Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SFS-02 found under Valve Regulating Te by Lawler Manufacturing Inc. The National Stock Number assigned to this part is 4820012013445, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SFS-02.