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MIDWEST FASTENER CORP

MIDWEST FASTENER CORP 76862 Helical Insert M14-1.25 Steel 6 PK

SKU CH-R6K5-H1WEJ

M14-1.25 helical inserts repair stripped threads in softer materials, six per pack

  • TypeThreaded Inserts
  • M14-1.25 thread size restores stripped holes in aluminium
  • Steel construction resists wear in high-torque applications
  • Six inserts per pack cover multiple repair jobs
  • Helical coil design distributes load across full thread depth
  • Installs with standard tap tools for quick field repairs

M14-1.25 Steel Helical Insert 6 Pack

This six-pack supplies M14-1.25 helical inserts machined from steel for thread repair and reinforcement. Mechanics and fabricators use them to restore stripped holes or to create durable threads in softer base materials. Each insert installs into a prepared hole to provide a permanent, wear-resistant female thread. The kit suits professional workshops and serious DIYers who need reliable thread restoration.

For thread repair in steel, aluminium and cast parts

The inserts suit anyone fixing damaged M14-1.25 threads or adding strong threads to low-strength parent metal. They are not for metric sizes other than M14-1.25, nor for inch-series holes, nor for applications that require a locking or self-tapping insert style. Buyers needing different diameters, pitches, or insert types should look at other listings.

M14-1.25 thread size and 1.25 mm pitch

The single specification that decides fit is the M14-1.25 designation, meaning a 14 mm major diameter with a 1.25 mm thread pitch. Only holes tapped to this exact size and pitch will accept these inserts. Verify the damaged hole matches M14-1.25 before ordering.

Highlights

  • M14-1.25 thread size restores stripped holes in aluminium
  • Steel construction resists wear in high-torque applications
  • Six inserts per pack cover multiple repair jobs
  • Helical coil design distributes load across full thread depth
  • Installs with standard tap tools for quick field repairs

Specifications

BrandMIDWEST FASTENER
TypeThreaded Inserts

Questions about this item

Will the M14-1.25 thread size match the original bolt holes in my older engine block?

The insert uses a standard M14 diameter with a 1.25 mm pitch, which is a common thread specification for many engine applications and should match existing holes of that size.

How can I verify the helical insert is seated correctly after installation?

After driving the insert in with the proper tool, the top coil should sit slightly below the surface and a correctly sized bolt should thread in smoothly for the full depth without binding.

Does the 6-pack include the installation tool or must I buy it separately?

The package contains six steel helical inserts only; the specific tap and driver tool required for M14-1.25 installation is sold separately.

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