B
    Unified Standard Class 2B
    1 5/8"3"ASTM A58285,000Rockwell B80Material Certificate with Traceable Lot Number
    91072A1890000000000
     
    316 Stainless Steel
    5/8"-11
    7/8"-9
    5/8"7/8"Unified Standard Class 2B
    Unified Standard Class 2B
    1 1/4"2"ASTM A27675,000Rockwell B83Material Certificate with Traceable Lot Number
    91072A2650000000000
    3/4"-10
    7/8"-9
    3/4"7/8"Unified Standard Class 2B
    Unified Standard Class 2B
    1 1/4"2 1/4"ASTM A27675,000Rockwell B83Digital
    Material Certificate with Traceable Lot Number
    91072A2680000000000
    7/8"-9
    1"-8
    7/8"1"Unified Standard Class 2B
    Unified Standard Class 2B
    1 3/8"2"ASTM A27675,000Rockwell B83Digital
    Material Certificate with Traceable Lot Number
    91072A2710000000000
     

    Steel Socket Nuts

    Image of Product. Front orientation. Socket Nuts. Steel Socket Nuts.
    Also known as Allen nuts, use these with socket head cap screws in recessed holes and tight spaces that don't have enough clearance for a wrench. Tighten them with a 6-point hex key. They can also be used as an insert by pressing or drawing them into nonhardened steel, cast iron, or soft nonferrous metal or by molding them into plastic, ceramic, fiber, and similar materials. Made from alloy steel, they're comparable in strength to Grade 9 bolts.
    Thread
    Size
    OD
    Ht.
    Threading
    Thread
    Dp.
    For Hole
    Dia.
    Hex Key
    Size
    Each
    Alloy Steel
    7/8"-9
    1.36"1.34"Partially Threaded0.7"1.418"7/8"92066A037000000
     

    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 End6721N43000000
     
    For Extra-Thick-Wall Inserts
    7/8"-9, 7/8"-141 3/8"-12
    ASlotted End6721N6300000
     
    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 End93904A7510000000
     
    For Extra-Thick-Wall Inserts
    7/8"-9
    1 3/8"-12
    DSleeve, Slotted End93904A77500000
     

    Helical Threaded Insert Installation Tools

    Image of Product. Front orientation. Threaded Insert Installation Tools. Helical Threaded Insert Installation Tools, T-Handle.

    T-Handle

    Install your pronged helical inserts into tapped holes. Screw an insert onto these tools and drive them a quarter to half-turn below the material’s surface.
    For Thread
    Size
    Handle
    Style
    For Use With
    Each
    Standard (UN) Thread
    7/8"-9
    T-HandleHelical Inserts, Screw-Locking Helical Inserts90261A174000000
     

    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, Installation Tool, Through-Hole Tap.

    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
    7/8"-9
    1.312"29/32"
    0.906"6Drill Bit
    Installation Tool
    Through-Hole Tap
    91732A3200000000
     

    Installation Bits for Slotted-Drive Threaded Inserts

    Image of Product. Front orientation. Threaded Insert Installation Tools. Installation Bits for Slotted-Drive Threaded Inserts.
    For fast installation, use these installation bits with power drills and drill presses.
    For Thread
    Size
    Hex Shank
    Size
    Each
    7/8"-9, 7/8"-143/8"94110A230000000

    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"-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"
    90284A2110000000
     
    18-8 Stainless Steel
    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"
    90284A411000000
     

    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
    Straight92100A739000000
     
    For Extra-Thick-Wall Inserts
    7/8"-9, 7/8"-141 3/8"-12
    Straight93302A73000000
     

    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
    7/8"-9
    1 1/4"-12
    1.250"1 3/16"
    1.188"4390245A021000000
     
    18-8 Stainless Steel
    7/8"-9
    1 1/4"-12
    1.250"1 3/16"
    1.188"4391731A038000000
     

    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.
    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 18-8 Stainless Steel
    7/8"-9
    1 1/4"-12
    1.375"1 3/16"
    1.188"4MS51831-110L97255A15100000093904A7510000000
     

    Thread-Locking Threaded Insert Assortments

    Image of Product. Front orientation. Threaded Inserts. Thread-Locking Threaded Insert Assortments.
    These assortments include various sizes of thread-locking inserts, which won’t back out or loosen from vibration. Also known as E-Z Lok, they come with Loctite® adhesive already applied, and the adhesive reaches full strength after 72 hours. After drilling and tapping your hole, install inserts with a wrench or use an installation bit (not included). To use a wrench, thread an insert and two hex nuts onto a bolt. Then, grip and turn the top nut to drive into 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.
    No. of Inserts
    Included
    Includes
    Thread
    Spacing
    For Tap Thread
    Size
    Drill Bit
    Size
    For Maximum
    Hole Diameter
    Drive
    Style
    Each
    Standard Wall
     
    Black Phosphate-Coated Steel
    221"-14 Thread × 1 1/4" Installed Lg. (2 Each)
    1/2"-20 Thread × 0.656" Installed Lg. (6 Each)
    3/4"-16 Thread × 0.781" Installed Lg. (7 Each)
    5/8"-18 Thread × 0.688" Installed Lg. (7 Each)
    Fine
    3/4"-10
    7/8"-9
    1"-8
    1 3/8"-12
    21/32"
    49/64"
    7/8"
    1 9/32"
    21/32"
    49/64"
    7/8"
    1 9/32"
    Slotted
    90248A115000000
    221"-8 Thread × 1 1/4" Installed Lg. (2 Each)
    1/2"-13 Thread × 0.656" Installed Lg. (6 Each)
    3/4"-10 Thread × 0.781" Installed Lg. (7 Each)
    5/8"-11 Thread × 0.688" Installed Lg. (7 Each)
    Coarse
    3/4"-10
    7/8"-9
    1"-8
    1 3/8"-12
    21/32"
    49/64"
    7/8"
    1 9/32"
    21/32"
    49/64"
    7/8"
    1 9/32"
    Slotted
    90248A11100000
     

    Screw-Locking Helical Threaded Inserts

    Image of Product. Pronged. Bottom orientation. Threaded Inserts. Screw-Locking Helical Threaded Inserts, Pronged.

    Pronged

    The irregularly shaped threads tightly grip screws to prevent them from loosening or backing out under vibration. Use these inserts to create or repair threads in pumps and other machinery that shakes and rattles. Also known as Heli-Coil inserts.
    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
    Installation
    Tools
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    Each
    Pronged
     
    18-8 Stainless Steel
    7/8"-9
    0.875"29/32"
    0.906"NASM21209, MS21209C1410190296A1630000091709A114000000091709A485000000090261A174000000
     

    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"4MS51831A11095101A13800000093904A7510000000
     
    18-8 Stainless Steel
    7/8"-9
    1 1/4"-12
    1.250"1 3/16"
    1.192"4MS51831-11093904A2470000093904A751000000
     
    Extra-Thick Wall
     
    18-8 Stainless Steel
    7/8"-9
    1 3/8"-12
    1.250"1 5/16"
    1.317"4MS51832-11093904A2480000093904A77500000
     

    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
    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
    7/8"-9
    0.875"29/32"
    0.906"MS122089191732A4030000091709A114000000091709A485000000090261A174000000———0
    7/8"-9
    1.312"29/32"
    0.906"MS122129191732A220000091709A11400000091709A48500000090261A17400000691732A3200000000
     
    Extraction Tools

    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"490245A04100000000000092100A739000000390245A021000000
     
    18-8 Stainless Steel
    7/8"-9
    1 1/4"-12
    1.250"1 3/16"
    1.188"491731A074000000000092100A73900000391731A038000000
     
    Extra-Thick Wall
     
    Black Phosphate-Coated Steel
    7/8"-9
    1 3/8"-12
    1.250"1 5/16"
    1.313"493302A630000000000093302A73000000———0
     
    18-8 Stainless Steel
    7/8"-9
    1 3/8"-12
    1.250"1 5/16"
    1.313"493340A83300000000000093302A73000000———0
     
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