The kit contains inserts, the proper size drill, high speed steel Heli-Coil tap and an installation tool. Larger in diameter than the tapped hole, the insert is compressed during installation to ensure maximum surface contact between the flanks of the wire insert and tapped threads. x the diameter of the insert in length which is the industry standard eg 8mm insert would be 12mm long.

The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products.These VCOIL kits include the correct size drill to prepare for tapping up to M12 (1/2") Check that the thread and pitch of the tap and the bolt match. This wire is then wound into a spiral coil which when installed into Heli-Coil tapped holes, provides permanent conventional 60° internal screw threads. During installation the inserting tool applies torque to the tang reducing the diameter of the leading coil permitting it to enter the tapped thread.

Recognised and trusted throughout the UK and Europe, their products are quality checked to ensure they deliver tools that comply with the very latest standards in quality and safety.EW Equipment has been trading for over 50 years, we can offer expert advice and knowledge for the best tooling for the job. Believe it or not, due to the narrow and exact tolerances the new thread normally is stronger than the original one. Silverline tools supplies a wide range of award-winning and top-rated hand and power tools across 26 categories. This assembled insert accommodates any standard bolt or screw (MIL-S-7742) and MIL-S8879 (UNJ controlled radius root) male threaded members.