M40 or M-40 may refer to:
Transportation
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M40 motorway, a motorway in England
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M-40 (Michigan highway)
M-40 is a north–south state trunkline highway in the Lower Peninsula of the US state of Michigan. The highway runs from US Highway 12 (US 12) near the Indiana state line in Porter Township north through Paw Paw and Allegan to end in ...
, a state highway in Michigan, US
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M40 (Cape Town), a Metropolitan Route in Cape Town, South Africa
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M40 (Johannesburg), a Metropolitan Route in Johannesburg, South Africa
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M40 (Pietermaritzburg), a Metropolitan Route in Pietermaritzburg, South Africa
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Autopista de Circunvalación M-40, a motorway in Madrid, Spain
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BMW M40, a 1987 automobile piston engine
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Charomskiy M-40, an aircraft engine
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Volvo M40 transmission, an automobile transmission
Science
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Messier 40 (M40), a double star in the constellation Ursa Major
* the 40th
Mersenne prime
In mathematics, a Mersenne prime is a prime number that is one less than a power of two. That is, it is a prime number of the form for some integer . They are named after Marin Mersenne, a French Minim friar, who studied them in the early 17th ...
Firearms and military equipment
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M40 field protective mask
The M40 field protective mask was one of various protective masks used by the United States Armed Forces and its allies to protect from field concentrations of chemical and biological agents, along with radiological fallout particles. It is not ...
, a United States military gas mask
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M40 rifle
The M40 rifle is a bolt-action sniper rifle used by the United States Marine Corps. It has had four variants: the M40, M40A1, M40A3, and M40A5. The M40 was introduced in 1966. The changeover to the A1 model was completed in the 1970s, the A3 i ...
, a sniper rifle
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M40 Gun Motor Carriage
The 155 mm Gun Motor Carriage M40 was an American self-propelled artillery vehicle built on a widened and lengthened Medium Tank M4A3 chassis, but with a Continental engine and with HVSS (Horizontal Volute Spring Suspension), which was intro ...
, a United States self-propelled artillery vehicle
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M40 recoilless rifle
The M40 recoilless rifle is a portable, crew-served 105 mm recoilless rifle made in the United States. Intended primarily as an anti-tank weapon, it could also be employed in an antipersonnel role with the use of an antipersonnel-tracer fle ...
, an anti-tank gun
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M/40 Automatic cannon, a Swedish heavy machine gun
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Macchi M.40
The Macchi M.40 was a prototype 1920s Italian catapult-launched reconnaissance floatplane designed and built by Macchi, it did not enter production.
Design
The M.40 was an all-metal equal-span biplane powered by a Fiat A.20 piston engine. It ha ...
, a prototype 1920s Italian catapult-launched reconnaissance seaplane
* The incorrect designation for the
SSh-40, a Russian infantry helmet
Athletics
* M 40, an age group for
Masters athletics
Masters athletics is a class of the sport of athletics for athletes of over 35 years of age. The events include track and field, road running and cross country running. Competitors are bracketed into five-year age groups (which promotes fair comp ...
(athletes aged 35+)
Technology
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Samsung Galaxy M40, a smartphone
See also
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40M (disambiguation)
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