Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FR 45B found under Valve Solenoid by Assembly And Test Worldwide Inc. The National Stock Number assigned to this part is 4810012517626, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FR 45B.