MIL-C-4109F (AMENDMENT 1), MILITARY SPECIFICATION, COUPLING HALVES, LOW PRESSURE, AIR HOSE, QUICK-DISCONNECT (29 JUN 1992) [1]Archived 2017-08-27 at the Wayback Machine
homemetalshopclub.org
Kostelnicek, Dick. "Quick-Connect Pneumatic Couplers". Home Metal Shop Club, Volume 8 Number 8 [2]Archived 2017-07-04 at the Wayback Machine
MIL-C-4109F (AMENDMENT 1), MILITARY SPECIFICATION, COUPLING HALVES, LOW PRESSURE, AIR HOSE, QUICK-DISCONNECT (29 JUN 1992) [1]Archived 2017-08-27 at the Wayback Machine
Kostelnicek, Dick. "Quick-Connect Pneumatic Couplers". Home Metal Shop Club, Volume 8 Number 8 [2]Archived 2017-07-04 at the Wayback Machine