Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 081-000269-000 found under Valve Diaphragm Sto by Insitu Inc. The National Stock Number assigned to this part is 4820016316475, 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 081-000269-000.