Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ABT-0504-S-SM found under Transducer Ultrasonic Test by Olympus Scientific Solutions. The National Stock Number assigned to this part is 6635015967438, 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 ABT-0504-S-SM.