Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 520 14951 4 found under Plate Structural Aircraft by Monroe Machined Products Inc. The National Stock Number assigned to this part is 1560016654710, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 520 14951 4.