NAS1130-3L15DSF - Screw Threaded Insert by Helicoil Stanley Engineered Fastening

The Heli-Coil NAS1130-3L15DSF by Stanley Engineered Fastening is a military-standard tangless screw-locking insert provided in a strip-feed format for high-volume automated manufacturing lines. Precision cold-rolled from high-grade 304 stainless steel wire with a uniform diamond cross-section, this wire thread insert features a tangless bi-directional design that completely eliminates installation tangs, eradicating foreign object debris (FOD) risks in critical aerospace and electronics assemblies. Its advanced screw-locking configuration incorporates a series of straight chord segments on the internal coils that exert a resilient, self-locking torque on male fasteners. Treated with a specialized dry film lubricant, it reduces friction during high-speed installation and safeguards fine #10-32 hardware joints against rotational loosening, galling, and thread wear under severe vibration.

Tangless Bi-Directional Design Eliminates installation tangs to prevent foreign object debris (FOD) issues, enabling rapid installation and non-destructive adjustment from either end.

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 Format Supplied on continuous strips to optimize production throughput and support automated high-speed installation equipment.

Dry Film Lubricant Coating Provides a protective, low-friction surface finish that reduces seating torque and prevents thread galling during fastener installation.