Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 464-225MS1-4-45S found under Transducer Ultrasonic by Olympus Ndt Ne Inc. The National Stock Number assigned to this part is 6635000185828, 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 464-225MS1-4-45S.