OVERVIEW: Mainly used with air hoses that have brass MNPT fittings, these industrial interchange quick-connect air coupling adapters are handy. They connect air tools and hoses to compressed air supplies for many applications.
Both coupling plugs (males) and sprockets (female) are available with female NPT thread connections. Available in 1/4", 3/8", and 1/2" body sizes, with different FMNPT sizes.
Also called Milton M or Mil-Spec (MIL-C-4109), these couplings are the most common interchange type.