Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CU2109B found under Cabinet Electrical Equipment by Dyno Bud Industries Inc. The National Stock Number assigned to this part is 5975004891407, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CU2109B.