Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6057 found under Valve Solenoid by Rosco Mfg Co. The National Stock Number assigned to this part is 4810013368109, 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 6057.