Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 849 1 04 2HRT SIZE 3IN found under Valve Diaphragm Sto by Rockwell International Corp. The National Stock Number assigned to this part is 4820011346953, 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 849 1 04 2HRT SIZE 3IN.