H4,
H04 or
H-4 can refer to various objects, places or status:
- * H4 lamp, a dual-filament headlight bulb for automobiles
- * H-4 BVR-AAM, a Pakistani air-to-air missile
- * GNR Class H4, a 1920 British 2-6-0 steam locomotive model
- * HMS H4, a 1915 British Royal Navy H class submarine
- * HMS Tenedos (H04), a 1918 British Royal Navy Admiralty 'S' class destroyer
- * Hughes H-4 Hercules (Spruce Goose), an aircraft
- * PRR H4, an American PRR locomotives model
- * USS H-4 (SS-147), a 1918 United States Navy submarine
- * Zoom H4 Handy Recorder, a digital audio recorder distributed by Samson Technologies
- and also :
- * flat-4, an engine configuration
- * Harrison Number Four, an 18th century (1773) marine chronometer designed by John Harrison
- * Héli Sécurité Helicopter Airlines and Inter Islands Airlines IATA airline designators
- * The concept SUV Hummer HX which will lead to a production Hummer H4
- * British NVC community H4, Ulex gallii - Agrostis curtisii heath
- * Hyperbolic 4 dimensions, referring to a hyperbolic universe with four dimensions (three spatial and one time)
- * Lycée Henri-IV (or "HIV" pronounced "H4"), a public high school in Paris, France
- * H-4 visa (commonly known as H4 visa), status granted to the immediate family members (spouse and children under 21) of the H-1B visa holders
- * Halloween 4: The Return of Michael Myers, a horror film commonly abbreviated H4.
- * H4 Dansteed Way, a road in Milton Keynes grid road system
- * ATC code H04, a section of the Anatomical Therapeutic Chemical Classification System
- * Highway H04 (Ukraine), a Roads in Ukraine
- * Histamine H4 receptor, a human gene
- * Histone H4, a component of DNA higher structure in eukaryotic cells
- * Disorders of lacrimal system ICD-10 code
- * H4 (Protocol) is a transport protocol for HCI packets over UART