Heli-coil A1084-5CN100 Free Running Insert M5 X 0.8

Product Description

The HELI-COIL A1084-5CN100 is a free running helical wire threaded insert designed to create durable, wear-resistant internal threads in a range of base materials. With an M5 x 0.8 metric coarse thread profile and an overall length of 0.394 inches (10.0 mm), this tanged insert delivers a 2D length-to-diameter ratio suited to standard depth applications. Constructed from 304 stainless steel with a bright, uncoated finish, it resists corrosion and maintains thread integrity under repeated fastener cycling. Machinists, maintenance technicians, and assembly professionals install this type of insert to restore stripped threads or establish new threaded holes in softer or high-wear materials.

This insert is used in both original equipment manufacturing and field repair contexts where reliable metric thread engagement is required. The tanged design allows installation with a standard HELI-COIL driver tool; the tang is broken off after installation to complete the insert seat. Typical applications include thread repair in aluminum housings, steel components, and other materials where direct tapping would not provide sufficient holding strength or thread longevity. The M5 x 0.8 metric coarse specification makes it suitable for a wide range of light mechanical assemblies and equipment maintenance tasks.

Key Features

• M5 x 0.8 metric coarse thread for broad fastener compatibility
• 10.0 mm overall length providing a 2D length-to-diameter ratio
• Tanged design for controlled installation with a driver tool
• 304 stainless steel construction for corrosion resistance
• Bright, uncoated finish - no surface treatment to interfere with thread fit
• 9-5/8 free coils for consistent thread engagement across the insert length

Compatibility

Designed as an OEM-style free running threaded insert for use in any application requiring an M5 x 0.8 metric coarse internal thread, including thread repair and new thread installation in metals and other machinable materials.

Installation Notes

Installation is performed by machinists or maintenance technicians using the appropriate HELI-COIL tap and installation driver sized for M5 x 0.8. The receiving hole must be drilled and tapped to the correct HELI-COIL tap size before the insert is driven in. After seating the insert flush with or slightly below the surface, break off the installation tang using a tang break-off tool. Always ensure the host material is securely fixtured and the hole is free of chips and debris before installing the insert.