Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 01-472-0004-3PC57 found under O Ring by Timken Gears And Services Inc. The National Stock Number assigned to this part is 5331001212820, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 01-472-0004-3PC57.