3585-02CN129 - Helicoil ® Threaded Insert by Stanley ® Engineered Fastening

The Heli-Coil 3585-02CN129 is a high-performance screw-locking wire thread insert designed to engineer permanent, wear-resistant internal threads in thin or lower-strength host materials. Precision-formed from cold-drawn 304 stainless steel wire with a diamond-shaped cross-section, this tanged insert relies on a series of straight, resilient chordal segments on one or more internal coils. These flat segments flex outward when a male bolt is introduced, establishing a controlled, repeatable self-locking torque that completely eliminates the need for secondary lock-washers or wire-locking. It delivers exceptional vibration resistance, preventing localized hardware loosening under operational shock.

Internal Screw-Locking Resilient chordal coils exert a positive, continuous clamping force on the mating male bolt to maintain critical torque.

Tanged Configuration Features an integrated driving tang built into the leading coil for straightforward, accurate tool engagement during installation.

304 Stainless Steel Composition Work-hardened wire design provides robust protection against thread stripping, galling, and environmental erosion.

Reduces Component Weight Replaces bulky thread-locking hardware and specialized locking plates with a clean, lightweight internal design.