It is an external secondary locking feature which provides an enhanced reliability and maintainability alternative to lockwire, tab washers, cotter pins, de-formed threads, locking elements, or thread lock compound (e.g., “Locktite”).
The standard material is Inconel 718.
As the component is assembled, the Click-Loc® engages during the last two turns prior to seating. Once engaged, the flexible beam fingers of the lockring act against the detent cam of the mating part to provide a prevailing torque which is sufficient to prevent loosening from all tested applications.
Most applications are critical components on aerospace products, including fuel line coupling nuts, borescope plugs, drain plugs, pylon locks, adjustable mechanical linkages, and engine mounts.
Products that use Click-Loc® include such industry leaders as GE Aircraft Engines, Pratt & Whitney, Rolls-Royce, Honeywell, Boeing, Lockheed Martin, Safran, the U.S. Air Force, the U.S. Navy, and many more. Click-Loc® has been used in commercial and military aircraft and other applications since 1993.
Click-Loc® has demonstrated hundreds of installation/removal cycles in applications up to 600°F and 100+ cycles from 600°F to 1350°F. Generally, Click-Loc® reusability exceeds the service life of the component in which it is installed.
YES! Self-locking drop-in replacement plugs can be used to replace or dual source the existing plug if the mating port is already designed. Retrofit fluid fittings are designed for existing fluid fittings.
Click-Loc® is an external secondary locking device which does not affect the sealing surfaces, however if the leaking fittings are attributed to coupling nuts becoming loose, Click-Loc® will fix it.
No. The Click-Loc® adds some prevailing torque during the last two turns immediately before seating.
Yes. Click-Loc® is made from Inconel 718. Retrofit kits can be applied to couplings made of virtually any material.
No. As with other fluid fittings, plugs, and fasteners, Click-Loc® products may be lubricated before tightening, but this is not required.
Yes. Generally, a 1/16″ larger size must be used.
Since Click-Loc® can only be installed one way, once the primary device is torqued correctly, the Click-Loc® secondary locking device will be locked in place automatically. Generally, the Click-Loc® will also produce a noticeable clicking sound as well. Click-Loc® provides secondary retention in the event the primary device is compromised.
Yes. Dirt, carbon buildup, and other contaminants do not significantly affect performance.
New components are typically retained by a controlled interference fit, sufficient to provide a safety margin over the maximum forces that could be expected. Retrofit components are generally sleeves that snap in place.
Reliability data has been tracked. It is measured in the hundreds of millions of trouble-free component flight hours. Since its introduction in 1995, there has NEVER been a report of a Click-Loc® product coming loose in testing or service.