Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 821 00300 found under Plate Mounting by Jcb Inc. The National Stock Number assigned to this part is 2590016689835, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 821 00300.