NAS1130-04L10DSF - Screw Threaded Insert by Helicoil Stanley Engineered Fastening

The Heli-Coil® Tangless® Screw-Locking Insert (Part Number: NAS1130-04L10DSF) provides ultimate structural thread reinforcement and advanced vibration resistance for critical high-performance assemblies. Engineered with a specialized tangless architecture, this precision-formed wire component eliminates the risk of foreign object debris (FOD) by removing the traditional installation steps of breaking off and retrieving metal tangs. The internal profile features a series of straight chordal segments that exert a continuous, self-locking prevailing torque on the mating male fastener to prevent rotational loosening under severe cyclic shocks. Crafted from premium 304 stainless steel, this insert distributes load stresses evenly, preventing thread stripping and galling in low-strength parent materials.

Tangless Configuration Design Completely eliminates the physical drive tang to streamline manufacturing throughput and remove the manual labor required for tang extraction.

Absolute FOD Mitigation Ensures that zero residual metal particles or fractured tang fragments enter closed, sensitive internal cavities or electronics boxes.

Internal Screw-Locking Mechanism Utilizes resilient chordal flat coils that flex outward to apply constant clamping friction against severe operational vibration.

Dry Film Lubricant Coating Pre-applied finish that stabilizes torque-tension relationships, prevents friction-induced thread wear, and ensures uniform seating dynamics.