Heli-coil 17551-02-5 Insert Tool Replacement Blades 2-56

Product Description

The HELI-COIL 17551-02-5 is a set of replacement blades for the HELI-COIL hand installation tool designed for tangless thread inserts in 2-56 UNC applications. These blades are the working contact component of the hand tool, engaging the insert during installation to drive it to the correct depth in the parent material. When blades wear or break during repeated use, this replacement set restores the tool to full function without requiring a complete tool purchase. Installation of thread inserts is common in aerospace, automotive, electronics, and precision manufacturing environments where stripped or weak threads in soft materials must be repaired or reinforced.

These replacement blades are sized for the 2-56 UNC thread standard, making them appropriate for small-fastener applications including electronics enclosures, instrument panels, and lightweight structural assemblies. The tangless insert design eliminates the need for a tang break-off step after installation, which simplifies the workflow and reduces the risk of leaving debris in blind holes. Trade technicians and production assemblers working with tangless HELI-COIL systems in fine-thread applications will find these blades a necessary service item for high-volume tool use.

Key Features

• Replacement blades for HELI-COIL hand installation tools - restores worn or damaged tools to service
• Compatible with tangless thread insert installation systems
• Sized for 2-56 UNC minimum thread applications
• Supports tangless insert workflow - no tang removal step required after installation
• Lightweight at 0.1 pounds - minimal addition to a field or bench tool kit

Compatibility

Designed for use with HELI-COIL hand installation tools configured for tangless inserts at the 2-56 UNC thread size.

Installation Notes

Blade replacement should be performed with the hand tool removed from service and fully at rest. Follow the tool manufacturer's disassembly procedure when swapping blades to avoid damage to the tool body or spindle components. No power source is required for hand tool service, but work should be done in a clean environment to prevent contamination of the blade seating area. Technicians should verify blade seating and tool function on a scrap insert before returning the tool to production use.