Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EMA3 7 16 20UNF 2A found under Coupling Half Quick by Royal Appliance Mfg Co. The National Stock Number assigned to this part is 4730016439124, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like EMA3 7 16 20UNF 2A.