NAS1130-04L15 - Screw Threaded Insert by Helicoil Stanley Engineered Fastening

The Heli-Coil NAS1130-04L15 by Stanley Engineered Fastening is a military-standard tangless screw-locking insert engineered to provide durable, high-strength internal threads in lightweight parent materials like aluminum and magnesium. Cold-rolled from premium 304 stainless steel wire with a uniform diamond-shaped cross-section, this wire thread insert automatically adapts to pitch and angle variances for optimized joint load distribution. Its advanced screw-locking configuration incorporates a series of straight chord segments on the internal coils that exert a resilient self-locking torque on the male fastener, preventing loosening caused by severe shock and vibration without requiring lock-washers. Because it is completely tangless, this insert eliminates the process of breaking off, retrieving, and counting installation tangs, providing a certified foreign object debris (FOD) free assembly environment.

Tangless Design Provides robust, permanent internal threading while removing the traditional need for tang break-off and extraction, successfully shielding critical assemblies from foreign object debris (FOD).

Screw-Locking Mechanism Grips the male bolt or screw with a series of specialized straight segments on the internal coils, ensuring a secure, vibration-proof joint without requiring lock-washers or auxiliary locking devices.

High Structural Integrity Compensates for pitch and angle variances within tapped parent metals, dispersing concentrated joint loads evenly to elevate overall assembly fatigue life.

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