Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1U-0623 found under Carriage Assembly by Caterpillar Inc. The National Stock Number assigned to this part is 2590016074202, 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 1U-0623.