Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3F20139-313 found under Panel Assembly Beam by Bonded Technology Inc. The National Stock Number assigned to this part is 1560000766642, 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 3F20139-313.