Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 48-204-11B found under Bearing Washer Thrust by Beaird Industries Inc. The National Stock Number assigned to this part is 3120002251926, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 48-204-11B.