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M18 x 2.5 Helical Insert (1.5xD), Drill Bit, STI Plug Tap & Installation Tool
M18 x 2.5 Helical Insert (1.5xD), Drill Bit, STI Plug Tap & Installation Tool

M18 x 2.5 Complete Helical Thread Repair Kit (1.5xD)

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Your Price: $133.18
Our Complete Internal Thread Repair Kit includes HSS Drill Bit, HSS STI Plug Tap, Helical Insert & Installation Tool
Part Number: 82178H
The only kit you'll need for internal thread repair!
Our complete thread repair kit includes:
  • HSS Drill Bit
  • HSS STI Plug Tap
  • Helical Inserts
    • 6 pcs. of 1.5xD Length
  • Installation Tool
Helical Insert Specs:
  • Internal Thread Size: M18 x 2.5
  • Length: 27.0mm (1.5xD)
  • Material: 18-8 (304) Stainless Steel
  • Type: Free Running
  • Tap Size: M18 x 2.5 STI
  • Drill Size: 47/64"
Quickly and easily repair stripped or damaged threads, or create stronger original threads in die castings or plastics with our Helical Screw Thread Inserts.  Coil tension securely holds the insert in place without undue tension on the surrounding material.  The inserts are vibration and impact resistant.  Made from corrosion resistant stainless steel, they offer a wide temperature tolerance.

Helical Inserts are often known by the brand names Helicoil or Recoil Screw Thread Inserts.  Our Precision Thread Helical Inserts are interchangeable with other brands of inserts and tooling.  If you are currently using Helicoil, Recoil, or Mil Spec part numbers for your inserts, please see our Cross Reference Numbers below for an easy and accurate transition to our Precision Thread Helical Inserts from Chrislynn.

Cross Reference: Helical Insert, M18 x 2.5, 27.0mm (1.5xD) Length, Free Running
  • Chrislynn P/N: 82178H
  • Helicoil P/N: 1084-18CN-270
  • Recoil P/N: 05183
  • Mil-Spec P/N: MA3279-171
Available Modifications to our Helical Inserts...
  • Material - Inconel X750, Phosphor-Bronze, Nitronic 60, 316 Stainless Steel
  • Coatings - Dry Film, Cadmium, Silver Plating
  • Please call for quote & lead time when requiring any modifications
Our Precision Thread Helical Inserts meet or exceed most applicable specifications, including: MS 122076 series, 124651 series, 21208, 21209, 33537, Mil-1-8846, and Mil-F-5577.

Need a different size or length? Just want the inserts? 

For a comprehensive list of our available kits, inserts, and tools - please visit our Helical Thread Insert summary page.

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