NAS1130-3L15D - Screw Threaded Insert by Helicoil Stanley Engineered Fastening

The Heli-Coil NAS1130-3L15D by Stanley Engineered Fastening is a high-performance, military-standard tangless screw-locking insert optimized for reinforcing or restoring coarse internal threads in low-strength parent materials. Meticulously cold-rolled from premium 304 stainless steel wire with a precision diamond-shaped cross-section, this wire thread insert compensates for pitch and angle variances to optimize joint load distribution. Designed with an advanced screw-locking configuration, it features a series of specialized straight segments or chords on one or more of the coils that apply a resilient, self-locking torque to the male fastener, preventing it from loosening under extreme vibration, impact, or thermal shock. Because it is completely tangless, this wire insert eliminates the time-consuming process of breaking off and retrieving installation tangs, providing an ideal, debris-free fastening solution that protects critical electronic and aerospace components against foreign object debris (FOD). Additionally, it features a high-grade dry film lubricant coating that significantly minimizes friction, galling, and wear during installation and operation to deliver a permanent, wear-resistant thread.

Tangless Design Provides permanent, high-strength internal threads while completely eliminating the traditional need for tang break-off and extraction, shielding sensitive equipment from foreign object debris (FOD).

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

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

Resilient Wire Construction Utilizes a continuous helically wound diamond profile that distributes stresses evenly across the tapped parent material to shield assemblies from thread stripping and wear.