307 Hole-Type Inserts

307 Hole-Type Inserts: Heavy-Wall Threading Solution for Hard Metals & Composites

The 307 hole-type insert revolutionizes threading in challenging materials with its tri-flute cutting edges and reinforced heavy-wall design. Engineered with shallower yet sharper external threads, it overcomes machining limitations in superalloys, fiber-reinforced polymers, and hardened aluminum. Three precision-drilled flutes act as built-in cutting tools, enabling direct installation without secondary tapping operations.

Breakthrough Engineering Features

► STRUCTURAL INNOVATIONS:  

1.  Heavy-Wall Construction丨40% thicker than standard inserts丨**Shear load capacity +300%**  

2.  Low-Profile Sharp Threads丨Shallow-angle flank cuts through work-hardened surfaces丨**Zero galling risk**  

3.  Tri-Flute Geometry丨120° balanced cutting force distribution丨**Chip clearance optimization**  

4.  Cold-Forged Alloy Steel丨Rockwell C45-50 hardness丨**Abrasion resistance**  

Installation Mastery

☆ Material Prep:

Non-ferrous: Dry installation (no lubricant)

Steel/Ti: Apply molybdenum disulfide paste

☆ Drilling:

Hole Ø = Insert major Ø + 0.02mm (e.g., 8.02mm for M8)

☆ Driving:

Use impact-rated tri-lobe driver (2-4 N·m torque)

RPM: 100-400 (material-dependent)

Critical: Stop driving when insert shoulder contacts surface

Dominant Industry Applications

High-Tech Sectors                      Industrial Machinery

‌Aerospace turbine shrouds‌  ‌       Heavy-duty truck transmissions‌

‌Satellite antenna mounts‌  ‌          Wind turbine pitch bearings‌

‌EM-shielded electronics‌  ‌            Construction hydraulic rams‌

‌Armored vehicle optics‌ ‌              Ship engine valve blocks‌

‌High-speed train couplers‌  ‌        HVAC compressor assemblies‌

‌Lithium battery trays‌  ‌                Industrial robotics joints‌

Performance Validation: 

Exceeds ISO 14383 standards for thread pullout strength (22kN @ M10) and thermal cycling (-55°C to 175°C).