Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 123CSM11843-506 found under Fitting Assembly Ou by D F P Manufacturing Corp. The National Stock Number assigned to this part is 1560012155564, 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 123CSM11843-506.