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    28 Products
    About Threaded Inserts
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    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 BSPP Thread
     
    18-8 Stainless Steel
    1/8
    		0.188"25/64"
    		0.391"191733A4070000091711A11100000090261A221000000————0
    1/4
    		0.375"17/32"
    		0.531"191733A408000091711A1120000090261A22200000————0
    3/8
    		0.562"43/64"
    		0.672"191733A409000091711A11300000090261A22300000————0
    1/2
    		0.750"27/32"
    		0.844"191733A411000091711A11400000090261A22400000————0
     
    Pronged NPT Thread
     
    18-8 Stainless Steel
    1/8
    		0.273"W
    		0.386"591733A4010000091711A2510000090261A2010000001291733A4210000000
    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
     
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