Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 38375420 found under Reducer Pipe by Spears Mfg Co. The National Stock Number assigned to this part is 4730002634202, 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 38375420.