Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11504 found under Insulator Bearing by City Entertainment Corporation. The National Stock Number assigned to this part is 3110011595006, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 11504.