H6, H06, or H-6 may refer to:

Science

British NVC community H6 NVC community H6 (''Erica vagans - Ulex europaeus'' heath) is one of the Heaths in the British National Vegetation Classification system, heath Terminology used in connection with the British National Vegetation Classification, communities in the ...

, an ecological designation *

Sanguiin H-6 Sanguiin H-6 is an ellagitannin. Natural occurrence Sanguiin H-6 can be found in Rosaceae such as the great burnet ('' Sanguisorba officinalis''), in strawberries ('' Fragaria × ananassa'') and in ''Rubus'' species such as red raspberries (''R ...

, a dimeric ellagitannin found in ''Sanguisorba officinalis'', the great burnet *

Hydrogen-6 Hydrogen (H) has three naturally occurring isotopes: H, H, and H. H and H are stable, while H has a half-life of years. Heavier isotopes also exist; all are synthetic and have a half-life of less than 1 zeptosecond (10 s). Of these, H is t ...

(H-6 or ⁶H), an isotope of hydrogen

Transportation

Aircraft

Hughes OH-6 Cayuse The Hughes OH-6 Cayuse is a single-engine light helicopter designed and produced by the American aerospace company Hughes Helicopters. Its formal name is derived from the Cayuse people, while its "Loach" nickname is derived from Light Observatio ...

, a 1963 American scout helicopter **

MD Helicopters MH-6 Little Bird The Boeing MH-6M Little Bird (nicknamed the Killer Egg) and its attack variant, the AH-6, are light helicopters used for special operations in the United States Army. Originally based on a modified OH-6A, it was later based on the MD 500E, w ...

, a special forces variant *

Xi'an H-6 The Xi'an H-6 ( zh, c=轰-6, p=Hōng-6) is a twin-engine jet bomber of the Chinese People's Liberation Army Air Force (PLAAF). The H-6 is a license-built version of the Soviet Tupolev Tu-16 and remains the primary bomber aircraft of the People ...

, a Chinese bomber * Besson H-6, a French flying boat *

Sikorsky R-6 The Sikorsky R-6 is an American light two-seat helicopter of the 1940s. In Royal Air Force and Royal Navy service, it was named the Hoverfly II. Development The R-6/Hoverfly II was developed to improve on the successful Sikorsky R-4. In order t ...

, a 1943 American helicopter

Watercraft

* HMS ''H6'', a British submarine * USS ''H-6'' (SS-149), a United States submarine * HMS ''Hurricane'' (H06), a British ''Havant''-class destroyer * HMS ''Keith'' (H06), a British B-class destroyer

Other vehicles

PRR H6 The Pennsylvania Railroad's class H6, H6a, and H6b steam locomotives were of the 2-8-0 "Consolidation" freight type, the most numerous class on the railroad with 1,707 units and the second most prolific 2-8-0 class in North America, with the USAT ...

, a steam locomotive *

Haval H6 The Haval H6 is a compact crossover SUV produced by the Chinese manufacturer Great Wall Motor under the Haval marque since 2011. It was introduced at the 2011 Shanghai Auto Show. It produced with both front-wheel-drive and four-wheel-drive dri ...

, a compact crossover SUV produced by Great Wall Motor *

Hispano-Suiza H6 The Hispano-Suiza H6 is a luxury car that was produced by Hispano-Suiza, mostly in France. Introduced at the 1919 Paris Motor Show,Ultimatecarpage.com – Hispano Suiza H6C Monza the H6 was produced until 1933. Roughly 2,350 H6, H6B, and H6C cars ...

, an automobile

Roads

H6 Childs Way H6, H06, or H-6 may refer to: Science * British NVC community H6, an ecological designation * Sanguiin H-6, a dimeric ellagitannin found in ''Sanguisorba officinalis'', the great burnet * Hydrogen-6 (H-6 or 6H), an isotope of hydrogen Transpor ...

, a road in England * Highway H06, a road in Ukraine

Other uses

* , level 6 heading markup for HTML Web pages, see HTML element#heading *

Flat-six engine A flat-six engine, also known as a horizontally opposed-six, is a six-cylinder piston engine with three cylinders on each side of a central crankshaft. The most common type of flat-six engine is the boxer-six engine, where each pair of opposed c ...

, sometimes marketed as H6 * '' Halloween: The Curse of Michael Myers'', the sixth film in the ''Halloween'' franchise * '' H6: Diary of a Serial Killer'', a movie *

Composition H6 __NOTOC__ Composition H-6 is a melt-cast military aluminized high explosive. H-6 was developed in the United States. The chemical composition of H-6 is specified as follows: * 45.1 ± 0.3% RDX ; * 29.2 ± 3.0% TNT; * 21.0 ± 3.0% powdered alum ...

, an explosive * H6, a watch possibly made by

John Harrison John Harrison ( – 24 March 1776) was an English carpenter and clockmaker who invented the marine chronometer, a long-sought-after device for solving the History of longitude, problem of how to calculate longitude while at sea. Harrison's sol ...

* H6, the name given by the British Home Office to a Chinese businessman and alleged spy

Yang Tengbo Yang Tengbo (, born ), also known as Chris Yang, is a Chinese businessman. He was barred from the United Kingdom by the Home Office in 2023 following accusations that he was using his relationship with Prince Andrew, Duke of York to Chinese intel ...