Inch Coarse Thread Repair Kit - 1-1/8-7 x 1.688 - Heli Coil Products

The Heli-Coil 5521-18 Inch Coarse Thread Repair Kit offers a robust and reliable solution for restoring damaged or stripped 1-1/8-7 UNC threads in demanding automotive and industrial environments. This professional-grade kit provides everything needed to create permanent, corrosion-resistant internal threads that are often stronger than the original. Designed for professional technicians, it ensures durable repairs, extending the lifespan of critical components.

Key Features

• Professional-Grade Thread Repair: Includes a precision-engineered tap (Part No. 8187-18) and installation tool (Part No. 3724-18, Tool Type 2) for accurate and consistent thread restoration.
• Enhanced Thread Strength: Heli-Coil inserts are manufactured from strong, resilient materials, forming new threads that resist wear, corrosion, and seizing, often exceeding the strength of the parent material.
• Comprehensive Kit Contents: Each kit contains five high-quality thread inserts (Insert Package Part No. K1185-18), providing multiple repair capabilities for various projects.
• Durable and Reliable: Engineered to meet the rigorous demands of professional use, ensuring a long-lasting and secure repair for critical fastenings.

Applications

This thread repair kit is an indispensable tool for professional mechanics, industrial technicians, and maintenance personnel. It is ideally suited for repairing stripped or damaged threads in applications such as:

• Engine blocks and cylinder heads
• Transmission cases and housings
• Heavy machinery and industrial equipment
• Agricultural machinery
• Marine applications
• Any component requiring the reliable repair of 1-1/8-7 UNC coarse threads.

Specifications

• Thread Size: 1-1/8-7 UNC
• Nominal Insert Length: 1.688 inches
• Required Drill Size: 1-5/32" (Drill bit not included)
• Number of Inserts Per Kit: 5
• Tap Part No.: 8187-18
• Installation Tool Part No.: 3724-18
• Tool Type: 2
• Insert Package Part No.: K1185-18