Product Description
The Heli-Coil NAS1130-04L15D (Heli-Coil Part Number: T3585-04C168) is a aerospace-grade screw-locking tangless wire thread insert engineered to prevent foreign object damage (FOD) while securing male fasteners against extreme dynamic vibration. Precision-formed from cold-drawn 304 stainless steel wire with a diamond cross-section, this tangless insert features internal locking coils with series of straight chordal segments that exert continuous prevailing torque onto mating threads. The advanced tangless design incorporates drive notches at both ends of the coil, enabling bi-directional installation without tang breakage or retrieval operations. Pre-coated with a specialized dry film lubricant, it stabilizes assembly friction while providing superior stripping protection and joint fatigue strength in critical defense, aviation, and industrial applications.
Internal Screw-Locking Profile Series of chordal locking coils apply continuous prevailing friction to hold mating hardware securely 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.
Product Specs
- SKU:
- NAS1130-04L15D
- Thread Size (Inch):
- 0.112
- Thread:
- #4-40 UNC
- Overall Insert Length (Decimal Inch):
- 0.168
- Tang:
- Tangless
- Material:
- 304 Stainless Steel (CRES)
- Number of Free Coils:
- 5-1/2
- Length to Diameter Ratio:
- 1.5:1 (1.5D Nominal Length)
- Coating/Finish:
- Dry Film Lubricant
