Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 064-12141 found under Collar Impellor Cla by Chesapeake Corp. The National Stock Number assigned to this part is 4310012191117, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 064-12141.