Heli-coil A4184-5CNW075 Screw-locking Insert M5 X 0.80

Product Description

The HELI-COIL A4184-5CNW075 is a tanged, screw-locking wire thread insert designed to create a secure, vibration-resistant internal thread in a parent material. Manufactured from Grade 304 stainless steel with a dry film lubricant finish, this insert accepts an M5 x 0.80 metric coarse thread and provides a length-to-diameter ratio of 1-1/2D. The overall installed length is 7.5 mm. The locking feature is achieved through a deformed coil section that generates controlled resistance against fastener back-out, making it suited for applications subject to shock, vibration, or cyclic loading. Installation requires a standard Heli-Coil tap and installation tool for M5 inserts.

This insert is used in repair and original-assembly applications across industrial, mechanical, and precision manufacturing environments. It is appropriate wherever an M5 internal thread must be reinforced, repaired, or installed in a material too soft or too thin to hold a standard thread reliably. The tanged design requires tang break-off after installation using the appropriate notching tool. Typical installers include machinist technicians, maintenance mechanics, and field service technicians working on metal assemblies requiring thread integrity under dynamic loads.

Key Features

• Screw-locking design with a deformed coil section resists fastener back-out under vibration
• Grade 304 stainless steel construction provides corrosion resistance in demanding environments
• Dry film lubricant finish aids installation and reduces galling during thread engagement
• M5 x 0.80 metric coarse thread profile with 1-1/2D length-to-diameter ratio
• Maximum locking torque of 1.60 N/m and minimum break-away torque of 0.30 N/m
• Tanged insert style compatible with standard Heli-Coil installation tooling for M5

Compatibility

Designed for use in any parent material tapped with the corresponding Heli-Coil STI (Screw Thread Insert) tap for M5 x 0.80 metric coarse threads. Verify parent material minimum wall thickness and hole depth before installation.

Installation Notes

Installation must be performed using the correct STI tap, insertion tool, and tang break-off tool sized for M5 x 0.80. Ensure the tapped hole is clean and free of chips before inserting. Drive the insert to the specified depth so the top coil sits flush or one half turn below the parent material surface. After seating, break off the installation tang using the appropriate tool and remove the tang fragment from the bore before assembly.