NAS1130-06L20D - Screw Threaded Insert by Helicoil Stanley Engineered Fastening

The Heli-Coil NAS1130-06L20D (Heli-Coil Part Number: T3585-06C276) is an extra-length, military-standard screw-locking tangless wire thread insert engineered to prevent foreign object damage (FOD) while securing male fasteners against extreme dynamic vibration. Precision-formed from high-tensile, cold-drawn 304 stainless steel wire with a diamond-shaped cross-section, this tangless insert features internal locking coils with straight chordal segments that exert continuous prevailing torque onto mating threads. The advanced tangless profile incorporates drive notches at both ends, enabling bi-directional installation without tang break-off or removal operations. Pre-coated with a factory-applied dry film lubricant, it stabilizes assembly friction while providing maximum stripping protection, deep thread engagement, and long-term joint fatigue strength in critical defense and aerospace applications.

Internal Screw-Locking Profile Series of chordal locking coils apply continuous prevailing friction to hold mating hardware firmly against heavy operational shock and dynamic vibration.

Tangless Foreign Object Damage (FOD) Prevention Replaces break-off tangs with drive notches at both ends, eliminating metallic debris risks and tang removal labor in sensitive components.

Bi-Directional Fast Installation Reversible profile allows non-destructive installation or removal from either direction without needing to orient or index the insert.

Dry Film Lubricant Coating Factory-applied dry film lubrication lowers installation torque, prevents thread galling, and ensures consistent clamping force across thermal cycles.