1185-04EN280 by HELI-COIL

The Heli-Coil 1185-04EN280 by Stanley Engineered Fastening is a high-performance tanged free-running insert engineered to form durable, high-strength internal threads in soft parent materials such as aluminum, magnesium, and zinc die-castings. Precision cold-rolled from high-grade Nitronic 60 stainless steel wire with a 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. Nitronic 60 provides superior inherent resistance to thread galling and friction wear, eliminating the need for additional anti-seize lubricants when paired with stainless steel fasteners. Designed with an extended 2.5D length-to-diameter ratio, it maximizes engagement depth to yield a permanently wear-resistant thread that protects fine #4-40 hardware assemblies from stripping and stress fatigue.

Free-Running Profile Provides a smooth, conventional internal thread track that allows standard mating coarse bolts and screws to turn unhindered without added friction or torque resistance.

Nitronic 60 Construction Offers superior inherent anti-galling performance and wear resistance, making it ideal for high-temperature or vacuum environments without extra coatings.

Extended 2.5D Engagement Length Maximize load transfer depth in low-density parent metals, significantly boosting pull-out strength and joint integrity.

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