HP2 - Hook Thread Stitching Pin
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Product Overview
Terox Pins provide a permanent mechanical repair solution for cracks in cast iron and aluminum components. Designed for professional engine rebuilders and machinists, these pins restore structural integrity without welding or heat distortion.
Product Specifications
Size: Pin has a diameter of 0.234"
Material: Steel/Aluminum
Recommended Taps: HP2ST, HP2BT
Recommended Drill Bit: P2DB
**Compare to Lock N Stitch C2 \ DO NOT USE WITH ORIGINAL LNS TOOLING**
Installation Overview
Terox Pins are installed by drilling overlapping holes along the crack line and inserting pins sequentially to mechanically lock the repair together. Once installed, the pins reinforce the casting and distribute stress across the repaired area.
Professional installation techniques are recommended for best results.
What We Manufacture
Precision Products
Mechanical Stitching Pins
Precision-machined stitching pins engineered for cast iron crack repair. Designed for maximum thread engagement and long-term holding strength in demanding shop environments.
100% STooling & Hardware
Complementary tooling systems designed to ensure proper installation control, alignment, and installation consistency across every repair application.
Cast Iron Repair Systems
Complete crack repair systems for engine blocks, cylinder heads, and other cast iron components — purpose-built to meet real-world shop expectations.
Thread Engagement Solutions
Systems are designed to maximize thread engagement during installation, ensuring the repair holds under thermal cycling, pressure, and mechanical stress.
Engine Block Applications
Repair solutions for cracked engine blocks across gasoline, diesel, and industrial applications — engineered for durability from day one.
Cylinder Head Repair
Targeted solutions for cylinder head crack repair, providing the same level of precision and reliability as our block repair systems.