NAS1130-04L15DSF - Screw Threaded Insert by Helicoil Stanley Engineered Fastening

The Heli-Coil NAS1130-04L15DSF by Stanley Engineered Fastening is a military-standard tangless screw-locking insert engineered to provide high-strength internal threads in lightweight parent materials. 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. Because it is completely tangless, it completely eliminates the process of breaking off, retrieving, and counting installation tangs, providing a crucial foreign object debris (FOD) free assembly environment. Designed for automated production lines, the insert features a strip-feed packaging layout on a continuous plastic carrier strip for high-speed installation, and it is finished with a durable dry film lubricant coating that effectively prevents thread friction, galling, and premature wear.

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.

Strip-Feed Packaging Aligns wire thread inserts on a continuous plastic carrier strip to drastically accelerate assembly throughput when integrated with power installation tooling.

Dry Film Lubricant Greatly reduces friction during installation and prevents thread binding, galling, and wear under heavy cyclic loads.