Heli-coil 17552-4-5 Insert Tool Replacement Blades 1/4-28 Unf

Product Description

The HELI-COIL 17552-4-5 is a set of replacement blades designed for hand installation tools used with Tangless thread inserts. Tangless inserts do not require a tang break-off step after installation, and these blades are matched to that system. The blades service hand installation tools sized for 1/4-28 UNF threads. They are a consumable replacement component - when blades on an existing installation tool show wear that affects insert drive performance, these blades restore the tool to working condition. Installation technicians in HVAC, automotive, aerospace maintenance, and general manufacturing use Tangless insert systems to repair or establish threaded holes in metal components.

These replacement blades apply wherever a HELI-COIL Tangless hand installation tool for 1/4-28 UNF thread size is in service. Typical applications include thread repair on equipment housings, compressor bodies, valve assemblies, and structural components where a 1/4-28 UNF thread insert is required. They are suited for shop or field use by mechanics, HVAC technicians, and maintenance professionals who maintain a thread repair kit in their tool inventory.

Key Features

• Replacement blades for Tangless thread insert hand installation tools - no full tool replacement needed
• Sized for 1/4-28 UNF thread inserts
• Compatible with Tangless insert style, eliminating the tang removal step during installation
• Lightweight at 0.1 pounds - easy to stock as a consumable spare
• Sold individually, allowing single-blade restocking without a full kit purchase

Compatibility

Designed for use with HELI-COIL Tangless hand installation tools sized for 1/4-28 UNF thread inserts. Verify that your existing tool handle accepts this blade style before ordering.

Installation Notes

Blade replacement on a hand installation tool is a bench task performed by a mechanic or technician. Ensure the tool is fully disengaged from any workpiece and the work area is clear before swapping blades. Follow the tool manufacturer's blade replacement procedure - improper seating can cause insert misalignment during installation. Tangless insert tools and blades do not require tang removal steps, but proper blade condition is critical to consistent insert drive torque.