3585-04ENPF168 - Screw Threaded Insert by Helicoil Stanley Engineered Fastening

The Heli-Coil 3585-04ENPF168 is a high-performance screw-locking wire thread insert featuring a specialized primer-free zinc chromate coating designed to streamline assembly while providing robust corrosion resistance. Precision-formed from cold-drawn 304 stainless steel wire with a uniform diamond cross-section, this tanged insert incorporates internal locking coils with straight chordal segments. As a mating male bolt is installed, these flat segments flex outward, exerting continuous prevailing torque to grip the fastener securely. This configuration delivers superior vibration resistance, preventing rotational backing-out under severe dynamic stress while eliminating the need for separate primer applications during installation and protecting soft host materials from internal thread stripping and wear.

Internal Screw-Locking Profile Deformed chordal coils apply continuous prevailing friction to lock mating hardware tightly against severe dynamic shock and operational vibration.

Primer-Free Zinc Chromate Coating Advanced surface treatment eliminates the need for liquid primers prior to assembly, accelerating production cycles and providing added corrosion protection.

Standard Driving Tang Built with an integrated drive tang on the leading coil to ensure positive tool engagement and precise placement depth.

304 Stainless Steel Construction Crafted from work-hardened, corrosion-resistant steel wire to establish a wear-proof thread foundation that shields soft alloys from stripping and galling.