Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 265840 ITEM 5 REV found under Retainer Seat Valve by Oil Capital Valve Company. The National Stock Number assigned to this part is 4820015985499, 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 265840 ITEM 5 REV.