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    289 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

    Image of Product. Prongless. Bottom orientation. Threaded Inserts. Helical Threaded Inserts, Prongless.

    Prongless

    Restore, reinforce, or create metal threads. 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. Easy-start installation tools compress the diameter of your insert so it fits easily into a tapped hole. These tools are the best choice for preventing misaligned or damaged threads—just make sure you have space to turn the crank.
    Prongless—Without a prong to break off and retrieve, these inserts save time and avoid leftover debris in holes.
    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
    Prongless
     
    18-8 Stainless Steel
    0-80
    		0.060"52 Ga.
    		0.064"—5000000000000000000000000000000000000000000000000000000000000
    0-80
    		0.090"52 Ga.
    		0.064"—500000000000000000000000000000000000000000000000000000000
    0-80
    		0.120"52 Ga.
    		0.064"—500000000000000000000000000000000000000000000000000000000
    1-64
    		0.073"46 Ga.
    		0.081"—500000000000000000000000000000000000000000000000000000000
    1-64
    		0.110"46 Ga.
    		0.081"—500000000000000000000000000000000000000000000000000000000
    1-64
    		0.146"46 Ga.
    		0.081"—500000000000000000000000000000000000000000000000000000000
    2-56
    		0.086"41 Ga.
    		0.096"NAS1130-02-101000000000000000000000000000000000000000000000000000000000
    2-56
    		0.129"41 Ga.
    		0.096"NAS1130-02-151000000000000000000000000000000000000000000000000000000000
    2-56
    		0.172"41 Ga.
    		0.096"NAS1130-02-201000000000000000000000000000000000000000000000000000000000
    2-56
    		0.215"3/32"
    		0.094"NAS1130-02-251000000000000000000000000000000000000000000000000000000000
    2-56
    		0.258"3/32"
    		0.094"NAS1130-02-301000000000000000000000000000000000000000000000000000000000
    4-40
    		0.112"31 Ga.
    		0.120"NAS1130-04-101000000000000000000000000000000000000000000000000000000000
    4-40
    		0.168"31 Ga.
    		0.120"NAS1130-04-151000000000000000000000000000000000000000000000000000000000
    4-40
    		0.224"31 Ga.
    		0.120"NAS1130-04-201000000000000000000000000000000000000000000000000000000000
    4-40
    		0.280"31 Ga.
    		0.120"NAS1130-04-251000000000000000000000000000000000000000000000000000000000
    4-40
    		0.336"31 Ga.
    		0.120"NAS1130-04-301000000000000000000000000000000000000000000000000000000000
    6-32
    		0.138"25 Ga.
    		0.150"NAS1130-06-101000000000000000000000000000000000000000000000000000000000
    6-32
    		0.207"25 Ga.
    		0.150"NAS1130-06-151000000000000000000000000000000000000000000000000000000000
    6-32
    		0.276"25 Ga.
    		0.150"NAS1130-06-201000000000000000000000000000000000000000000000000000000000
    6-32
    		0.345"26 Ga.
    		0.147"NAS1130-06-251000000000000000000000000000000000000000000000000000000000
    6-32
    		0.414"26 Ga.
    		0.147"NAS1130-06-301000000000000000000000000000000000000000000000000000000000
    8-32
    		0.164"16 Ga.
    		0.177"NAS1130-08-101000000000000000000000000000000000000000000000000000000000
    8-32
    		0.246"16 Ga.
    		0.177"NAS1130-08-151000000000000000000000000000000000000000000000000000000000
    8-32
    		0.328"16 Ga.
    		0.177"NAS1130-08-201000000000000000000000000000000000000000000000000000000000
    8-32
    		0.414"17 Ga.
    		0.173"NAS1130-08-251000000000000000000000000000000000000000000000000000000000
    8-32
    		0.492"17 Ga.
    		0.173"NAS1130-08-301000000000000000000000000000000000000000000000000000000000
    10-24
    		0.190"5 Ga.
    		0.206"NAS1130-3C-101000000000000000000000000000000000000000000000000000000000
    10-24
    		0.285"5 Ga.
    		0.206"NAS1130-3C-151000000000000000000000000000000000000000000000000000000000
    10-24
    		0.380"5 Ga.
    		0.206"NAS1130-3C-201000000000000000000000000000000000000000000000000000000000
    10-24
    		0.475"13/64"
    		0.203"NAS1130-3C-251000000000000000000000000000000000000000000000000000000000
    10-24
    		0.570"13/64"
    		0.203"NAS1130-3C-301000000000000000000000000000000000000000000000000000000000
    10-32
    		0.190"13/64"
    		0.203"NAS1130-3-101000000000000000000000000000000000000000000000000000000000
    10-32
    		0.285"13/64"
    		0.203"NAS1130-3-151000000000000000000000000000000000000000000000000000000000
    10-32
    		0.380"13/64"
    		0.203"NAS1130-3-201000000000000000000000000000000000000000000000000000000000
    10-32
    		0.475"13/64"
    		0.203"NAS1130-3-251000000000000000000000000000000000000000000000000000000000
    10-32
    		0.570"13/64"
    		0.203"NAS1130-3-301000000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.250"H
    		0.266"NAS1130-4-101000000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.375"H
    		0.266"NAS1130-4-151000000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.500"H
    		0.266"NAS1130-4-201000000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.625"17/64"
    		0.266"NAS1130-4-251000000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.750"17/64"
    		0.266"NAS1130-4-301000000000000000000000000000000000000000000000000000000000
    1/4"-28
    		0.250"17/64"
    		0.266"NAS1130-4F-101000000000000000000000000000000000000000000000000000000000
    1/4"-28
    		0.375"17/64"
    		0.266"NAS1130-4F-151000000000000000000000000000000000000000000000000000000000
    1/4"-28
    		0.500"17/64"
    		0.266"NAS1130-4F-201000000000000000000000000000000000000000000000000000000000
    1/4"-28
    		0.625"17/64"
    		0.266"NAS1130-4F-251000000000000000000000000000000000000000000000000000000000
    5/16"-18
    		0.312"21/64"
    		0.328"NAS1130-5C-101000000000000000000000000000000000000000000000000000000000
    5/16"-18
    		0.469"21/64"
    		0.328"NAS1130-5C-151000000000000000000000000000000000000000000000000000000000
    5/16"-18
    		0.625"21/64"
    		0.328"NAS1130-5C-201000000000000000000000000000000000000000000000000000000000
    5/16"-18
    		0.781"21/64"
    		0.328"NAS1130-5C-251000000000000000000000000000000000000000000000000000000000
    5/16"-18
    		0.938"21/64"
    		0.328"NAS1130-5C-301000000000000000000000000000000000000000000000000000000000
    5/16"-24
    		0.312"21/64"
    		0.328"NAS1130-5F-101000000000000000000000000000000000000000000000000000000000
    5/16"-24
    		0.468"21/64"
    		0.328"NAS1130-5F-151000000000000000000000000000000000000000000000000000000000
    5/16"-24
    		0.624"21/64"
    		0.328"NAS1130-5F-201000000000000000000000000000000000000000000000000000000000
    3/8"-16
    		0.375"25/64"
    		0.391"NAS1130-6C-101000000000000000000000000000000000000000000000000000000000
    3/8"-16
    		0.562"25/64"
    		0.391"NAS1130-6C-151000000000000000000000000000000000000000000000000000000000
    3/8"-16
    		0.750"25/64"
    		0.391"NAS1130-6C-201000000000000000000000000000000000000000000000000000000000
    3/8"-16
    		0.938"25/64"
    		0.391"NAS1130-6C-251000000000000000000000000000000000000000000000000000000000
    3/8"-16
    		1.125"25/64"
    		0.391"NAS1130-6C-301000000000000000000000000000000000000000000000000000000000
    3/8"-24
    		0.375"25/64"
    		0.391"NAS1130-6F-101000000000000000000000000000000000000000000000000000000000
    3/8"-24
    		0.563"25/64"
    		0.391"NAS1130-6F-151000000000000000000000000000000000000000000000000000000000
    3/8"-24
    		0.750"25/64"
    		0.391"NAS1130-6F-201000000000000000000000000000000000000000000000000000000000
    3/8"-24
    		0.938"25/64"
    		0.391"—1000000000000000000000000000000000000000000000000000000000
    M2 x 0.4 mm2 mm2.1 mm
    		2.1 mm—50000000000000000000000000000000000000000000000000000000000
    M2 x 0.4 mm3 mm2.1 mm
    		2.1 mm—50000000000000000000000000000000000000000000000000000000000
    M2 x 0.4 mm4 mm2.1 mm
    		2.1 mm—50000000000000000000000000000000000000000000000000000000000
    M2.5 x 0.45 mm2.5 mm37 Ga.
    		0.104"NA0276M2A-101000000000000000000000000000000000000000000000000000000000
    M2.5 x 0.45 mm3.8 mm37 Ga.
    		0.104"NA0276M2A-151000000000000000000000000000000000000000000000000000000000
    M2.5 x 0.45 mm5 mm37 Ga.
    		0.104"NA0276M2A-201000000000000000000000000000000000000000000000000000000000
    M2.5 x 0.45 mm6.3 mm37 Ga.
    		0.104"NA0276M2-251000000000000000000000000000000000000000000000000000000000
    M3 x 0.5 mm3 mm3.2 mm
    		3.2 mmNA0276M3-101000000000000000000000000000000000000000000000000000000000
    M3 x 0.5 mm4.5 mm3.2 mm
    		3.2 mmNA0276M3-151000000000000000000000000000000000000000000000000000000000
    M3 x 0.5 mm6 mm3.2 mm
    		3.2 mmNA0276M3-201000000000000000000000000000000000000000000000000000000000
    M4 x 0.7 mm4 mm19 Ga.
    		0.166"NA0276M4-101000000000000000000000000000000000000000000000000000000000
    M4 x 0.7 mm6 mm19 Ga.
    		0.166"NA0276M4-151000000000000000000000000000000000000000000000000000000000
    M4 x 0.7 mm8 mm19 Ga.
    		0.166"NA0276M4-201000000000000000000000000000000000000000000000000000000000
    M5 x 0.8 mm5 mm5.3 mm
    		5.3 mmNA0276M5-101000000000000000000000000000000000000000000000000000000000
    M5 x 0.8 mm7.5 mm5.3 mm
    		5.3 mmNA0276M5-151000000000000000000000000000000000000000000000000000000000
    M5 x 0.8 mm10 mm5.3 mm
    		5.3 mmNA0276M5-201000000000000000000000000000000000000000000000000000000000
    M6 x 1 mm6 mm6.3 mm
    		6.3 mmNA0276M6-101000000000000000000000000000000000000000000000000000000000
    M6 x 1 mm9 mm6.3 mm
    		6.3 mmNA0276M6-151000000000000000000000000000000000000000000000000000000000
    M6 x 1 mm12 mm6.3 mm
    		6.3 mmNA0276M6-201000000000000000000000000000000000000000000000000000000000
    M8 x 1.25 mm8 mm8.4 mm
    		8.4 mmNA0276M8-101000000000000000000000000000000000000000000000000000000000
    M8 x 1.25 mm12 mm8.4 mm
    		8.4 mmNA0276M8-151000000000000000000000000000000000000000000000000000000000
    M8 x 1.25 mm16 mm8.4 mm
    		8.4 mmNA0276M8-201000000000000000000000000000000000000000000000000000000000
    M10 x 1.5 mm10 mm10.5 mm
    		10.5 mmNA0276M10-101000000000000000000000000000000000000000000000000000000000
    M10 x 1.5 mm15 mm10.5 mm
    		10.5 mmNA0276M10-15500000000000000000000000000000000000000000000000000000000
    M10 x 1.5 mm20 mm10.5 mm
    		10.5 mmNA0276M10-20500000000000000000000000000000000000000000000000000000000
    M12 x 1.75 mm12 mm12.5 mm
    		12.5 mmNA0276M12-10500000000000000000000000000000000000000000000000000000000
    M12 x 1.75 mm18 mm12.5 mm
    		12.5 mmNA0276M12-15500000000000000000000000000000000000000000000000000000000
    M12 x 1.75 mm24 mm12.5 mm
    		12.5 mmNA0276M12-20500000000000000000000000000000000000000000000000000000000
     
    Extraction Tools
    Remove installed helical inserts.
    For Prongless Helical Inserts—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.
    For Thread
    Size
    Each
    For Prongless Helical Inserts
    0-80
    		0000000000000000
    1-64
    		000000000000000
    2-56
    		000000000000000
    4-40
    		000000000000000
    6-32
    		000000000000000
    8-32
    		000000000000000
    10-24
    		000000000000000
    10-32
    		000000000000000
    1/4"-20
    		000000000000000
    1/4"-28
    		000000000000000
    5/16"-18
    		000000000000000
    5/16"-24
    		000000000000000
    3/8"-16
    		000000000000000
    3/8"-24
    		000000000000000
    M2
    		000000000000000
    M2.5
    		000000000000000
    M3
    		000000000000000
    M4
    		000000000000000
    M5
    		000000000000000
    M6
    		000000000000000
    M8
    		000000000000000
    M10
    		000000000000000
    M12
    		000000000000000
     

    Screw-Locking Helical Threaded Inserts

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

    Prongless

    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 automobile parts 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. Easy-start installation tools compress the diameter of your insert so it fits easily into a tapped hole. These tools are the best choice for preventing misaligned or damaged threads—just make sure you have space to turn the crank.
    Prongless—Without a prong to break off and retrieve, these inserts save time and avoid leftover debris in holes.
    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
    Prongless
     
    18-8 Stainless Steel
    2-56
    		0.086"41 Ga.
    		0.096"NAS1130-02L-105000000000000000000000000000000000000000000000000000000000000
    2-56
    		0.129"41 Ga.
    		0.096"NAS1130-02L-15500000000000000000000000000000000000000000000000000000000
    2-56
    		0.172"41 Ga.
    		0.096"NAS1130-02L-20500000000000000000000000000000000000000000000000000000000
    4-40
    		0.112"31 Ga.
    		0.120"NAS1130-04L-10500000000000000000000000000000000000000000000000000000000
    4-40
    		0.168"31 Ga.
    		0.120"NAS1130-04L-15500000000000000000000000000000000000000000000000000000000
    4-40
    		0.224"31 Ga.
    		0.120"NAS1130-04L-20500000000000000000000000000000000000000000000000000000000
    6-32
    		0.138"25 Ga.
    		0.150"NAS1130-06L-10500000000000000000000000000000000000000000000000000000000
    6-32
    		0.207"25 Ga.
    		0.150"NAS1130-06L-15500000000000000000000000000000000000000000000000000000000
    6-32
    		0.276"25 Ga.
    		0.150"NAS1130-06L-20500000000000000000000000000000000000000000000000000000000
    8-32
    		0.164"16 Ga.
    		0.177"NAS1130-08L-10500000000000000000000000000000000000000000000000000000000
    8-32
    		0.246"16 Ga.
    		0.177"NAS1130-08L-15500000000000000000000000000000000000000000000000000000000
    8-32
    		0.328"16 Ga.
    		0.177"NAS1130-08L-20500000000000000000000000000000000000000000000000000000000
    10-24
    		0.190"5 Ga.
    		0.206"NAS1130-3CL-10500000000000000000000000000000000000000000000000000000000
    10-24
    		0.380"5 Ga.
    		0.206"NAS1130-3CL-20500000000000000000000000000000000000000000000000000000000
    10-32
    		0.190"13/64"
    		0.203"NAS1130-3L-10500000000000000000000000000000000000000000000000000000000
    10-32
    		0.285"13/64"
    		0.203"NAS1130-3L-15500000000000000000000000000000000000000000000000000000000
    10-32
    		0.380"13/64"
    		0.203"NAS1130-3L-20500000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.250"H
    		0.266"NAS1130-4L-10500000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.375"H
    		0.266"NAS1130-4L-15500000000000000000000000000000000000000000000000000000000
    M2.5 x 0.45 mm2.5 mm37 Ga.
    		0.104"NA0276M2A-L101000000000000000000000000000000000000000000000000000000000
    M3 x 0.5 mm3 mm3.2 mm
    		3.2 mmNA0276M3-L101000000000000000000000000000000000000000000000000000000000
    M3 x 0.5 mm4.5 mm3.2 mm
    		3.2 mmNA0276M3-L151000000000000000000000000000000000000000000000000000000000
    M3 x 0.5 mm6 mm3.2 mm
    		3.2 mmDIN 8140, NA0276M3-L201000000000000000000000000000000000000000000000000000000000
    M4 x 0.7 mm4 mm19 Ga.
    		0.166"NA0276M4-L101000000000000000000000000000000000000000000000000000000000
    M4 x 0.7 mm6 mm19 Ga.
    		0.166"NA0276M4-L151000000000000000000000000000000000000000000000000000000000
    M4 x 0.7 mm8 mm19 Ga.
    		0.166"NA0276M4-L201000000000000000000000000000000000000000000000000000000000
    M5 x 0.8 mm5 mm5.3 mm
    		5.3 mmNA0276M5-L101000000000000000000000000000000000000000000000000000000000
    M5 x 0.8 mm10 mm5.3 mm
    		5.3 mmNA0276M5-L201000000000000000000000000000000000000000000000000000000000
    M6 x 1 mm6 mm6.3 mm
    		6.3 mmNA0276M6-L101000000000000000000000000000000000000000000000000000000000
    M6 x 1 mm9 mm6.3 mm
    		6.3 mmNA0276M6-L151000000000000000000000000000000000000000000000000000000000
    M6 x 1 mm12 mm6.3 mm
    		6.3 mmNA0276M6-L2010000000000000000000000000000000000000000000000000000000000
     

    Seize-Resistant Helical Threaded Inserts

    Image of Product. Prongless. Bottom orientation. Threaded Inserts. Seize-Resistant Helical Threaded Inserts, Prongless.

    Prongless

    Install and remove screws repeatedly without sticking or binding. These inserts have a dry-film lubricant on their surface for smooth installation. They're ideal for parts that require frequent disassembly for inspection or repair. Also known as Heli-Coil inserts.
    Installation requires a drill bit, a helical insert tap, and an installation tool. Easy-start installation tools compress the diameter of your insert so it fits easily into a tapped hole. These tools are the best choice for preventing misaligned or damaged threads—just make sure you have space to turn the crank.
    Prongless—Without a prong to break off and retrieve, these inserts save time and avoid leftover debris in holes.
    Dry-Film-Lubricated 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
    Prongless
     
    Dry-Film-Lubricated 18-8 Stainless Steel
    2-56
    		0.086"41 Ga.
    		0.096"NAS1130-02-10D5000000000000000000000000000000000000000000000000000000000000
    2-56
    		0.129"41 Ga.
    		0.096"NAS1130-02-15D500000000000000000000000000000000000000000000000000000000
    2-56
    		0.172"41 Ga.
    		0.096"NAS1130-02-20D500000000000000000000000000000000000000000000000000000000
    4-40
    		0.112"31 Ga.
    		0.120"NAS1130-04-10D500000000000000000000000000000000000000000000000000000000
    4-40
    		0.168"31 Ga.
    		0.120"NAS1130-04-15D500000000000000000000000000000000000000000000000000000000
    4-40
    		0.224"31 Ga.
    		0.120"NAS1130-04-20D500000000000000000000000000000000000000000000000000000000
    6-32
    		0.138"25 Ga.
    		0.150"NAS1130-06-10D500000000000000000000000000000000000000000000000000000000
    6-32
    		0.207"25 Ga.
    		0.150"NAS1130-06-15D500000000000000000000000000000000000000000000000000000000
    6-32
    		0.276"25 Ga.
    		0.150"NAS1130-06-20D500000000000000000000000000000000000000000000000000000000
    8-32
    		0.164"16 Ga.
    		0.177"NAS1130-08-10D500000000000000000000000000000000000000000000000000000000
    8-32
    		0.246"16 Ga.
    		0.177"NAS1130-08-15D500000000000000000000000000000000000000000000000000000000
    8-32
    		0.328"16 Ga.
    		0.177"NAS1130-08-20D500000000000000000000000000000000000000000000000000000000
    10-32
    		0.190"13/64"
    		0.203"NAS1130-3-10D500000000000000000000000000000000000000000000000000000000
    10-32
    		0.285"13/64"
    		0.203"NAS1130-3-15D500000000000000000000000000000000000000000000000000000000
    10-32
    		0.380"13/64"
    		0.203"NAS1130-3-20D500000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.250"H
    		0.266"NAS1130-4-10D500000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.375"H
    		0.266"NAS1130-4-15D500000000000000000000000000000000000000000000000000000000
    1/4"-20
    		0.500"H
    		0.266"NAS1130-4-20D500000000000000000000000000000000000000000000000000000000
     

    Prongless Helical Threaded Insert Installation Tools

    Image of Product. Front orientation. Threaded Insert Installation Tools. Prongless Helical Threaded Insert Installation Tools.
    These tools install prongless helical inserts, also known as tangless inserts. Screw the insert onto your installation tool and drive it between a quarter-turn and half-turn below the surface.
    For Thread
    Size
    Handle
    Style
    For Use With
    Each
    Standard (UN) Thread
    0-80
    		StraightHelical Inserts, Screw-Locking Helical Inserts0000000000000000
    1-64
    		StraightHelical Inserts, Screw-Locking Helical Inserts000000000000000
    2-56
    		StraightHelical Inserts, Screw-Locking Helical Inserts000000000000000
    4-40
    		StraightHelical Inserts, Screw-Locking Helical Inserts000000000000000
    6-32
    		StraightHelical Inserts, Screw-Locking Helical Inserts000000000000000
    8-32
    		StraightHelical Inserts, Screw-Locking Helical Inserts000000000000000
    10-24
    		StraightHelical Inserts, Screw-Locking Helical Inserts000000000000000
    1/4"-20
    		StraightHelical Inserts, Screw-Locking Helical Inserts000000000000000
    5/16"-18
    		StraightHelical Inserts, Screw-Locking Helical Inserts000000000000000
    3/8"-16
    		StraightHelical Inserts, Screw-Locking Helical Inserts000000000000000
     
    Metric Thread
    M2 × 0.4 mmStraightHelical Inserts000000000000000
     
    Replacement Tips
    Replacement installation tool tips (sold separately) include one installation tip, two pins, and two springs.
    For Thread
    Size
    Each
    0-80
    		000000000000000
    1-64
    		00000000000000
    2-56
    		00000000000000
    4-40
    		00000000000000
    6-32
    		00000000000000
    8-32
    		00000000000000
    10-24
    		00000000000000
    1/4"-20
    		00000000000000
    5/16"-18
    		00000000000000
    3/8"-16
    		00000000000000
    M2
    		00000000000000

    Easy-Start Prongless Helical Threaded Insert Installation Tools

    Image of Product. Front orientation. Threaded Insert Installation Tools. Easy-Start Prongless Helical Threaded Insert Installation Tools.
    Install prongless (tangless) helical inserts more quickly and consistently than with standard tools. These tools compress your insert’s diameter and align each coil with the thread pitch, guiding it straight 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 an insert onto these tools and drive them a quarter- to half-turn below the material’s surface. Also known as prewinders.
    For Thread
    Size
    Handle
    Style
    For Use With
    Each
    Standard (UN) Thread
    10-32
    		CrankHelical Inserts, Screw-Locking Helical Inserts0000000000000000
    1/4"-28
    		CrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
    5/16"-24
    		CrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
    3/8"-24
    		CrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
     
    Metric Thread
    M2.5 × 0.45 mmCrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
    M3 × 0.5 mmCrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
    M4 × 0.7 mmCrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
    M5 × 0.8 mmCrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
    M6 × 1 mmCrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
    M8 × 1.25 mmCrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
    M10 × 1.5 mmCrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
    M12 × 1.75 mmCrankHelical Inserts, Screw-Locking Helical Inserts000000000000000
     
    Replacement Tips
    Replacement tips (sold separately) come with one installation tip, two pins, and two springs. Tip for 10-32 internal thread size does not require springs and pins.
    For Thread
    Size
    Each
    10-32
    		000000000000000
    1/4"-28
    		00000000000000
    5/16"-24
    		00000000000000
    3/8"-24
    		00000000000000
    M2.5
    		00000000000000
    M3
    		00000000000000
    M4
    		00000000000000
    M5
    		00000000000000
    M6
    		00000000000000
    M8
    		00000000000000
    M10
    		00000000000000
    M12
    		00000000000000

    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
    0-80
    		Helical Inserts, Screw-Locking Helical Inserts0000000000000000000000000000000
    1-64
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    2-56
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    4-40
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    6-32
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    8-32
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    10-24
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    10-32
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    1/4"-20
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    1/4"-28
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    5/16"-18
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    5/16"-24
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    3/8"-16
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    3/8"-24
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    7/16"-20
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    1/2"-20
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
     
    Metric Thread
    M2
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    M2.5
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    M3
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    M4
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    M5
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    M6
    		Helical Inserts, Screw-Locking Helical Inserts00000000000000000000000000000
    M8
    		Helical Inserts, Screw-Locking Helical Inserts000000000000000000000000000000
    M10
    		Helical Inserts, Screw-Locking Helical Inserts000000000000000000000000000000
    M12
    		Helical Inserts, Screw-Locking Helical Inserts000000000000000000000000000000
     

    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, Installation Tool, Through-Hole Tap.

    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.
    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 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    		000000000000000
    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    		000000000000000
     
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