Product Description
The Heli-Coil® 1185-4CN625 is a tangless, free-running wire thread insert precision-manufactured from 304 stainless steel. Engineered to form permanent, high-strength 1/4-20 UNC internal threads in low-density parent metals such as aluminum and magnesium, this insert provides outstanding corrosion resistance and long-lasting wear protection. Featuring an advanced tangless design, it completely eliminates tang break-off and retrieval steps, accelerating production workflows while eliminating foreign object debris (FOD) risks in critical structural assemblies.
Tangless Wire Construction eliminates tang removal and vacuum retrieval steps, shortening assembly cycles and completely preventing foreign object debris (FOD) hazards.
304 Stainless Steel Material delivers superior tensile strength, wear resistance, and long-lasting protection against corrosion.
Free-Running Thread Profile permits standard male fasteners to thread smoothly through the coil without applying friction locking torque.
1/4-20 UNC Coarse Threading reinforces soft parent materials and protects tapped holes against thread stripping and galling under load.
2.5D Nominal Length Ratio maximizes engagement depth to provide exceptional pull-out strength in structural joints.
Product Specs
- SKU:
- 1185-4CN625
- Thread Size (Inch):
- 1/4-20
- Thread:
- UNC
- Overall Insert Length (Decimal Inch):
- 0.625
- Tang:
- Tangless
- Material:
- 304 Stainless Steel
- Number of Free Coils:
- 10-1/2
- Length to Diameter Ratio:
- 2.5:1
