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Home>Helical Thread Inserts>Metric>Fine
Helical Inserts: M12 x 1, 18.0mm (1.5xD) Length, Free Running (6 pcs)
Part Number 83146
Helical Inserts: M12 x 1, 18.0mm (1.5xD) Length, Free Running (6 pcs)
Helical Thread Inserts: M12 x 1, 18.0mm (1.5xD) Length, Free Running, Package of 6
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Product Specs:
  • Internal Thread Size: M12 x 1
  • Length: 18.0mm (1.5x diameter)
  • Material: 18-8 (304) Stainless Steel
  • Type: Free Running
  • Tap Size: M12 x 1 STI
  • Package Quantity: 6 
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.

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 for 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.

Not the correct size? Looking for a different length?

For a comprehensive list of our available sizes and lengths, please visit our
Helical Thread Insert summary page.

  • Customer Reviews Average Rating review
    Owner/engine builder
    If you've ever gone searching for a M12x1.0 thread repair kit, you will likely have found ThreadToolSupply in the same way I did! I've used Recoil inserts for years, and they've never let me down, until I needed a kit for M12x1.0! Literally no one makes repair kits in this size! I stumbled onto Threadtoolsupply after searching Google, and what a find!! Great prices and service, quick and cheap shipping, you've got a customer for life!
    Reviewed by: 5523 Nick from Escondido CA. on 9/8/2017
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