M42
The abbreviations M42 , M 42 and M-42 denote:
- M 42 or NGC 1976, an astronomical object, see Orion Nebula
- M42 (lens connection) , mainly for single lens reflex cameras
- M42 (Stahlhelm) , a German steel helmet from the time of the Second World War
- M42 Duster , a flak tank of the US Army and the German Armed Forces
- M42 (tank command vehicle) , an Italian tank command vehicle
- United Defense M42 , an American submachine gun
- BMW M42 , a gasoline engine from Bayerische Motoren Werke
- M42 motorway , a British motorway
- M-42 (Michigan) , a street in the US state of Michigan
