Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HAN0631B08304210 found under Valve Fire Extinguisher by Esi Electronic Corp. The National Stock Number assigned to this part is 4210015388333, and the Federal Supply Class is 4210 Firefighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HAN0631B08304210.