Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PGH4X6 found under Coupling Hose by United Technologies Automotive Inc. The National Stock Number assigned to this part is 4730005076889, 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 PGH4X6.