1185-4EN375 - Screw Threaded Insert by Helicoil Stanley Engineered Fastening

The Heli-Coil 1185-4EN375 by Stanley Engineered Fastening is a high-performance tanged free-running insert designed to generate high-strength, permanent internal threads in low-density parent materials like aluminum and magnesium alloys. Precision cold-rolled from high-performance Nitronic 60 stainless steel wire with a distinctive diamond-shaped cross-section, this wire thread insert automatically expands elastically outward upon installation to establish a secure, spring-like retention force without requiring keying, staking, or swaging. Its specialized material composition delivers outstanding anti-galling protection, completely eliminating the need for additional anti-seize lubricants when using stainless steel screws. This insert yields a permanently wear-resistant thread that optimizes joint load distribution, shielding critical industrial, electronic, and vacuum-environment assemblies against stripping and structural erosion.

Free-Running Profile Provides a smooth, conventional internal thread track that allows standard mating bolts to rotate unhindered without added locking friction.

Nitronic 60 Composition Offers superior inherent anti-galling performance and wear resistance, making it perfect for vacuum applications and eliminating the need for extra coatings or lubrication.

Tanged Configuration Features a traditional driven installation tang that provides positive mechanical engagement with standard mandrels for highly accurate depth seating.

Flexible Coil Structure Automatically adapts to material expansion and contraction, minimizing localized stress concentrations to increase the overall fatigue life of the parent material.