HELICOIL® tangfree screwlock

It features the same advantages as HELICOIL® tangfree, but in addition, there is a screw-locking area. In combination with the corresponding installation tools, this thread insert is the perfect complement to our existing product range. High-strength joints are the result.

Your benefits:

• Profit maximisation
• Increased quality and value
• FOD (Foreign Object Damage) free design, no tang to break off

HELICOIL® Tangfree Screwlock has the same advantages as HELICOIL® Tangfree.
In addition, there is a screw-locking area. The screw is locked by one or several polygonal-shaped threads clamping the flanks of the screwed in screw. The elastically resilient frictional locking results in prevailing torques similar to the specifications of ISO 2320. These screw locking torques meet the demands of technical delivery terms regarding international standard specifications. HELICOIL®
Tangfree Screwlock can only be used with screws of higher property classes (8.8 and higher). Common lubricants according to the manufacturers’ recommendations shall be used for highly alloyed screws. This thread insert is widely used in the aviation industry.

The innovative production concept

The innovative coil of the insert allows installation from both ends with identical quality. Thanks to the reduced thread on both ends and to the inlet-optimised coil ends, the HELICOIL® tangfree thread insert can be installed without special alignment. The coil thread insert does not have a preferable end for installation. Therefore, the HELICOIL® tangfree does not need to be orientated for successful installation.

This ensures quick and safe installation. The HELICOIL® tangfree can be easily screwed onto the mandrel and smoothly enters the prepared tapped hole. During loading, the spring-mounted installation blade grips into the notch of the coil thread insert and securely installs it in the prepared tapped hole.

As a result of the optimised geometry of the HELICOIL® tangfree thread insert, tool wear is minimised. Tool blade life for HELICOIL® tangfree is longer and maintenance of the installation tools is easier than for the HELICOIL® tangless tool generation. Particularly the replacement of the tool blade has been optimised.