A major (or the key of A) is a major scale based on flat, with the pitches A, flat, C, flat, flat, F, and G. Its key signature has four flats.
F4, F.IV, F04, F 4, F.4 or F-4 may refer to.
4 Flotille (abbreviated to 4F) is a French Aeronavale aircraft squadron based at Base Aéronavale de Lann Bihoué and equipped with three Northrop Grumman E-2C Hawkeye aircraft, these aircraft are operated from the aircraft carrier ''Charles de Gaulle.
Four Fs may stand for.
The London Midland and Scottish Railway (LMS) Fowler 4F is a class of 0-6-0 steam locomotive designed for medium freight work.