Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EN19-28-1 found under Hose Assembly Nonme by Pierce Co Inc The. The National Stock Number assigned to this part is 4720007879929, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like EN19-28-1.