EN6115, EN6114 Series fasteners are commonly used on Airbus A320, A330, A350 and A380 aircraft. Airbus A320/ A330 aicraft commonly use the alloy steel version of the EN6114 series and the Titanium series indicated by the V and T coding. The new A350 and A380 designs incorporate Inconel material deliniated by the L and M coding. You can find the EN6114 drawing here
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Several HLT, HST, NSA, and VL alternates to EN6114 series exit. Below is a table identifying EN6114 alternates.
Ultimate reliability in high-performance aircraft is achieved with the Mark IV™ structural panel fastener. Quick operation is assured through multiple lead threads and exceptionally high reusability is achieved with the Flat Beam™ locking feature that provides a 1,500 seated life cycle. A lightweight titanium version combines a 40% weight savings with equivalent mechanical performance.