Heli-coil A1185-02CN215 2-56 Unc Free Running Insert

Product Description

The HELI-COIL A1185-02CN215 is a free running helical wire thread insert designed to install a strong, wear-resistant internal thread into tapped holes. Manufactured from 304 stainless steel with a bright, uncoated finish, this insert accepts a 2-56 UNC thread and measures 0.215 inches in overall length, representing a 2-1/2D length-to-diameter ratio. The tanged design allows installation with a standard HELI-COIL drive tool, after which the tang is broken off flush. Machinists, maintenance technicians, and assembly professionals install these inserts to restore stripped threads or to reinforce threaded holes in softer base materials.

This insert is used in precision assembly, maintenance and repair operations (MRO), and original equipment manufacturing where a 2-56 UNC threaded hole requires reinforcement or thread restoration. The 0.215-inch overall length suits thin-section and confined-space applications where longer inserts are not practical. The 304 stainless steel construction makes it appropriate for environments where corrosion resistance is a consideration. This insert is sold individually, though a minimum order quantity of 10 units applies.

Key Features

• 2-56 UNC thread size for fine-pitch small-fastener applications
• 304 stainless steel construction provides corrosion resistance and durability
• Bright, uncoated finish - no coating to affect thread tolerance stack-up
• Tanged design for positive engagement with a HELI-COIL installation tool
• 0.215-inch overall length with a 2-1/2D length-to-diameter ratio
• 9-5/8 free coils for consistent thread engagement across the insert length

Compatibility

Designed as an OEM-style free running insert for tapped holes requiring a 2-56 UNC internal thread. Suitable for use in aluminum, magnesium, cast iron, plastics, and other materials where thread reinforcement or repair is required.

Installation Notes

Installation requires a properly tapped hole sized for HELI-COIL inserts - standard drill and tap tables for free running inserts apply. Use the appropriate HELI-COIL installation tool matched to the 2-56 thread size to drive the insert to the correct depth. After installation, break off the tang using a tang break-off tool or needle-nose pliers; ensure no tang fragment remains in the hole before fastener assembly. Follow the equipment manufacturer's torque specifications for the mating fastener after insert installation.