1084-8CN160 - Helicoil ® Threaded Insert by Stanley ® Engineered Fastening

The Heli-Coil 1084-8CN160 by Stanley Engineered Fastening is a high-strength tanged free-running metric insert engineered to form permanent, high-integrity internal threads in lightweight parent metals like aluminum, magnesium, and zinc die-castings. Precision cold-rolled from high-grade 304 stainless steel wire with a uniform diamond-shaped cross-section, this wire thread insert automatically expands elastically outward upon installation to establish a secure, spring-like retention force without requiring keying or staking. Designed with an extended 2D length-to-diameter ratio, it maximizes thread engagement depth to distribute joint stress across a deeper area. Yielding a permanently wear-resistant thread, it shields metric M8 hardware configurations from thread stripping, galling, and structural failure under continuous operational fatigue.

Free-Running Profile Provides a clean, conventional internal thread track that allows standard metric mating bolts and screws to rotate completely unhindered without added friction or torque resistance.

Extended 2D Engagement Length Provides deeper load transfer in soft alloys, increasing tensile strength and pull-out resistance for critical joint connections.

Tanged Configuration Features a traditional driven installation tang that provides positive mechanical engagement with standard metric mandrels for controlled and highly accurate depth seating into tapped holes.

Resilient Wire Construction Utilizes a continuous helically wound diamond profile that handles thermal expansion and contraction elastically while safeguarding against thread stripping and wear.