NAS1130-4FL15D - Screw Threaded Insert by Helicoil Stanley Engineered Fastening

The Heli-Coil NAS1130-4FL15D by Stanley Engineered Fastening is a military-specification tangless screw-locking insert engineered to establish durable, high-strength internal threads in soft parent metals like aluminum and magnesium. Precision cold-rolled from high-grade 304 stainless steel wire with a diamond-shaped 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 installation friction and safeguards fine 1/4-28 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.

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

Military Specification Certified Manufactured to strict NAS1130 standards, guaranteeing consistent performance and dimensional accuracy in mission-critical hardware assemblies.

NASM - Products meet Military Specifications (MS) and National Aerospace Standards (NAS) requirements as applicable and are shipped with appropriate documentation.