Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FB8.25-6.25OB150-1 found under Thermowell by Rdf Corporation. The National Stock Number assigned to this part is 6685015227218, 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 FB8.25-6.25OB150-1.