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    16 Products
    About Threaded Inserts
    industrial info icon

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

    Helical Threaded Inserts for Pipe Threads

    Image of Product. Bottom orientation. Threaded Inserts. Helical Threaded Inserts for Pipe Threads.
    Repair or strengthen pipe connections by installing these inserts in a tapped hole. 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
    Installation
    Tools
    Inserts with
    Installation Tools
    Pipe
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    No. of Inserts
    Included
    Each
    Pronged NPT Thread
     
    18-8 Stainless Steel
    1/8
    		0.273"W
    		0.386"591733A40100000091711A25100000090261A20100000001291733A4210000000
    1/4
    		0.394"33/64"
    		0.516"591733A4020000091711A25200000090261A2020000001291733A422000000
    3/8
    		0.407"21/32"
    		0.656"191733A403000091711A25300000090261A2030000001091733A423000000
    1/2
    		0.534"13/16"
    		0.813"191733A404000091711A25400000090261A2040000001091733A424000000
     

    Helical Threaded Inserts for Pipe Threads with Installation Tools

    Image of Product. Front orientation. Threaded Inserts. Helical Threaded Inserts for Pipe Threads with Installation Tools.
    Fix stripped pipe threads fast—these inserts come with drill bits, through-hole taps, and installation tools. 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.
    Pipe
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Inserts
    Included
    Includes
    Each
    Pronged NPT Thread
     
    18-8 Stainless Steel
    1/8
    		0.273"3/8"
    		0.375"12Drill Bit
    Installation Tool
    Through-Hole Tap    		91733A4210000000
    1/4
    		0.394"33/64"
    		0.516"12Drill Bit
    Installation Tool
    Through-Hole Tap    		91733A422000000
    3/8
    		0.407"21/32"
    		0.656"10Drill Bit
    Installation Tool
    Through-Hole Tap    		91733A423000000
    1/2
    		0.534"13/16"
    		0.813"10Drill Bit
    Installation Tool
    Through-Hole Tap    		91733A424000000
     

    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 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.

    Crank Handle

    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 Pipe
    Size
    Mfr.
    Handle
    Style
    Helical Insert
    Tool Drive Type
    For Use With
    Each
    NPT Pipe Thread
    1/8
    		Heli-CoilCrankThreadedHelical Inserts, Screw-Locking Helical Inserts90261A2010000000
    1/4
    		Heli-CoilCrankThreadedHelical Inserts, Screw-Locking Helical Inserts90261A202000000
    3/8
    		Heli-CoilT-HandleThreadedHelical Inserts, Screw-Locking Helical Inserts90261A203000000
    1/2
    		Heli-CoilT-HandleThreadedHelical Inserts, Screw-Locking Helical Inserts90261A204000000
     
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