Helicoil (also known as Heli-serts/Heliserts) s are available in free running and screw-lock forms and they come in a comprehensive range of lengths, materials, and platings. Helicoil Screw Thread Types: Helicoil types include Helicoil free running, Helicoil screw lock (thread locking), Helicoil tangless, Helicoil Oversize s, Helicoil Tw s, Helicoil Nitronic, Helicoil Inconel, Helicoil Phosphor Bronze, Helicoil Nimonic, Helicoil Dry Film, Helicoil Cadmium. About Helicoil Screw Thread s: Helicoil screw thread s are precision formed screw thread coils worked a diamond shape. This wire is then wound a spiral coil which when installed Helicoil tapped holes, provides a permanent conventional 60 deg internal screw threads. Helicoil screw thread s provide a positive means for protecting and strengthening tapped threads in any material. Helicoil screw thread s have an extensive background of tension, torque, shear, vibration and fatigue tests conducted by leading companies in America as well as the U.S. Military. Successful applications in the fields of aviation, electronics, industrial, automotive and military equipment provide a wealth of experience and confidence in the performance and reliability of Helicoil screw thread s. Details on Helicoil Screw Thread s: Helicoil Types: - Helicoil Free Running The standard Helicoil helically wound with precision-formed rounded coils and a diamond shaped cross-section - Helicoil Screw-Lock Screw Lock wire s have all the characteristics of free running s but in addition, one or more coils in the middle of the screwlock are polygon shaped. These coils serve as a locking device by gripping the threads of the installed screw, effectively preventing the screw from loosening under vibration or impact. Helicoil Materials & Platings: Besides the standard 304 (18-8) stainless steel, Heli coil thread s are also available in: - Materials : Inconel X-750, Nimonic 90, Phosphor Bronze, Nitronic 60, & Titanium - Platings : Dry Film Lubricant (Mollylube), Cadmium, Zinc and Silver, Passivated