Historical
ISO 8470:2006
Road vehicles - M14 x 1,25 spark-plugs with flat seating and 16 mm hexagon and their cylinder head housings
ISO 8470:2006 specifies characteristics of M14 x 1,25 spark-plugs with flat seating and 16 mm hexagon and their cylinder head housings, for use with spark-ignition engines.
International Organization for Standardization [iso]