Inch Fine Thread Repair Kit - 1 1/2-12x2.250 HEL5528-24 - Heli Coil Products

Specifications

The Heli-Coil Products 5528-24 is an Inch Fine Thread Repair Kit, specifically designed for restoring 1 1/2-12 Unified Fine (UNF) threads. This comprehensive kit is suitable for repairing stripped or damaged tapped holes. The kit includes four high-quality 304 stainless steel inserts with a length of 2.250 inches (1.5 times the nominal diameter). It also contains a 1 17/32 inch drill bit, a high-speed steel tap, and a dedicated installation tool to facilitate a precise repair. The entire kit weighs 1 lb.

Key Features

• Precision Thread Repair: This kit provides a reliable method for repairing damaged inch fine threads, restoring them to their original size and condition.
• Durable Stainless Steel Inserts: Each kit includes 304 stainless steel inserts, known for their strength, corrosion resistance, and ability to create threads that are often stronger than the original.
• Complete Repair Solution: The kit contains essential tools—a drill bit, an STI (Screw Thread Insert) tap, and an installation tool—for efficient and effective thread restoration.
• Specific Thread Compatibility: Tailored for 1 1/2-12 UNF fine threads, ensuring compatibility with standard fasteners of that size.
• Permanent Repair: Heli-Coil inserts provide a permanent, wear-resistant sleeve within the tapped hole.

Applications

This Inch Fine Thread Repair Kit is widely used across various industries for restoring damaged internal screw threads.

• Automotive Industry: Ideal for repairing stripped spark plug holes, engine blocks, cylinder heads, transmission housings, and brake calipers.
• Industrial Machinery: Effectively maintains and repairs equipment by fixing worn or stripped threads in hydraulic systems and other critical components.
• Aerospace: Used for critical threaded connections in aircraft components, where thread integrity and strength are paramount.
• General Maintenance: Provides a solution for restoring threads in soft materials like aluminum, magnesium, cast iron, and plastics, which are prone to stripping or wear.

Benefits

• Cost-Effective Restoration: Repairing damaged threads with this kit is often more economical than replacing expensive components, minimizing downtime and saving costs.
• Enhanced Thread Strength: The stainless steel inserts create threads that are typically stronger and more durable than the original, resisting wear, corrosion, and vibration-induced loosening.
• Extended Component Lifespan: By restoring and reinforcing threads, the kit allows for the continued use of valuable parts, extending their operational life.
• Maintains Original Fastener Size: After installation, the repaired hole accepts standard 1 1/2-12 UNF fasteners, eliminating the need for oversized bolts.
• Reliable and Professional Results: Provides a secure, precise, and permanent thread repair solution, trusted by professionals and enthusiasts alike.