Heli-coil A3585-02CNPF086 Screw-locking Insert 2-56 Unc

Product Description

The HELI-COIL A3585-02CNPF086 is a tangless, screw-locking helical coil insert designed to create strong, vibration-resistant threads in tapped holes. Manufactured from Grade 304 stainless steel with a primer-free finish, this insert accepts a 2-56 UNC thread and features a 1D length-to-diameter ratio with an overall length of 0.086 inches. Three free coils provide the locking action, delivering a maximum locking torque of 20 oz-in and a minimum break-away torque of 3.00 oz-in. The tangless design eliminates the need for tang removal after installation, saving time and reducing debris in critical assemblies.

This insert is suited for applications requiring reliable thread repair or thread reinforcement in soft or brittle base materials such as aluminum, magnesium, and plastics. The 2-56 UNC sizing targets small-fastener assemblies common in precision instrumentation, electronics enclosures, and light mechanical assemblies. Installation is performed by technicians and assemblers working in aerospace, electronics manufacturing, and general industrial maintenance environments where thread integrity and torque retention are critical.

Key Features

• Tangless design eliminates post-installation tang removal and reduces assembly debris
• Grade 304 stainless steel construction for corrosion resistance in demanding environments
• Maximum locking torque of 20 oz-in with minimum break-away torque of 3.00 oz-in
• Primer-free finish for clean installation without additional prep
• 1D length-to-diameter ratio with 0.086-inch overall length suits tight-clearance assemblies
• Three free coils deliver consistent thread-locking performance

Compatibility

Designed as an OEM-style screw-locking insert for 2-56 UNC tapped holes in base materials requiring thread reinforcement or repair.

Installation Notes

Install using the appropriate tangless installation tool sized for 2-56 UNC inserts. Ensure the tapped hole meets the required STI (Screw Thread Insert) specification before installation. Power down or de-energize any assembly before servicing threaded connections in electrical or electronic enclosures. Do not exceed recommended installation torque values specified in the applicable assembly documentation.