Helical Thread Insert Kits

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Helical thread insert kits are used to install threaded fasteners in metals, polymers, wood & composites by repairing stripped / damaged tapped holes or creating threaded holes. They are ideal for... Read More

StyleModelThread SizeDrill SizePrice (inc. GST)
A82144H1 1/2-61 17/32"-
RFQ
A82140H1 1/4-71 9/32"-
RFQ
A82138H1 1/8-71 5/32"-
RFQ
A82142H1 3/8-61 13/32"-
RFQ
A82135H1-81 1/32"-
RFQ
A82124H1/2-1317/32"-
RFQ
A82116H1/4-2017/64"-
RFQ
A82100H2-563/32"-
RFQ
A82131H3/4-1025/32"-
RFQ
A82120H3/8-1625/64"-
RFQ
A82104H4-40#31-
RFQ
A82106H5-40#29-
RFQ
A82129H5/8-1121/32"-
RFQ
A82118H5/16-1821/64"-
RFQ
A82108H6-32#25-
RFQ
A82133H7/8-929/32"-
RFQ
A82122H7/16-1429/64"-
RFQ
A82110H8-3211/64"-
RFQ
A82127H9/16-1219/32"-
RFQ
A82112H10-2413/64"-
RFQ
A82114H12-2415/64"-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A821441 1/2-61 17/32"-
RFQ
A821401 1/4-71 9/32"-
RFQ
A821381 1/8-71 5/32"-
RFQ
A821421 3/8-61 13/32"-
RFQ
A821351-81 1/32"-
RFQ
A821241/2-1317/32"-
RFQ
A821161/4-2017/64"-
RFQ
A821002-563/32"-
RFQ
A821023-48#36-
RFQ
A821313/4-1025/32"-
RFQ
A821203/8-1625/64"-
RFQ
A821044-40#31-
RFQ
A821065-40#29-
RFQ
A821295/8-1121/32"-
RFQ
A821185/16-1821/64"-
RFQ
A821086-32#25-
RFQ
A821337/8-929/32"-
RFQ
A821227/16-1429/64"-
RFQ
A821108-3211/64"-
RFQ
A821279/16-1219/32"-
RFQ
A8211210-2413/64"-
RFQ
A8211412-2415/64"-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A82145H1 1/2-121 17/32"-
RFQ
A82141H1 1/4-121 9/32"-
RFQ
A82139H1 1/8-121 5/32"-
RFQ
A82143H1 3/8-121 13/32"-
RFQ
A82136H1-121 1/64"-
RFQ
A82137H1-141 1/64"-
RFQ
A82126H1/2-2033/64"-
RFQ
A82117H1/4-2817/64"-
RFQ
A82132H3/4-1649/64"-
RFQ
A82121H3/8-2425/64"-
RFQ
A82130H5/8-1841/64"-
RFQ
A82119H5/16-2421/64"-
RFQ
A82134H7/8-1457/64"-
RFQ
A82123H7/16-2029/64"-
RFQ
A82128H9/16-1837/64"-
RFQ
A82113H10-3213/64"-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A821451 1/2-121 17/32"-
RFQ
A821411 1/4-121 9/32"-
RFQ
A821391 1/8-121 5/32"-
RFQ
A821431 3/8-121 13/32"-
RFQ
A821361-121 1/64"-
RFQ
A821371-141 1/64"-
RFQ
A821261/2-2033/64"-
RFQ
A821171/4-2817/64"-
RFQ
A821033-56#37-
RFQ
A821323/4-1649/64"-
RFQ
A821213/8-2425/64"-
RFQ
A821054-48#31-
RFQ
A821305/8-1841/64"-
RFQ
A821195/16-2421/64"-
RFQ
A821096-40#25-
RFQ
A821347/8-1457/64"-
RFQ
A821237/16-2029/64"-
RFQ
A821118-36#17-
RFQ
A821289/16-1837/64"-
RFQ
A8211310-3213/64"-
RFQ
A8211512-2815/64"-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A82153HM3 x 0.51/8"-
RFQ
A82154HM3.5 x 0.6#27-
RFQ
A82155HM4 x 0.711/64"-
RFQ
A82156HM5 x 0.813/64"-
RFQ
A82157HM6 x 11/4"-
RFQ
A82158HM7 x 19/32"-
RFQ
A82159HM8 x 121/64"-
RFQ
A82160HM8 x 1.2521/64"-
RFQ
A82162HM9 x 1.253/8"-
RFQ
A82163HM10 x 113/32"-
RFQ
A82165HM10 x 1.513/32"-
RFQ
A82164HM10 x 1.2513/32"-
RFQ
A82168HM11 x 1.529/64"-
RFQ
A82170HM12 x 1.531/64"-
RFQ
A82169HM12 x 1.2531/64"-
RFQ
A82171HM12 x 1.7531/64"-
RFQ
A82172HM14 x 1.59/16"-
RFQ
A82173HM14 x 237/64"-
RFQ
A82174HM16 x 1.521/32"-
RFQ
A82175HM16 x 221/32"-
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A82176HM18 x 1.523/32"-
RFQ
A82178HM18 x 2.547/64"-
RFQ
A82181HM20 x 2.513/16"-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A82150M2 x 0.4#45-
RFQ
A82151M2.2 x 0.45#42-
RFQ
A82152M2.5 x 0.45#37-
RFQ
A82153M3 x 0.51/8"-
RFQ
A82154M3.5 x 0.6#27-
RFQ
A82155M4 x 0.711/64"-
RFQ
A82156M5 x 0.813/64"-
RFQ
A82157M6 x 11/4"-
RFQ
A82158M7 x 19/32"-
RFQ
A82159M8 x 121/64"-
RFQ
A82160M8 x 1.2521/64"-
RFQ
A82161M9 x 13/8"-
RFQ
A82162M9 x 1.253/8"-
RFQ
A82163M10 x 113/32"-
RFQ
A82165M10 x 1.513/32"-
RFQ
A82164M10 x 1.2513/32"-
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A82166M11 x 17/16"-
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A82168M11 x 1.529/64"-
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A82167M11 x 1.2529/64"-
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A82146M12 x 131/64"-
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A82170M12 x 1.531/64"-
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A82169M12 x 1.2531/64"-
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A82171M12 x 1.7531/64"-
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A82172M14 x 1.59/16"-
RFQ
A82147M14 x 1.259/16"-
RFQ
CHRISLYNN -

Precision 8 Pitch Professional Kits

StyleModelThread SizeDrill SizePrice (inc. GST)
A823041 1/2-81 1/2"A$ 948.42
A823021 1/4-81 1/4"A$ 821.86
A823011 1/8-81 9/64"A$ 766.73
A823061 3/4-81 3/4"A$ 1234.91
A823031 3/8-81 3/8"A$ 1106.36
A823051 5/8-81 5/8"A$ 1544.85
A823071 7/8-81 7/8"A$ 1754.95
B823122 1/2-82 1/2"A$ 3360.78
B823102 1/4-82 1/4"A$ 2419.55
B823092 1/8-82 1/8"A$ 2113.51
B823142 3/4-82 3/4"A$ 3766.65
B823112 3/8-82 3/8"A$ 3226.00
B823132 5/8-82 5/8"A$ 3762.59
B823152 7/8-82 7/8"A$ 4213.95
A823082-82"A$ 1633.38
B823203 1/2-83 1/2"A$ 5975.57
B823183 1/4-83 1/4"A$ 5170.94
B823173 1/8-83 1/8"A$ 4954.67
B823193 3/8-83 3/8"A$ 5466.15
B823163-83"A$ 4726.05
C823244-84"-
RFQ
CHRISLYNN -

Precision Professional Kits, Metric, Giant

StyleModelThread SizeDrill SizePrice (inc. GST)
A82187XM26 x 1.51 3/64"A$ 735.09
A82188M27 x 1.51 5/64"A$ 825.44
A82189M27 x 21 3/32"A$ 792.27
A82190M27 x 31 3/32"A$ 785.49
A82191M28 x 1.51 1/8"A$ 1038.05
A82192M30 x 1.51 13/64"A$ 819.26
A82193M30 x 21 13/64"A$ 855.01
B82193XM30 x 31 7/32"-
RFQ
A82194M30 x 3.51 7/32"A$ 812.69
A82195M33 x 21 21/64"A$ 1056.86
B82195XM33 x 31 11/32"-
RFQ
A82196M33 x 3.51 11/32"A$ 1180.84
A82197M34 x 1.51 23/64"A$ 1238.92
A82198M36 x 1.51 7/16"A$ 1238.92
A82199M36 x 21 7/16"A$ 1108.84
A82200M36 x 31 29/64"A$ 1108.84
A82201M36 x 41 15/32"A$ 1238.92
A82205M39 x 31 9/16"A$ 1506.29
A82202M39 x 41 37/64"A$ 1353.13
A82206M42 x 31 11/16"A$ 1523.46
A82203M42 x 4.51 11/16"A$ 1523.46
B82207M45 x 21 51/64"-
RFQ
A82204M45 x 4.51 13/16"A$ 1826.88
C82209M48 x 31 15/16"A$ 2635.33
B82214M48 x 549.5mm-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A880137/8-1857/64"-
RFQ
A88001M10 x 113/32"A$ 17.12
A88003M12 x 1.2531/64"-
RFQ
A88006M14 x 1.259/16"-
RFQ
A88011M18 x 1.523/32"-
RFQ
CHRISLYNN -

Precision Professional Kits, NPT

StyleModelThread SizeDrill SizePrice (inc. GST)
A882191-11 1/2 NPT1 9/32"-
RFQ
A882161/2-14 NPT13/16"-
RFQ
B882121/4-18 NPT33/64"A$ 3890.91
A882101/8-27 NPT3/8"-
RFQ
A882183/4-14 NPT1 1/64"-
RFQ
A882143/8-18 NPT21/32"-
RFQ
CHRISLYNN -

Precision Kits, British Thread, BSW

StyleModelThread SizeDrill SizePrice (inc. GST)
A827351-8 BSW1 1/32"A$ 901.96
B827241/2-12 BSW33/64"A$ 289.83
C827161/4-20 BSW17/64"A$ 190.20
C827101/8-40 BSW#30A$ 193.09
B827313/4-10 BSW25/32"A$ 584.83
C827203/8-16 BSW25/64"A$ 215.85
C827123/16-24 BSW#8A$ 300.45
B827295/8-11 BSW21/32"A$ 396.51
C827185/16-18 BSW21/64"A$ 220.04
A827337/8-9 BSW29/32"A$ 682.61
C827227/16-14 BSW29/64"A$ 323.21
CHRISLYNN -

Precision British Thread Kits, BSF

StyleModelThread SizeDrill SizePrice (inc. GST)
A826361-10 BSF1 1/32"A$ 1201.92
B826261/2-16 BSF33/64"A$ 416.14
C826171/4-26 BSFGA$ 241.69
B826323/4-12 BSF49/64"A$ 680.26
C826213/8-20 BSF25/64"A$ 363.79
B826305/8-14 BSF41/64"A$ 694.48
C826195/16-22 BSF21/64"A$ 281.37
A826347/8-11 BSF57/64"A$ 1042.17
B826237/16-18 BSF29/64"A$ 394.30
CHRISLYNN -

Precision Kits, British Thread, BSP

StyleModelThread SizeDrill SizePrice (inc. GST)
A883171-11 BSP1 9/32"A$ 1998.62
A883131/2-14 BSP27/32"A$ 684.35
B883111/4-19 BSP17/32"A$ 414.66
C883101/8-28 BSP25/64"A$ 312.28
A883153/4-14 BSP1 1/16"A$ 1055.67
B883123/8-19 BSP21/32"A$ 535.57
A883145/8-14 BSP59/64"A$ 1004.80
A883167/8-14 BSP1 13/64"A$ 1903.99
StyleModelThread SizeMaterialPrice (inc. GST)
A879101/4-20 through 1/2-13Stainless Steel-
RFQ
A879001/4-20 through 3/8-16Stainless Steel-
RFQ
A879111/4-28 through 1/2-20Stainless Steel-
RFQ
A879011/4-28 through 3/8-24Stainless Steel-
RFQ
A879125/8-11 through 7/8-9Stainless Steel-
RFQ
A879135/8-18 through 7/8-14Stainless Steel-
RFQ
A879026-32 through 10-24Stainless Steel-
RFQ
A879036-40 through 10-32Stainless Steel-
RFQ
StyleModelThread SizePrice (inc. GST)
A87905M4 x 0.7 through M6 x 1-
RFQ
A87914M5 x 0.8 through M12 x 1.25-
RFQ
A87915M5 x 0.8 through M12 x 1.75-
RFQ
A87906M6 x 1 through M10 x 1-
RFQ
A87916M8 x 1 through M12 x 1.5-
RFQ
A87907M8 x 1.25 through M12 x 1.75-
RFQ
A87918M14 x 1.5 through M18 x 1.5-
RFQ
A87917M14 x 2 through M18 x 2-
RFQ
StyleModelPrice (inc. GST)
A87920A$ 3110.06
A87924A$ 3165.18
A87923A$ 3565.64
A87925A$ 3717.78
A87927A$ 3173.77
A87930A$ 3337.12
StyleModelThread SizeDrill SizePrice (inc. GST)
A689261/2-1337/64"-
RFQ
A689221/4-20Q-
RFQ
A689243/8-1629/64"-
RFQ
A689235/16-18X-
RFQ
A689257/16-1433/64"-
RFQ
A6892110-24I-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A699261/2-1337/64"-
RFQ
A699221/4-20Q-
RFQ
A699243/8-1629/64"-
RFQ
A699235/16-18X-
RFQ
A699257/16-1433/64"-
RFQ
A6992110-24I-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A689161 1/2-61 13/16"-
RFQ
A689141 1/4-71 9/16"-
RFQ
A689131 1/8-71 7/16"-
RFQ
A689111-81 5/16"-
RFQ
A689061/2-1345/64"-
RFQ
A689021/4-20X-
RFQ
A689093/4-101 1/16"-
RFQ
A689043/8-1633/64"-
RFQ
A689085/8-1153/64"-
RFQ
A689035/16-1829/64"-
RFQ
A689107/8-91 3/16"-
RFQ
A689057/16-1437/64"-
RFQ
A689008-32I-
RFQ
A689079/16-1245/64"-
RFQ
A6890110-24Q-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A699161 1/2-61 13/16"-
RFQ
A699141 1/4-71 9/16"-
RFQ
A699131 1/8-71 7/16"-
RFQ
A699111-81 5/16"-
RFQ
A699061/2-1345/64"-
RFQ
A699021/4-20X-
RFQ
A699093/4-101 1/16"-
RFQ
A699043/8-1633/64"-
RFQ
A699085/8-1153/64"-
RFQ
A699035/16-1829/64"-
RFQ
A699107/8-91 3/16"-
RFQ
A699057/16-1437/64"-
RFQ
A699008-32I-
RFQ
A699079/16-1245/64"-
RFQ
A6990110-24Q-
RFQ
StyleModelThread SizeDrill SizePrice (inc. GST)
A681261/2-2037/64"-
RFQ
A681221/4-28Q-
RFQ
A681243/8-2429/64"-
RFQ
A681235/16-24X-
RFQ
A681257/16-2033/64"-
RFQ
A6812110-32I-
RFQ

Helical Thread Insert Kits

Helical thread insert kits are used to install threaded fasteners in metals, polymers, wood & composites by repairing stripped / damaged tapped holes or creating threaded holes. They are ideal for preventing wear, corrosion and over-torque in automobile, aerospace and maintenance applications. Raptor Supplies offers thread insert kits from brands like AVK, Chrislynn, E-Z Lok, NES, Powercoil & Recoil. They provide more strength, versatility & productivity, as well as decreased downtime & maintenance costs than traditional threaded holes.

Features

  • Helical thread insert kits come with helical inserts, high-speed taps, drill bits, tang break-off tools and installation tools.
  • Most kits have a protective carry case / bag for a simplified storage solution.
  • Drill bits are available in various sizes and are attached to drills to create holes in work surfaces.
  • Taps are used to create threading inside drilled holes and provide a pathway for threaded inserts during installation.
  • These taps are usually made of high-speed steel for structural strength to resist bending / breaking under harsh usage.
  • Threaded inserts are available in 2 variants - free-running (helical) for reduced stress & material fatigue and key locking (alternatively, rock solid) for securing on soft materials.
  • Helical threaded inserts may have a tang / prong at the end of their wire coil body for ease of installation.
  • Some helical thread insert kits have tang removal tools to remove the tang and screw fasteners.
  • The inserts have steel, carbon steel, stainless steel or brass construction for strength, rigidity & corrosion resistance.
  • They are available in various thread sizes, such as UNC, UNF, BSW, BSF, BSP, NPT & Metric.
  • Chrislynn thread inserts kits contain free-running inserts having lengths up to twice the insert diameter.
  • Chrislynn rock solid thread inserts kits have a key locking design and a solid one-piece body.
  • Powercoil thread insert kits are made of stainless steel and come with or without a drill bit.

Frequently Asked Questions

Why is the diameter of some helical thread inserts larger than the tapped hole?

Many helical thread inserts have a slightly larger diameter than the required hole diameter. When the helical insert is being installed, its diameter decreases due to applied torque on the insert's prong / tang. However, once the threaded insert gets installed, it operates like a spring to expand outward into the material and provide strong anchoring.

What is the difference between helical and key locking thread inserts?

  • Helical inserts are free-running inserts that allow attachment with metal fasteners without using any coating or lubricant. They are ideal for particle-free environments and can expand after installation to secure themselves in the base material.
  • Key locking inserts form the strongest hold of all threaded inserts on soft metal surfaces using their distorted internal threads / locking keys that prevent slipping or rotating by driving into the surrounding material. They have superior strength owing to their solid, one-piece metal construction, unlike helical inserts that are made of coiled wire.

How to install a helical thread insert?

  • Select a drill bit according to the length of the insert / screw / bolt to drill out the damaged threading up to the required depth.
  • Use an appropriately sized tap to re-thread the drilled hole in the material.
  • Select a Helicoil thread insert and use the installation tool to wind the insert into the hole.
  • Use the tang break-off rod or punch to remove the tang / prong and allow free passage of the fastener. Large-sized holes or spark plug inserts require long-nose pliers to bend the tang in & out alternately until the tang breaks free.
  • The repaired threaded hole is now ready for fastening applications.

How to install a key-locking thread insert?

  • Drill a hole according to the required application.
  • Tap the drilled hole and wind the insert into the hole.
  • Drive the key into the material using the installation tool & hammer.

Can thread inserts be removed once installed?

Yes, some thread inserts can be removed using removal tools that attach to them & unwind them in the direction opposite to that used during installation. Key locking or rock solid inserts can be removed by bending the locking keys out of the material and using a winding tool to remove the insert out of the base material.

What is the difference between helical and key-locking thread inserts?

  • Helical inserts are free-running inserts that allow attachment with metal fasteners without using any coating or lubricant. They are ideal for particle-free environments and can expand after installation to secure themselves in the base material.
  • key locking thread inserts form the strongest hold of all threaded inserts on soft metal surfaces using their distorted internal threads / locking keys that prevent slipping or rotating by driving into the surrounding material. They have superior strength owing to their solid, one-piece metal construction, unlike helical inserts that are made of coiled wire.

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