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    8 Products
    About Threaded Inserts
    industrial info icon

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

    Threaded Insert Type

    Performance

    Application

    Helical Threaded Inserts For Spark Plug Repair

    Image of Product. For Gasket Seats. Front orientation. Threaded Inserts. Helical Threaded Inserts For Spark Plug Repair.
    Image of Product. For Gasket and Taper Seats. Front orientation. Threaded Inserts. Helical Threaded Inserts For Spark Plug Repair, Through-Hole Tap, Installation Tool.

    For Gasket Seats

    For Gasket and

    Taper Seats

    Replace stripped spark plugs in engines. These kits include helical inserts that fit common hole sizes, plus a tap and an installation tool. Also known as Heli-Coil inserts.
    Inserts For Gasket Seats—Use these helical inserts in spark plug ports with a gasket. They cannot be used with taper seat ports.
    Inserts For Gasket and Taper Seats—Although they're designed to fit in taper seat spark plug ports, you can also use these inserts in ports with a gasket seat.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Thread Size
    Thread
    Spacing
    No. of Inserts
    Included
    Includes
    Each
    Inserts For Gasket Seats
     
    18-8 Stainless Steel
    M14 x 1.25 mmExtra Fine
    		30Installation Tool
    M14×1.25 mm Thread × 0.472" Insert Reach (6 Each)
    M14×1.25 mm Thread × 1/2" Insert Reach (6 Each)
    M14×1.25 mm Thread × 3/4" Insert Reach (6 Each)
    M14×1.25 mm Thread × 3/8" Insert Reach (6 Each)
    M14×1.25 mm Thread × 7/16" Insert Reach (6 Each)
    Through-Hole Tap    		91732A0910000000
    M18 x 1.5 mmFine
    		24Installation Tool
    M18×1.5 mm Thread × 1/2" Insert Reach (24 Each)
    Through-Hole Tap    		91732A055000000
     
    Inserts For Gasket and Taper Seats
     
    18-8 Stainless Steel
    M14 x 1.25 mmExtra Fine
    		3Installation Tool
    M14×1.25 mm Thread × Long Insert Reach (1 Each)
    M14×1.25 mm Thread × Normal Insert Reach (1 Each)
    M14×1.25 mm Thread × Short Insert Reach (1 Each)
    Through-Hole Tap    		91732A09500000
    M14 x 1.25 mmExtra Fine
    		18Installation Tool
    M14×1.25 mm Thread × Long Insert Reach (6 Each)
    M14×1.25 mm Thread × Normal Insert Reach (6 Each)
    M14×1.25 mm Thread × Short Insert Reach (6 Each)
    Through-Hole Tap    		91732A097000000
     

    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.
    Black Phosphate-Coated Steel—These inserts resist occasional moisture.
    Thread Size
    For Tap Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Pkg.
    Qty.
    Pkg.
    Standard Wall
     
    Black Phosphate-Coated Steel
    M14 x 1.25 mm3/4"-16
    		0.328"11/16"
    		0.688"590248A092000000
    M14 x 1.25 mm3/4"-16
    		0.453"11/16"
    		0.688"590248A09500000
    M14 x 1.25 mm3/4"-16
    		0.703"11/16"
    		0.688"197084A3150000
    M14 x 1.25 mmM18 x 1.5 mm11.5 mm16.5 mm
    		16.5 mm197084A3140000
     
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