Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CB-00553-1D50A found under Hardware Kit Mechan by Pall Aeropower Corporation. The National Stock Number assigned to this part is 5340014800617, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CB-00553-1D50A.