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    100 Products

    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
    3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, M103/8"94110A160000000
    7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, M123/8"94110A17000000

    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.
    Thin Wall—Use these inserts near the edge of workpieces or wherever you only have space for a small hole. They're also lighter than standard and extra-thick wall inserts for applications with strict weight limits.
    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
    7/16"-20
    		5/8"-11
    		0.656"17/32"
    		0.531"Slotted
    		590248A08400000094110A170000000
     
    18-8 Stainless Steel
    7/16"-20
    		5/8"-11
    		0.656"17/32"
    		0.531"Slotted
    		190247A025000094110A17000000
     
    Thin Wall
     
    Black Phosphate-Coated Steel
    7/16"-20
    		9/16"-12
    		0.563"33/64"
    		0.516"Slotted
    		590259A1580000094110A17000000
     
    18-8 Stainless Steel
    5/16"-18
    		7/16"-20
    		0.438"25/64"
    		0.391"Slotted
    		594165A2430000094110A14000000
    5/16"-24
    		7/16"-20
    		0.438"25/64"
    		0.391"Slotted
    		594165A2470000094110A14000000
    7/16"-20
    		9/16"-18
    		0.563"33/64"
    		0.516"Slotted
    		194165A263000094110A16000000
    M8 x 1.25 mm7/16"-20
    		0.438"25/64"
    		0.391"Slotted
    		197120A320000094110A15000000
     

    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
    6-32, 6-40, 8-32, 8-36, 10-24, 10-32, 12-24, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-16, 7/8"-9, 7/8"-14, 1"-8, 1"-12, 1"-14, M4, M5, M6, M7, M8, M9, M10, M12, M13, M14, M15, M16, M18, M20, M22, M24
    		—90254A113000000
     
    Narrow Profile
    7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 1/2"-28, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 5/8"-24, 3/4"-10, 3/4"-16, 3/4"-20, 7/8"-9, 7/8"-14, 7/8"-20, 1"-8, 1"-12, 1"-14, M12, M14, M16, M18, M20, M22, M24
    		Heli-Coil90254A33000000
     

    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.
    Thin Wall—Use these inserts near the edge of workpieces or wherever you only have space for a small hole. They're also lighter than standard and extra-thick wall inserts for applications with strict weight limitations.
    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
    7/16"-20
    		5/8"-11
    		0.625"37/64"
    		0.578"490245A075000000000092100A721000000690245A055000000
     
    18-8 Stainless Steel
    7/16"-20
    		5/8"-11
    		0.625"37/64"
    		0.578"491731A066000000000092100A72100000691731A03100000
     
    Thin Wall
     
    Black Phosphate-Coated Steel
    7/16"-20
    		9/16"-12
    		0.563"33/64"
    		0.516"492070A2600000000093875A02500000692070A36300000
     
    18-8 Stainless Steel
    7/16"-20
    		9/16"-12
    		0.563"33/64"
    		0.516"493340A325000000000093875A02500000693340A706000000
     
    Extra-Thick Wall
     
    Black Phosphate-Coated Steel
    7/16"-20
    		3/4"-16
    		0.625"45/64"
    		0.703"493302A560000000000093302A71000000————0
     
    18-8 Stainless Steel
    7/16"-20
    		3/4"-16
    		0.625"45/64"
    		0.703"493340A823000000000093302A71000000————0
     

    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.
    Thin Wall—Use these inserts near the edge of workpieces or wherever you only have space for a small hole. They're also lighter than standard and extra-thick wall inserts for applications with strict weight limitations.
    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"    		90284A2150000000
     
    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"    		90284A415000000
     
    Thin Wall
     
    Black Phosphate-Coated Steel
    811/2"-20 Thread × 5/8" Installed Lg. (6 Each)
    1/4"-28 Thread × 3/8" Installed Lg. (20 Each)
    3/8"-24 Thread × 1/2" Installed Lg. (10 Each)
    5/16"-24 Thread × 0.438" Installed Lg. (15 Each)
    7/16"-20 Thread × 0.563" Installed Lg. (10 Each)
    10-32 Thread × 0.313" Installed Lg. (20 Each)
    Installation Tool    		Fine
    		5/16"-18
    3/8"-16
    7/16"-14
    1/2"-13
    9/16"-12
    5/8"-11
    		29/64"
    33/64"
    37/64"
    I
    Q
    X
    		0.272"
    0.332"
    0.397"
    0.453"
    0.516"
    0.578"    		90284A300000000
     
    18-8 Stainless Steel
    811/2"-20 Thread × 5/8" Installed Lg. (6 Each)
    1/4"-28 Thread × 3/8" Installed Lg. (20 Each)
    3/8"-24 Thread × 1/2" Installed Lg. (10 Each)
    5/16"-24 Thread × 0.438" Installed Lg. (15 Each)
    7/16"-20 Thread × 0.563" Installed Lg. (10 Each)
    10-32 Thread × 0.313" Installed Lg. (20 Each)
    Installation Tool    		Fine
    		5/16"-18
    3/8"-16
    7/16"-14
    1/2"-13
    9/16"-12
    5/8"-11
    		29/64"
    33/64"
    37/64"
    I
    Q
    X
    		0.272"
    0.332"
    0.397"
    0.453"
    0.516"
    0.578"    		90284A500000000
     

    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
    Prong
    Break-Off Tools
    Inserts with
    Installation Tools
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    Each
    Each
    No. of Inserts
    Included
    Each
    Pronged
     
    18-8 Stainless Steel
    7/16"-20
    		0.438"29/64"
    		0.453"MS1246591091732A5280000091709A15500000091709A45800000090261A165000000092955A20300000001098356A143000000
    7/16"-20
    		0.656"29/64"
    		0.453"MS1246991091732A235000091709A1550000091709A4580000090261A16500000092955A2030000001091732A93600000
    7/16"-20
    		0.875"29/64"
    		0.453"MS124739591732A755000091709A1550000091709A4580000090261A16500000092955A203000000————0
     
    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
    7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 1/2"-28, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 5/8"-24, 3/4"-10, 3/4"-16, 3/4"-20, 7/8"-9, 7/8"-14, 7/8"-20, 1"-8, 1"-12, 1"-14, M12, M14, M16, M18, M20, M22, M24
    		90254A330000000
     

    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.
    Thin Wall—Use these inserts near the edge of workpieces or wherever you only have space for a small hole. They're also lighter than standard and extra-thick wall inserts for applications with strict weight limitations.
    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.
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Locking
    Keys
    Specs. Met
    Each
    Standard Wall
     
    High-Strength Cadmium-Plated Alloy Steel
    7/16"-20
    		5/8"-11
    		0.625"37/64"
    		0.578"4MS51831A205, NAS1395-795101A12900000
     
    18-8 Stainless Steel
    7/16"-20
    		5/8"-11
    		0.625"37/64"
    		0.583"4MS51831-205, NAS1395C793904A2290000
     
    Thin Wall
     
    High-Strength Cadmium-Plated Alloy Steel
    7/16"-20
    		9/16"-12
    		0.563"33/64"
    		0.516"4MS51830A205, NAS1394-795101A1210000
     
    18-8 Stainless Steel
    7/16"-20
    		9/16"-12
    		0.563"33/64"
    		0.521"4MS51830-205, NAS1394C793904A2160000
     

    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 Thin-Wall Inserts
    7/16"-14, 7/16"-209/16"-12
    		Straight93875A025000000
     
    For Thick-Wall Inserts
    7/16"-14, 7/16"-205/8"-11
    		Straight92100A72100000
     
    For Extra-Thick-Wall Inserts
    7/16"-14, 7/16"-203/4"-16
    		Straight93302A71000000
     

    Helical Threaded Insert Assortments with Installation Tools

    Image of Product. Front orientation. Threaded Inserts. Helical Threaded Insert Assortments with Installation Tools.
    Repair damaged threads or create new ones. These convenient assortments include helical inserts, an installation tool for each thread size, a drill bit, and a tap. The inserts are also known as Heli-Coil inserts.
    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.
    No. of Inserts
    Included
    Includes
    Thread
    Spacing
    Drill Bit Size
    For Max. Hole Dia.
    Each
    Pronged
     
    18-8 Stainless Steel
    187/16"-20 Thread × 0.438" Installed Lg. (6 Each)
    7/16"-20 Thread × 0.656" Installed Lg. (6 Each)
    7/16"-20 Thread × 7/8" Installed Lg. (6 Each)
    Drill Bit
    Installation Tool
    Prong Break-Off Tool
    Through-Hole Tap    		Fine
    		29/64"
    		0.453"91732A935000000
    601/2"-20 Thread × 3/4" Installed Lg. (6 Each)
    1/4"-28 Thread × 3/8" Installed Lg. (12 Each)
    3/8"-24 Thread × 0.562" Installed Lg. (12 Each)
    5/16"-24 Thread × 0.469" Installed Lg. (12 Each)
    7/16"-20 Thread × 0.656" Installed Lg. (6 Each)
    10-32 Thread × 0.285" Installed Lg. (12 Each)
    Drill Bits
    Installation Tools
    Through-Hole Taps    		Fine
    		13/64"
    17/64"
    21/64"
    25/64"
    29/64"
    33/64"
    		0.203"
    0.266"
    0.328"
    0.391"
    0.453"
    0.516"    		90285A124000000
     

    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
    Prong
    Break-Off Tools
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    Each
    Each
    Pronged
     
    18-8 Stainless Steel
    7/16"-20
    		0.438"29/64"
    		0.453"MS21209F7-10, NASM21209590296A2210000091709A15500000091709A45800000090261A165000000092955A2030000000
    7/16"-20
    		0.656"29/64"
    		0.453"MS21209F7-15, NASM21209590296A222000091709A1550000091709A4580000090261A16500000092955A203000000
    7/16"-20
    		0.875"29/64"
    		0.453"MS21209F7-20, NASM21209190296A223000091709A1550000091709A4580000090261A16500000092955A203000000
     

    Swage-Locking Threaded Inserts

    Image of Product. Bottom orientation. Threaded Inserts. Swage-Locking Threaded Inserts.
    Image of Specification. Front orientation. Contains Annotated. Threaded Inserts. Swage-Locking Threaded Inserts.
    Add strong threads to the edges of soft metal without bulging or cracking the material. These inserts have thinner walls than our key-locking and thread-locking inserts, so they don’t need as much space around them. The knurls press (swage) into the material to keep inserts in place when you tighten or loosen a screw.
    To install these inserts, you need a drill bit, a counterbore, a standard tap, an installation tool, and a hammer. Drill a hole, counterbore the top, and tap it. Place the insert into the installation tool, then hand-tighten it into the tapped hole. Strike the tool to secure the insert and drive the knurls into the surrounding material.
    High-Strength 17-4 PH Stainless Steel—The strongest stainless steel inserts we offer. They handle high-stress installations, such as pump and compressor housings, and the heavy vibration of aircraft parts. They won’t rust in wet and outdoor environments but can’t withstand the harsh chemicals and acids that 316 stainless steel can.
    Inserts
    Installation
    Tools
    For
    Counterbore
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    For Max.
    Hole Dia.
    Dia.
    Dp.
    Mil. Spec.
    Each
    Each
    High-Strength 17-4 PH Stainless Steel
    3/8"-16
    		7/16"-20
    		0.563"0.404"0.437"0.113"MIL-DTL-45932/193570A1120000006645N1080000000
    3/8"-24
    		7/16"-20
    		0.563"0.404"0.437"0.113"MIL-DTL-45932/193570A113000006645N108000000
    7/16"-20
    		1/2"-20
    		0.672"0.468"0.5"0.113"MIL-DTL-45932/193570A115000006645N109000000
     

    Self-Aligning Key-Locking Threaded Inserts for Soft Metal

    Image of Product. Bottom orientation. Threaded Inserts. Self-Aligning Key-Locking Threaded Inserts for Soft Metal.
    Align threads with off-center parts. These inserts have floating threads that shift slightly so you can insert screws at a slight angle as you fasten two parts together. They're 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.
    Inserts
    Installation
    Tools
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Locking
    Keys
    Each
    Each
    Standard Wall
     
    High-Strength Cadmium-Plated Alloy Steel
    10-24
    		7/16"-20
    		0.375"13/32"
    		0.406"293522A1050000006642N1050000000
    10-32
    		7/16"-20
    		0.375"13/32"
    		0.406"293522A106000006642N105000000
    7/16"-20
    		7/8"-14
    		0.688"53/64"
    		0.828"493522A115000006642N109000000
     

    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 B.
    Image of Product. Front orientation. Threaded Insert Installation Tools. Key-Locking Threaded Insert Installation Tools, Style D.

    Style A

    Style B

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

    Style A

    Style B

    For Thread Size
    For Tap Thread
    Size
    Style
    Features
    Each
    For Thin-Wall Inserts
    7/16"-14, 7/16"-209/16"-12
    		BSleeve, Slotted End6721N27000000
     
    For Thick-Wall Inserts
    7/16"-14, 7/16"-205/8"-11
    		BSleeve, Slotted End6721N3700000
     
    For Extra-Thick-Wall Inserts
    7/16"-14, 7/16"-203/4"-16
    		ASlotted End6721N5700000
     
    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 Thin-Wall Inserts
    7/16"-14, 7/16"-209/16"-12
    		DSleeve, Slotted End93904A725000000
     
    For Thick-Wall Inserts
    10-24, 10-327/16"-20
    		DSleeve, Slotted End6642N105000000
    7/16"-14, 7/16"-205/8"-11
    		DSleeve, Slotted End93904A73900000
    7/16"-14, 7/16"-2011/16"-11
    		DSleeve, Slotted End93904A27100000
    7/16"-14, 7/16"-207/8"-14
    		DSleeve, Slotted End6642N109000000
     

    Seize-Resistant Swage-Locking Threaded Inserts

    Image of Product. Bottom orientation. Threaded Inserts. Seize-Resistant Swage-Locking Threaded Inserts.
    Image of Specification. Front orientation. Contains Annotated. Threaded Inserts. Seize-Resistant Swage-Locking Threaded Inserts.
    Smoothly install these inserts for strong threads near the edges and corners of soft metal surfaces. They’re lubricated to prevent sticking as you thread them in. Since these have thinner walls than our key-locking and thread-locking inserts, they don’t need as much space and won't bulge or crack the material. The knurls press (swage) into the material to keep inserts in place when you tighten or loosen a screw.
    To install these inserts, you need a drill bit, a counterbore, a standard tap, an installation tool, and a hammer. Drill a hole, counterbore the top, and tap it. Place the insert into the installation tool, then hand-tighten it into the tapped hole. Strike the tool to secure the insert and drive the knurls into the surrounding material.
    High-Strength Dry-Film-Lubricated Cadmium-Plated Alloy Steel—Stronger than our 17-4 PH stainless steel inserts, these inserts absorb impact without cracking and stand up to high-pressure applications. The cadmium plating prevents corrosion in wet environments.
    Inserts
    Installation
    Tools
    For
    Counterbore
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    For Max.
    Hole Dia.
    Dia.
    Dp.
    Mil. Spec.
    Each
    Each
    High-Strength Dry-Film-Lubricated Cadmium-Plated Alloy Steel
    3/8"-16
    		7/16"-20
    		0.563"0.404"0.437"0.113"MIL-DTL-45932/193572A1120000006645N1080000000
    3/8"-24
    		7/16"-20
    		0.563"0.404"0.437"0.113"MIL-DTL-45932/193572A113000006645N108000000
    7/16"-20
    		1/2"-20
    		0.672"0.468"0.5"0.113"MIL-DTL-45932/193572A115000006645N109000000
     

    Installation Tools for Swage-Locking Threaded Inserts

    Image of Product. Front orientation. Threaded Insert Installation Tools. Installation Tools for Swage-Locking Threaded Inserts.
    Set swage-locking inserts into place. Use these installation tools to hand-tighten the insert into the tapped hole. Then hammer the tool to press (or swage) the knurls of the insert into the material. You should choose the tool that matches your insert’s thread size and tap thread size.
    For Thread Size
    For Tap Thread
    Size
    Each
    3/8"-16, 3/8"-247/16"-20
    		6645N1080000000
    7/16"-14, 7/16"-201/2"-20
    		6645N109000000

    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, Crank 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.

    Crank 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
    7/16"-20
    		—CrankThreadedHelical Inserts, Screw-Locking Helical Inserts1338N330000000
    7/16"-20
    		Heli-CoilCrankThreadedHelical Inserts, Screw-Locking Helical Inserts90261A165000000
     
    Other Threaded Insert Installation Tools
    Image of Product. No Handle. Front orientation. Threaded Insert Installation Tools. Easy-Start Helical Threaded Insert Installation Tools.

    No Handle

    Square Shank—These tools don’t have a handle. Attach them to a tap wrench to turn.
    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.
    Shank
    Type
    Helical Insert
    Tool Drive Type
    For Use With
    Each
    Standard (UN) Thread
    7/16"-20
    		Heli-CoilSquareThreadedHelical Inserts93060A045000000
     

    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
    7/16"-20
    		0.438"29/64"
    		0.453"10Drill Bit
    Installation Tool
    Through-Hole Tap    		98356A143000000
    7/16"-20
    		0.656"29/64"
    		0.453"10Drill Bit
    Installation Tool
    Through-Hole Tap    		91732A93600000
     

    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.
    Thin Wall—Use these inserts near the edge of workpieces or wherever you only have space for a small hole. They're also lighter than standard and extra-thick wall inserts for applications with strict weight limitations.
    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.
    Thread
    Size
    For Tap Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Locking
    Keys
    Specs. Met
    Each
    Standard Wall
     
    Dry-Film-Lubricated Cadmium-Plated Steel
    7/16"-20
    		5/8"-11
    		0.625"37/64"
    		0.578"4MS51831A205L97255A255000000
     
    Thin Wall
     
    Dry-Film-Lubricated 18-8 Stainless Steel
    7/16"-20
    		9/16"-12
    		0.563"33/64"
    		0.516"4MS51830-205L, NAS1394C7L97255A12600000
     

    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
    7/16"-20
    		0.71"0.72"Partially Threaded0.36"0.733"7/16"92067A03200000
     

    Spring-Loaded Helical Threaded Insert Prong Break-Off Tools

    Image of Product. Front orientation. Threaded Insert Installation Tools. Spring-Loaded Helical Threaded Insert Prong Break-Off Tools.
    Cleanly snap prongs off installed helical inserts with just one hand. Because they work faster than standard prong break-off tools, these are a good choice when you have many prongs to remove. Press your tool into an insert to trigger the spring-loaded punch and snap off the prong.
    For Standard-Length Inserts—Use these tools for inserts that are 1 to 2 times as long as the diameter.
    For Long Inserts—Use these tools for inserts that are 2 1/2 to 3 times as long as the diameter.
    For Thread Size
    Mfr.
    Each
    For Standard-Length Inserts
    7/16"-14, 7/16"-20, 7/16"-28—92955A3210000000
    7/16"-20
    		Heli-Coil92955A203000000
     
    For Long Inserts
    7/16"-14, 7/16"-20—92955A421000000
     

    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.
    Thin Wall—Use these inserts near the edge of workpieces or wherever you only have space for a small hole. They're also lighter than standard and extra-thick wall inserts for applications with strict weight limitations.
    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
    7/16"-20
    		5/8"-11
    		0.625"37/64"
    		0.578"4690245A055000000
     
    18-8 Stainless Steel
    7/16"-20
    		5/8"-11
    		0.625"37/64"
    		0.578"4691731A03100000
     
    Thin Wall
     
    Black Phosphate-Coated Steel
    7/16"-20
    		9/16"-12
    		0.563"33/64"
    		0.516"4692070A36300000
     
    18-8 Stainless Steel
    7/16"-20
    		9/16"-12
    		0.563"33/64"
    		0.516"4693340A706000000
     

    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 5/8" OD Tubes
    0.058"7/16"-20
    		1"Fully Threaded1"94640A17000000
     
    For 3/4" OD Tubes
    0.058"7/16"-20
    		1"Fully Threaded1"94640A2100000
    0.065"7/16"-20
    		1 3/8"Partially Threaded1 1/8"94640A2300000
     
    For 7/8" OD Tubes
    0.058"7/16"-20
    		1 3/8"Partially Threaded1 1/8"94640A1550000
    0.065"7/16"-20
    		1 3/8"Partially Threaded1"94640A2600000
    0.083"7/16"-20
    		1 1/2"Partially Threaded1 1/8"94640A3200000
     
    For 1" OD Tubes
    0.058"7/16"-20
    		1 1/2"Partially Threaded1"94640A3700000
    0.065"7/16"-20
    		1 1/2"Partially Threaded1"94640A3900000
    0.083"7/16"-20
    		1 1/2"Partially Threaded1"94640A4300000
    0.095"7/16"-20
    		1 1/2"Partially Threaded1"94640A4500000
     

    Square Weld Nuts

    Image of Product. Bottom orientation. Weld Nuts. Square Weld Nuts.
    Image of Product. Bottom orientation. Weld Nuts. Square Weld Nuts.
    With four symmetrical projections, these nuts create the strongest hold in our offering. Unlike rectangular weld nuts, each projection is equidistant from the threads, so welds wrap evenly for extra strength and twist resistance. Projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. All nuts have a collar pilot that guides them into the hole, holds them in place while welding, and protects 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.
    Collar
    Thread
    Size
    Wd.
    Ht.
    Dia.
    Ht.
    For Hole
    Dia.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    7/16"-20
    		3/4"5/16"21/32"0.063"43/64"ASME B1.12593975A360000000
    7/16"-20
    		3/4"5/16"21/32"0.094"43/64"ASME B1.11093975A11500000
     

    Weld Nuts

    Image of Product. Top orientation. Weld Nuts. Weld Nuts.
    Image of Product. Bottom orientation. Weld Nuts. Weld Nuts.
    Add permanent threads to thin metal with our go-to weld nuts. Unlike press-fit and rivet nuts, these nuts fuse to the base metal, so they won’t twist and pull out. Three evenly spaced projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. All have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter. You can also install them on thick pieces of metal.
    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.
    Collar
    Thread
    Size
    Wd.
    Ht.
    Dia.
    Ht.
    For Hole
    Dia.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    7/16"-20
    		3/4"21/64"21/32"0.05"43/64"ASME B1.12593560A270000000
    7/16"-20
    		3/4"21/64"21/32"0.085"43/64"ASME B1.11093560A11500000
     

    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 5/8" OD Tubes
    0.058"7/16"-20
    		1"Fully Threaded1"94640A10400000
     
    For 3/4" OD Tubes
    0.058"7/16"-20
    		1"Fully Threaded1"94640A1070000
    0.065"7/16"-20
    		1 3/8"Partially Threaded1 1/8"94640A1080000
     
    For 7/8" OD Tubes
    0.058"7/16"-20
    		1 3/8"Partially Threaded1 1/8"94640A1590000
    0.065"7/16"-20
    		1 3/8"Partially Threaded1"94640A2010000
    0.083"7/16"-20
    		1 1/2"Partially Threaded1 1/8"94640A2040000
     
    For 1" OD Tubes
    0.065"7/16"-20
    		1 1/2"Partially Threaded1"94640A2090000
    0.095"7/16"-20
    		1 1/2"Partially Threaded1"94640A3040000
     

    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, L-Handle.

    L-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
    For Pipe
    Size
    Handle
    Style
    Each
    7/16"-14, 7/16"-16, 7/16"-20, M11 × 1 mm, M11 × 1.25 mm, M11 × 1.5 mm1/8 BSPPL-Handle92450A182000000
     

    Helical Threaded Insert Installation Tools

    Image of Product. No Handle. Front orientation. Threaded Insert Installation Tools. Helical Threaded Insert Installation Tools.

    No 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.
    Square Shank—These tools don’t have a handle. Attach them to a tap wrench to turn.
    For Thread
    Size
    Shank
    Type
    For Use With
    Each
    Standard (UN) Thread
    7/16"-20
    		SquareHelical Inserts, Screw-Locking Helical Inserts93060A085000000
     

    Prongless Helical Threaded Insert Removal Tools

    Image of Product. Front orientation. Threaded Insert Removal Tools. Prongless Helical Threaded Insert Removal Tools.
    Remove prongless inserts without damaging threads or the surface of your material. These tools also back out or adjust inserts that are installed too deep.
    Replacement Tips—Replacement tips (sold separately) come with one removal tip, two pins, and two springs.
    Removal Tools
    Replacement Tips
    For Thread
    Size
    For Use With
    Each
    Each
    Standard (UN) Thread
    7/16"-20
    		Helical Inserts, Screw-Locking Helical Inserts91049A656000000091049A743000000
     
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