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    283 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 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.
    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"—591990A5010000091709A68100000091709A68200000091049A1030000000
    0-80
    		0.090"52 Ga.
    		0.064"—591990A502000091709A6810000091709A6820000091049A103000000
    0-80
    		0.120"52 Ga.
    		0.064"—591990A503000091709A6810000091709A6820000091049A103000000
    1-64
    		0.073"46 Ga.
    		0.081"—591990A504000091709A0900000091709A6830000091049A101000000
    1-64
    		0.110"46 Ga.
    		0.081"—591990A505000091709A0900000091709A6830000091049A101000000
    1-64
    		0.146"46 Ga.
    		0.081"—591990A506000091709A0900000091709A6830000091049A101000000
    2-56
    		0.086"41 Ga.
    		0.096"NAS1130-02-101091990A201000091709A0980000091709A4010000091049A601000000
    2-56
    		0.129"41 Ga.
    		0.096"NAS1130-02-151091990A204000091709A0980000091709A4010000091049A601000000
    2-56
    		0.172"41 Ga.
    		0.096"NAS1130-02-201091990A207000091709A0980000091709A4010000091049A601000000
    2-56
    		0.215"3/32"
    		0.094"NAS1130-02-251091990A519000091709A0980000091709A4010000091049A601000000
    2-56
    		0.258"3/32"
    		0.094"NAS1130-02-301091990A520000091709A0980000091709A4010000091049A601000000
    4-40
    		0.112"31 Ga.
    		0.120"NAS1130-04-101091990A210000091709A1010000091709A4070000091049A604000000
    4-40
    		0.168"31 Ga.
    		0.120"NAS1130-04-151091990A213000091709A1010000091709A4070000091049A604000000
    4-40
    		0.224"31 Ga.
    		0.120"NAS1130-04-201091990A216000091709A1010000091709A4070000091049A604000000
    4-40
    		0.280"31 Ga.
    		0.120"NAS1130-04-251091990A521000091709A1010000091709A4070000091049A604000000
    4-40
    		0.336"31 Ga.
    		0.120"NAS1130-04-301091990A522000091709A1010000091709A4070000091049A604000000
    6-32
    		0.138"25 Ga.
    		0.150"NAS1130-06-101091990A219000091709A1020000091709A4160000091049A607000000
    6-32
    		0.207"25 Ga.
    		0.150"NAS1130-06-151091990A222000091709A1020000091709A4160000091049A607000000
    6-32
    		0.276"25 Ga.
    		0.150"NAS1130-06-201091990A225000091709A1020000091709A4160000091049A607000000
    6-32
    		0.345"26 Ga.
    		0.147"NAS1130-06-251091990A523000091709A1020000091709A4160000091049A607000000
    6-32
    		0.414"26 Ga.
    		0.147"NAS1130-06-301091990A524000091709A1020000091709A4160000091049A607000000
    8-32
    		0.164"16 Ga.
    		0.177"NAS1130-08-101091990A228000091709A1030000091709A4220000091049A610000000
    8-32
    		0.246"16 Ga.
    		0.177"NAS1130-08-151091990A231000091709A1030000091709A4220000091049A610000000
    8-32
    		0.328"16 Ga.
    		0.177"NAS1130-08-201091990A234000091709A1030000091709A4220000091049A610000000
    8-32
    		0.414"17 Ga.
    		0.173"NAS1130-08-251091990A525000091709A1030000091709A4220000091049A610000000
    8-32
    		0.492"17 Ga.
    		0.173"NAS1130-08-301091990A526000091709A1030000091709A4220000091049A610000000
    10-24
    		0.190"5 Ga.
    		0.206"NAS1130-3C-101091990A237000091709A1040000091709A4280000091049A613000000
    10-24
    		0.285"5 Ga.
    		0.206"NAS1130-3C-151091990A240000091709A1040000091709A4280000091049A613000000
    10-24
    		0.380"5 Ga.
    		0.206"NAS1130-3C-201091990A243000091709A1040000091709A4280000091049A613000000
    10-24
    		0.475"13/64"
    		0.203"NAS1130-3C-251091990A527000091709A1040000091709A4280000091049A613000000
    10-24
    		0.570"13/64"
    		0.203"NAS1130-3C-301091990A528000091709A1040000091709A4280000091049A613000000
    10-32
    		0.190"13/64"
    		0.203"NAS1130-3-101091990A246000091709A1510000091709A4310000091049A812000000
    10-32
    		0.285"13/64"
    		0.203"NAS1130-3-151091990A249000091709A1510000091709A4310000091049A812000000
    10-32
    		0.380"13/64"
    		0.203"NAS1130-3-201091990A252000091709A1510000091709A4310000091049A812000000
    10-32
    		0.475"13/64"
    		0.203"NAS1130-3-251091990A541000091709A1510000091709A4310000091049A812000000
    10-32
    		0.570"13/64"
    		0.203"NAS1130-3-301091990A542000091709A1510000091709A4310000091049A812000000
    1/4"-20
    		0.250"H
    		0.266"NAS1130-4-101091990A255000091709A1050000091709A4370000091049A619000000
    1/4"-20
    		0.375"H
    		0.266"NAS1130-4-151091990A258000091709A1050000091709A4370000091049A619000000
    1/4"-20
    		0.500"H
    		0.266"NAS1130-4-201091990A261000091709A1050000091709A4370000091049A619000000
    1/4"-20
    		0.625"17/64"
    		0.266"NAS1130-4-251091990A529000091709A1050000091709A4370000091049A619000000
    1/4"-20
    		0.750"17/64"
    		0.266"NAS1130-4-301091990A530000091709A1050000091709A4370000091049A619000000
    1/4"-28
    		0.250"17/64"
    		0.266"NAS1130-4F-101091990A543000091709A1520000091709A4400000091049A109000000
    1/4"-28
    		0.375"17/64"
    		0.266"NAS1130-4F-151091990A544000091709A1520000091709A4400000091049A109000000
    1/4"-28
    		0.500"17/64"
    		0.266"NAS1130-4F-201091990A545000091709A1520000091709A4400000091049A109000000
    1/4"-28
    		0.625"17/64"
    		0.266"NAS1130-4F-251091990A546000091709A1520000091709A4400000091049A109000000
    5/16"-18
    		0.312"21/64"
    		0.328"NAS1130-5C-101091990A531000091709A1060000091709A4430000091049A107000000
    5/16"-18
    		0.469"21/64"
    		0.328"NAS1130-5C-151091990A532000091709A1060000091709A4430000091049A107000000
    5/16"-18
    		0.625"21/64"
    		0.328"NAS1130-5C-201091990A533000091709A1060000091709A4430000091049A107000000
    5/16"-18
    		0.781"21/64"
    		0.328"NAS1130-5C-251091990A534000091709A1060000091709A4430000091049A107000000
    5/16"-18
    		0.938"21/64"
    		0.328"NAS1130-5C-301091990A535000091709A1060000091709A4430000091049A107000000
    5/16"-24
    		0.312"21/64"
    		0.328"NAS1130-5F-101091990A547000091709A1530000091709A4460000091049A110000000
    5/16"-24
    		0.468"21/64"
    		0.328"NAS1130-5F-151091990A548000091709A1530000091709A4460000091049A110000000
    5/16"-24
    		0.624"21/64"
    		0.328"NAS1130-5F-201091990A549000091709A1530000091709A4460000091049A110000000
    3/8"-16
    		0.375"25/64"
    		0.391"NAS1130-6C-101091990A536000091709A1070000091709A4490000091049A108000000
    3/8"-16
    		0.562"25/64"
    		0.391"NAS1130-6C-151091990A537000091709A1070000091709A4490000091049A108000000
    3/8"-16
    		0.750"25/64"
    		0.391"NAS1130-6C-201091990A538000091709A1070000091709A4490000091049A108000000
    3/8"-16
    		0.938"25/64"
    		0.391"NAS1130-6C-251091990A539000091709A1070000091709A4490000091049A108000000
    3/8"-16
    		1.125"25/64"
    		0.391"NAS1130-6C-301091990A540000091709A1070000091709A4490000091049A108000000
    3/8"-24
    		0.375"25/64"
    		0.391"NAS1130-6F-101091990A550000091709A1540000091709A4520000091049A111000000
    3/8"-24
    		0.563"25/64"
    		0.391"NAS1130-6F-151091990A551000091709A1540000091709A4520000091049A111000000
    3/8"-24
    		0.750"25/64"
    		0.391"NAS1130-6F-201091990A552000091709A1540000091709A4520000091049A111000000
    3/8"-24
    		0.938"25/64"
    		0.391"—1091990A553000091709A1540000091709A4520000091049A111000000
    M2 x 0.4 mm2 mm2.1 mm
    		2.1 mm—591990A507000091709A24000000091709A23000000091049A102000000
    M2 x 0.4 mm3 mm2.1 mm
    		2.1 mm—591990A508000091709A24000000091709A23000000091049A102000000
    M2 x 0.4 mm4 mm2.1 mm
    		2.1 mm—591990A509000091709A24000000091709A23000000091049A102000000
    M2.5 x 0.45 mm2.5 mm37 Ga.
    		0.104"NA0276M2A-101091990A401000091709A6780000091709A5780000091049A620000000
    M2.5 x 0.45 mm3.8 mm37 Ga.
    		0.104"NA0276M2A-151091990A404000091709A6780000091709A5780000091049A620000000
    M2.5 x 0.45 mm5 mm37 Ga.
    		0.104"NA0276M2A-201091990A407000091709A6780000091709A5780000091049A620000000
    M2.5 x 0.45 mm6.3 mm37 Ga.
    		0.104"NA0276M2-251091990A554000091709A6780000091709A5780000091049A620000000
    M3 x 0.5 mm3 mm3.2 mm
    		3.2 mmNA0276M3-101091990A408000091709A3550000091709A5240000091049A622000000
    M3 x 0.5 mm4.5 mm3.2 mm
    		3.2 mmNA0276M3-151091990A410000091709A3550000091709A5240000091049A622000000
    M3 x 0.5 mm6 mm3.2 mm
    		3.2 mmNA0276M3-201091990A412000091709A3550000091709A5240000091049A622000000
    M4 x 0.7 mm4 mm19 Ga.
    		0.166"NA0276M4-101091990A413000091709A3590000091709A5270000091049A624000000
    M4 x 0.7 mm6 mm19 Ga.
    		0.166"NA0276M4-151091990A416000091709A3590000091709A5270000091049A624000000
    M4 x 0.7 mm8 mm19 Ga.
    		0.166"NA0276M4-201091990A419000091709A3590000091709A5270000091049A624000000
    M5 x 0.8 mm5 mm5.3 mm
    		5.3 mmNA0276M5-101091990A422000091709A2010000091709A5300000091049A626000000
    M5 x 0.8 mm7.5 mm5.3 mm
    		5.3 mmNA0276M5-151091990A425000091709A2010000091709A5300000091049A626000000
    M5 x 0.8 mm10 mm5.3 mm
    		5.3 mmNA0276M5-201091990A428000091709A2010000091709A5300000091049A626000000
    M6 x 1 mm6 mm6.3 mm
    		6.3 mmNA0276M6-101091990A429000091709A2020000091709A5330000091049A628000000
    M6 x 1 mm9 mm6.3 mm
    		6.3 mmNA0276M6-151091990A434000091709A2020000091709A5330000091049A628000000
    M6 x 1 mm12 mm6.3 mm
    		6.3 mmNA0276M6-201091990A437000091709A2020000091709A5330000091049A628000000
    M8 x 1.25 mm8 mm8.4 mm
    		8.4 mmNA0276M8-101091990A510000091709A2040000091709A5420000091049A104000000
    M8 x 1.25 mm12 mm8.4 mm
    		8.4 mmNA0276M8-151091990A511000091709A2040000091709A5420000091049A104000000
    M8 x 1.25 mm16 mm8.4 mm
    		8.4 mmNA0276M8-201091990A512000091709A2040000091709A5420000091049A104000000
    M10 x 1.5 mm10 mm10.5 mm
    		10.5 mmNA0276M10-101091990A513000091709A2050000091709A5480000091049A105000000
    M10 x 1.5 mm15 mm10.5 mm
    		10.5 mmNA0276M10-15591990A514000091709A2050000091709A5480000091049A105000000
    M10 x 1.5 mm20 mm10.5 mm
    		10.5 mmNA0276M10-20591990A515000091709A2050000091709A5480000091049A105000000
    M12 x 1.75 mm12 mm12.5 mm
    		12.5 mmNA0276M12-10591990A516000091709A2060000091709A5570000091049A106000000
    M12 x 1.75 mm18 mm12.5 mm
    		12.5 mmNA0276M12-15591990A517000091709A2060000091709A5570000091049A106000000
    M12 x 1.75 mm24 mm12.5 mm
    		12.5 mmNA0276M12-20591990A518000091709A2060000091709A5570000091049A106000000
     
    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
    		91049A3760000000
    1-64
    		91049A377000000
    2-56
    		91049A631000000
    4-40
    		91049A634000000
    6-32
    		91049A637000000
    8-32
    		91049A640000000
    10-24
    		91049A643000000
    10-32
    		91049A646000000
    1/4"-20
    		91049A649000000
    1/4"-28
    		91049A653000000
    5/16"-18
    		91049A651000000
    5/16"-24
    		91049A654000000
    3/8"-16
    		91049A652000000
    3/8"-24
    		91049A655000000
    M2
    		91049A378000000
    M2.5
    		91049A362000000
    M3
    		91049A364000000
    M4
    		91049A366000000
    M5
    		91049A368000000
    M6
    		91049A370000000
    M8
    		91049A379000000
    M10
    		91049A380000000
    M12
    		91049A381000000
     

    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 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.
    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-10591630A4210000091709A09800000091709A40100000091049A6010000000
    2-56
    		0.129"41 Ga.
    		0.096"NAS1130-02L-15591630A424000091709A0980000091709A4010000091049A601000000
    2-56
    		0.172"41 Ga.
    		0.096"NAS1130-02L-20591630A427000091709A0980000091709A4010000091049A601000000
    4-40
    		0.112"31 Ga.
    		0.120"NAS1130-04L-10591630A430000091709A1010000091709A4070000091049A604000000
    4-40
    		0.168"31 Ga.
    		0.120"NAS1130-04L-15591630A433000091709A1010000091709A4070000091049A604000000
    4-40
    		0.224"31 Ga.
    		0.120"NAS1130-04L-20591630A436000091709A1010000091709A4070000091049A604000000
    6-32
    		0.138"25 Ga.
    		0.150"NAS1130-06L-10591630A439000091709A1020000091709A4160000091049A607000000
    6-32
    		0.207"25 Ga.
    		0.150"NAS1130-06L-15591630A442000091709A1020000091709A4160000091049A607000000
    6-32
    		0.276"25 Ga.
    		0.150"NAS1130-06L-20591630A445000091709A1020000091709A4160000091049A607000000
    8-32
    		0.164"16 Ga.
    		0.177"NAS1130-08L-10591630A448000091709A1030000091709A4220000091049A610000000
    8-32
    		0.246"16 Ga.
    		0.177"NAS1130-08L-15591630A451000091709A1030000091709A4220000091049A610000000
    8-32
    		0.328"16 Ga.
    		0.177"NAS1130-08L-20591630A454000091709A1030000091709A4220000091049A610000000
    10-24
    		0.190"5 Ga.
    		0.206"NAS1130-3CL-10591630A457000091709A1040000091709A4280000091049A613000000
    10-24
    		0.380"5 Ga.
    		0.206"NAS1130-3CL-20591630A463000091709A1040000091709A4280000091049A613000000
    10-32
    		0.190"13/64"
    		0.203"NAS1130-3L-10591630A466000091709A1510000091709A4310000091049A812000000
    10-32
    		0.285"13/64"
    		0.203"NAS1130-3L-15591630A469000091709A1510000091709A4310000091049A812000000
    10-32
    		0.380"13/64"
    		0.203"NAS1130-3L-20591630A472000091709A1510000091709A4310000091049A812000000
    1/4"-20
    		0.250"H
    		0.266"NAS1130-4L-10591630A475000091709A1050000091709A4370000091049A619000000
    1/4"-20
    		0.375"H
    		0.266"NAS1130-4L-15591630A478000091709A1050000091709A4370000091049A619000000
    M2.5 x 0.45 mm2.5 mm37 Ga.
    		0.104"NA0276M2A-L101091630A221000091709A6780000091709A5780000091049A620000000
    M3 x 0.5 mm3 mm3.2 mm
    		3.2 mmNA0276M3-L101091630A230000091709A3550000091709A5240000091049A622000000
    M3 x 0.5 mm4.5 mm3.2 mm
    		3.2 mmNA0276M3-L151091630A235000091709A3550000091709A5240000091049A622000000
    M3 x 0.5 mm6 mm3.2 mm
    		3.2 mmDIN 8140, NA0276M3-L201091630A283000091709A3550000091709A5240000091049A622000000
    M4 x 0.7 mm4 mm19 Ga.
    		0.166"NA0276M4-L101091630A256000091709A3590000091709A5270000091049A624000000
    M4 x 0.7 mm6 mm19 Ga.
    		0.166"NA0276M4-L151091630A237000091709A3590000091709A5270000091049A624000000
    M4 x 0.7 mm8 mm19 Ga.
    		0.166"NA0276M4-L201091630A239000091709A3590000091709A5270000091049A624000000
    M5 x 0.8 mm5 mm5.3 mm
    		5.3 mmNA0276M5-L101091630A242000091709A2010000091709A5300000091049A626000000
    M5 x 0.8 mm10 mm5.3 mm
    		5.3 mmNA0276M5-L201091630A248000091709A2010000091709A5300000091049A626000000
    M6 x 1 mm6 mm6.3 mm
    		6.3 mmNA0276M6-L101091630A251000091709A2020000091709A5330000091049A628000000
    M6 x 1 mm9 mm6.3 mm
    		6.3 mmNA0276M6-L151091630A254000091709A2020000091709A5330000091049A628000000
    M6 x 1 mm12 mm6.3 mm
    		6.3 mmNA0276M6-L201091630A2570000091709A2020000091709A5330000091049A628000000
     

    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 Inserts91049A1030000000
    1-64
    		StraightHelical Inserts, Screw-Locking Helical Inserts91049A101000000
    2-56
    		StraightHelical Inserts, Screw-Locking Helical Inserts91049A601000000
    4-40
    		StraightHelical Inserts, Screw-Locking Helical Inserts91049A604000000
    6-32
    		StraightHelical Inserts, Screw-Locking Helical Inserts91049A607000000
    8-32
    		StraightHelical Inserts, Screw-Locking Helical Inserts91049A610000000
    10-24
    		StraightHelical Inserts, Screw-Locking Helical Inserts91049A613000000
    1/4"-20
    		StraightHelical Inserts, Screw-Locking Helical Inserts91049A619000000
    5/16"-18
    		StraightHelical Inserts, Screw-Locking Helical Inserts91049A107000000
    3/8"-16
    		StraightHelical Inserts, Screw-Locking Helical Inserts91049A108000000
     
    Metric Thread
    M2 × 0.4 mmStraightHelical Inserts91049A102000000
     
    Replacement Tips
    Replacement installation tool tips (sold separately) include one installation tip, two pins, and two springs.
    For Thread
    Size
    Each
    0-80
    		91049A201000000
    1-64
    		91049A20200000
    2-56
    		91049A70200000
    4-40
    		91049A70500000
    6-32
    		91049A70800000
    8-32
    		91049A71100000
    10-24
    		91049A71400000
    1/4"-20
    		91049A72000000
    5/16"-18
    		91049A20700000
    3/8"-16
    		91049A20800000
    M2
    		91049A20300000

    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.
    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"NAS1130-02-10D591990A3010000091709A09800000091709A40100000091049A6010000000
    2-56
    		0.129"41 Ga.
    		0.096"NAS1130-02-15D591990A304000091709A0980000091709A4010000091049A601000000
    2-56
    		0.172"41 Ga.
    		0.096"NAS1130-02-20D591990A307000091709A0980000091709A4010000091049A601000000
    4-40
    		0.112"31 Ga.
    		0.120"NAS1130-04-10D591990A310000091709A1010000091709A4070000091049A604000000
    4-40
    		0.168"31 Ga.
    		0.120"NAS1130-04-15D591990A313000091709A1010000091709A4070000091049A604000000
    4-40
    		0.224"31 Ga.
    		0.120"NAS1130-04-20D591990A316000091709A1010000091709A4070000091049A604000000
    6-32
    		0.138"25 Ga.
    		0.150"NAS1130-06-10D591990A319000091709A1020000091709A4160000091049A607000000
    6-32
    		0.207"25 Ga.
    		0.150"NAS1130-06-15D591990A322000091709A1020000091709A4160000091049A607000000
    6-32
    		0.276"25 Ga.
    		0.150"NAS1130-06-20D591990A325000091709A1020000091709A4160000091049A607000000
    8-32
    		0.164"16 Ga.
    		0.177"NAS1130-08-10D591990A328000091709A1030000091709A4220000091049A610000000
    8-32
    		0.246"16 Ga.
    		0.177"NAS1130-08-15D591990A331000091709A1030000091709A4220000091049A610000000
    8-32
    		0.328"16 Ga.
    		0.177"NAS1130-08-20D591990A334000091709A1030000091709A4220000091049A610000000
    10-32
    		0.190"13/64"
    		0.203"NAS1130-3-10D591990A337000091709A1510000091709A4310000091049A812000000
    10-32
    		0.285"13/64"
    		0.203"NAS1130-3-15D591990A340000091709A1510000091709A4310000091049A812000000
    10-32
    		0.380"13/64"
    		0.203"NAS1130-3-20D591990A343000091709A1510000091709A4310000091049A812000000
    1/4"-20
    		0.250"H
    		0.266"NAS1130-4-10D591990A355000091709A1050000091709A4370000091049A619000000
    1/4"-20
    		0.375"H
    		0.266"NAS1130-4-15D591990A358000091709A1050000091709A4370000091049A619000000
    1/4"-20
    		0.500"H
    		0.266"NAS1130-4-20D591990A361000091709A1050000091709A4370000091049A619000000
     

    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 Inserts91049A8120000000
    1/4"-28
    		CrankHelical Inserts, Screw-Locking Helical Inserts91049A109000000
    5/16"-24
    		CrankHelical Inserts, Screw-Locking Helical Inserts91049A110000000
    3/8"-24
    		CrankHelical Inserts, Screw-Locking Helical Inserts91049A111000000
     
    Metric Thread
    M2.5 × 0.45 mmCrankHelical Inserts, Screw-Locking Helical Inserts91049A620000000
    M3 × 0.5 mmCrankHelical Inserts, Screw-Locking Helical Inserts91049A622000000
    M4 × 0.7 mmCrankHelical Inserts, Screw-Locking Helical Inserts91049A624000000
    M5 × 0.8 mmCrankHelical Inserts, Screw-Locking Helical Inserts91049A626000000
    M6 × 1 mmCrankHelical Inserts, Screw-Locking Helical Inserts91049A628000000
    M8 × 1.25 mmCrankHelical Inserts, Screw-Locking Helical Inserts91049A104000000
    M10 × 1.5 mmCrankHelical Inserts, Screw-Locking Helical Inserts91049A105000000
    M12 × 1.75 mmCrankHelical Inserts, Screw-Locking Helical Inserts91049A106000000
     
    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
    		91049A914000000
    1/4"-28
    		91049A20900000
    5/16"-24
    		91049A21000000
    3/8"-24
    		91049A21100000
    M2.5
    		91049A75000000
    M3
    		91049A75200000
    M4
    		91049A75400000
    M5
    		91049A75600000
    M6
    		91049A75800000
    M8
    		91049A20400000
    M10
    		91049A20500000
    M12
    		91049A20600000

    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 Inserts91049A376000000091049A501000000
    1-64
    		Helical Inserts, Screw-Locking Helical Inserts91049A37700000091049A50200000
    2-56
    		Helical Inserts, Screw-Locking Helical Inserts91049A63100000091049A72300000
    4-40
    		Helical Inserts, Screw-Locking Helical Inserts91049A63400000091049A72600000
    6-32
    		Helical Inserts, Screw-Locking Helical Inserts91049A63700000091049A72900000
    8-32
    		Helical Inserts, Screw-Locking Helical Inserts91049A64000000091049A73200000
    10-24
    		Helical Inserts, Screw-Locking Helical Inserts91049A64300000091049A73500000
    10-32
    		Helical Inserts, Screw-Locking Helical Inserts91049A64600000091049A73800000
    1/4"-20
    		Helical Inserts, Screw-Locking Helical Inserts91049A64900000091049A74100000
    1/4"-28
    		Helical Inserts, Screw-Locking Helical Inserts91049A65300000091049A37300000
    5/16"-18
    		Helical Inserts, Screw-Locking Helical Inserts91049A65100000091049A37100000
    5/16"-24
    		Helical Inserts, Screw-Locking Helical Inserts91049A65400000091049A37400000
    3/8"-16
    		Helical Inserts, Screw-Locking Helical Inserts91049A65200000091049A37200000
    3/8"-24
    		Helical Inserts, Screw-Locking Helical Inserts91049A65500000091049A37500000
    7/16"-20
    		Helical Inserts, Screw-Locking Helical Inserts91049A65600000091049A74300000
    1/2"-20
    		Helical Inserts, Screw-Locking Helical Inserts91049A65800000091049A74500000
     
    Metric Thread
    M2
    		Helical Inserts, Screw-Locking Helical Inserts91049A37800000091049A50800000
    M2.5
    		Helical Inserts, Screw-Locking Helical Inserts91049A36200000091049A50300000
    M3
    		Helical Inserts, Screw-Locking Helical Inserts91049A36400000091049A50400000
    M4
    		Helical Inserts, Screw-Locking Helical Inserts91049A36600000091049A50500000
    M5
    		Helical Inserts, Screw-Locking Helical Inserts91049A36800000091049A50600000
    M6
    		Helical Inserts, Screw-Locking Helical Inserts91049A37000000091049A50700000
    M8
    		Helical Inserts, Screw-Locking Helical Inserts91049A37900000091049A509000000
    M10
    		Helical Inserts, Screw-Locking Helical Inserts91049A38000000091049A511000000
    M12
    		Helical Inserts, Screw-Locking Helical Inserts91049A38100000091049A512000000
     

    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    		91732A095000000
    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
     
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