Product Description
The Heli-Coil NAS1130-04-20 by Stanley Engineered Fastening is a high-strength, military-standard tangless free-running insert optimized for reinforcing or restoring fine internal threads in lightweight parent materials. Cold-rolled from premium 304 stainless steel wire with a uniform diamond-shaped cross-section, this wire thread insert automatically expands outward upon installation to anchor itself securely without localized stress concentrations. Because it is completely tangless, this insert completely eliminates the step of breaking off and retrieving installation tangs, providing a debris-free fastening solution that protects sensitive aerospace and electronic components against foreign object debris (FOD). The result is a permanently wear-resistant thread that shields high-stress joints from stripping, galling, and structural erosion.
Tangless Design Provides permanent, high-strength internal threads while completely eliminating the traditional need for tang break-off and extraction, shielding sensitive equipment from foreign object debris (FOD).
Free-Running Profile Delivers a clean, conventional internal thread that allows standard bolts and fasteners to turn freely through the precision-formed profile without added resistance.
High Material Adaptability Automatically expands outward upon installation to anchor itself permanently, providing wear-resistant threads that dynamically adapt to material expansion and contraction.
Resilient Wire Construction Utilizes a continuous helically wound diamond profile that distributes stresses evenly across the tapped parent material to shield assemblies from thread stripping and wear.
Product Specs
- SKU:
- NAS1130-04-20
- Thread Size (Inch):
- 1/4-28 (0.250)
- Thread:
- UNF (Fine)
- Overall Insert Length (Decimal Inch):
- 0.500 in
- Tang:
- Tangless
- Material:
- 304 Stainless Steel
- Number of Free Coils:
- 11.6
- Length to Diameter Ratio:
- 2D (2 x Diameter)
- Coating/Finish:
- Plain (None)
