3585-3CN285 - Helicoil ® Threaded Insert by Stanley ® Engineered Fastening

The Heli-Coil® 3585-3CN285 is a screw-locking, tanged wire thread insert precision-engineered from 304 stainless steel. Designed to create strong, permanent #10-24 UNC threads in soft parent materials such as aluminum, magnesium, and structural composites, this insert features a series of resilient locking coils that exert strong radial pressure on the mating fastener to prevent rotational loosening from heavy vibration and impact. Its diamond-shaped helical structure provides exceptional corrosion resistance and wear protection, ensuring long-term joint integrity without requiring lock washers or wiring.

304 Stainless Steel Construction provides outstanding corrosion resistance, high tensile strength, and long-term joint reliability.

Screw-Locking Mechanism utilizes internal straight-segment locking coils to grip the mating bolt and resist vibration-induced loosening.

Integrated Drive Tang ensures quick and precise installation into standard tapped holes using tanged insertion tools.

#10-24 UNC Coarse Threading reinforces lightweight soft metals and repairs damaged internal threads in critical structural components.

1.5D Nominal Length Ratio optimizes thread engagement depth to maximize pull-out strength in compact joint spaces.