Heli-coil A4184-5CN050 Screw-locking Insert M5 X 0.80

Product Description

The HELI-COIL A4184-5CN050 is a tangless screw-locking wire thread insert designed to create durable, vibration-resistant threaded connections in parent material bores. Manufactured from Grade 304 stainless steel with a bright finish, it accepts an M5 x 0.80 metric coarse thread and installs to a 1D length ratio with an overall installed length of 5.00 mm. The locking feature is achieved through a section of coils that apply a controlled interference fit on the mating fastener, delivering a maximum locking torque of 1.60 N/m and a minimum breakaway torque of 0.30 N/m. Machinists, maintenance technicians, and assembly professionals install these inserts to repair damaged threads or reinforce threads in softer base materials.

This insert is suited for precision thread repair and original equipment assembly in aerospace, automotive, industrial, and general manufacturing applications. The tangless design eliminates the need for tang removal after installation, making it appropriate for blind-hole applications and assemblies where loose tangs cannot be tolerated. The 304 stainless steel construction provides corrosion resistance in moderate service environments.

Key Features

• Tangless design eliminates post-installation tang removal, suitable for blind-hole applications
• Grade 304 stainless steel construction provides corrosion resistance
• M5 x 0.80 metric coarse thread, 1D length ratio, 5.00 mm overall insert length
• Maximum locking torque of 1.60 N/m with minimum breakaway torque of 0.30 N/m
• Outside diameter range of 6.25 mm to 6.80 mm for consistent bore fit
• Bright finish with 4-1/8 free coils for controlled thread engagement

Compatibility

Designed as an OEM-style replacement or thread repair solution for applications requiring an M5 x 0.80 metric coarse threaded insert with a 1D length-to-diameter ratio in parent material bores sized for a 6.25 mm to 6.80 mm outside diameter.

Installation Notes

Installation requires a properly sized HELI-COIL tap to prepare the parent bore and a compatible tangless insert tool matched to the M5 thread size. Power down or de-energize any associated equipment before performing thread repair in assembled components. Follow the insert manufacturer installation tooling specifications to achieve proper seating depth and avoid over-driving the insert. Consult applicable industry standards for torque requirements on the final fastener assembly.