1185-04CN336 - Helicoil ® Threaded Insert by Stanley ® Engineered Fastening

The Heli-Coil 1185-04CN336 is an extra-length, high-strength free-running wire thread insert designed to deliver deep thread engagement and permanent internal thread protection in soft parent materials. Precision-formed from cold-drawn 304 stainless steel wire with a uniform diamond cross-section, this tanged insert features a resilient helical structure that expands outward to seat firmly in tapped holes. Utilizing an unobstructed free-running design, it permits male fasteners to thread smoothly without added prevailing torque or rotational friction until final clamp load is applied. Its 3D nominal length maximizes load-bearing capacity and stress distribution, offering ultimate stripping protection, corrosion resistance, and joint fatigue strength in demanding applications.

Free-Running Dynamic Rotation Delivers an uninhibited thread path that allows standard male hardware to spin freely through the helical profile without added friction or torque resistance.

Integrated Drive Tang Built with a robust drive tang on the leading coil to provide positive tool engagement for controlled and accurate insertion depth setting.

304 Stainless Steel Construction Manufactured from work-hardened, corrosion-resistant steel wire to protect soft host materials against internal thread stripping, galling, and wear.

Maximized Load Distribution The extended length distributes tension across extra thread engagements, compensating for pitch and angle variances while dramatically boosting pull-out strength.