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Professional Thread Repair Kit: 3/4-14 BSP, 1.125" (1.5xD) Length
Part Number 88315
Professional Thread Repair Kit: 3/4-14 BSP, 1.125" (1.5xD) Length
Helical Thread Repair Kit: 3/4-14 BSP, 1.125" (1.5xD) Length
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Our most popular kits for internal thread repair!
The kit includes:
  • HSS STI Plug Tap
  • Helical Inserts - 4 pcs.
  • Installation Tool
Helical Insert Specs:
  • Internal Thread Size: 3/4-14 BSP
  • Length: 1.125" (1.5x diameter)
  • Material: 18-8 (304) Stainless Steel
  • Type: Free Running
  • Tap Size: 3/4-14 BSP STI
  • Drill Size: 1 1/64" (not included in kit, sold separately)
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 so won't strip or seize.  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.  Rest assured you'll enjoy 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 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.
  • Customer Reviews Average Rating review
    Sr. Man. Engineer
    This kit was a lifesaver on a critical piece of equipment that had the lube drain hole threads stripped out in. Simple to use and dried up leak first try and equipment still operating with no leak issues. Great product with and also friendly customer service. Good experience all the way around. SK
    Reviewed by: Scott K. from Belton, SC. on 8/14/2015
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