Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5500W1-2-1381PC8 found under Adapter Bushing by Ashcroft Inc. The National Stock Number assigned to this part is 4730008925658, 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 5500W1-2-1381PC8.