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INSERT 1-1/2-12 - Heli Coil Products

Part #: K1191-24

The Heli-Coil K1191-24 INSERT 1-1/2-12 is a professional-grade thread repair insert engineered for restoring damaged or worn threads in critical automotive and industrial applications. Manufactured by Heli Coil Products, this 1-1/2"-12 free-running insert provides a robust and permanent solution for thread integrity. It effectively brings stripped threads back to their original dimensions, often creating a stronger assembly than the initial tapping.

Key Features

  • Thread Size: Designed for 1-1/2"-12 thread applications, ensuring compatibility with standard hardware.
  • Durable Construction: Crafted from high-tensile 304 stainless steel, offering exceptional strength, corrosion resistance, and extended service life.
  • Free-Running Design: Allows for smooth, unhindered fastener engagement, critical for reliable assembly and disassembly.
  • Permanent Thread Restoration: Repairs stripped, worn, or damaged threads, preventing future thread wear, seizing, and corrosion.
  • Enhanced Thread Strength: Creates threads that are often stronger than the original tapped hole, improving overall fastening reliability.
  • Tanged for Easy Installation: Features a tanged design for precise and efficient installation using standard Heli-Coil tools.

Applications

This Heli-Coil insert is indispensable for professional technicians and mechanics in a wide range of repair and maintenance scenarios. It is ideal for restoring damaged threads in engine blocks, transmissions, machinery housings, and other critical components across automotive, heavy equipment, and manufacturing sectors. The K1191-24 can be utilized in various materials including aluminum, magnesium, cast iron, and bronze, providing a versatile repair solution. It also serves to reinforce threads in original equipment manufacturing (OEM) for applications requiring superior thread strength and longevity.

Specifications

  • Manufacturer: Heli Coil Products
  • Model Number: K1191-24
  • Thread Size: 1-1/2"-12
  • Insert Length: 2 1/4" (2.2500" OAL)
  • Material: 304 Stainless Steel
  • Type: Free Running, Tanged
  • Hardness: Rockwell C43-C50
Only 6 left in stock - order soon

$32.62

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This product was added to our catalog on Tuesday 30 June, 2026.

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