Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1420-OMS-ADD-01 found under Fixture Test Optical Equipment by Spectron Engineering Inc. The National Stock Number assigned to this part is 6650015502459, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1420-OMS-ADD-01.