Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 70504 found under Bladder Inner Tank by Tyco Fire And Integrated Solutions. The National Stock Number assigned to this part is 4210014712609, 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 70504.