2805-00-657-4826 (B8QH-6507-AA)
NSN 2805-00-657-4826 (NIIN 00-657-4826) is an engine poppet valve in Federal Supply Class 2805, Gasoline Reciprocating Engines, Except Aircraft; And Components — a mushroom or tulip-shaped item having a circular head with a conical face and an extended stem used to regulate the flow of incoming fuel-air mixture or air. Manufacturer part number B8QH-6507-AA (Ford Motor Company, CAGE 57526); also referenced as V2298XS (Trw IncTrw Intl Trade Government); I-531S (Gould IncIndustrial Marketing Div); 5751318, B8QH6507AA1 (Ford Motor Co Ford Parts And Service).
Key specs: 20 nominal rockwell c stem metallic hardness; 43 nominal rockwell c head metallic hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); export Schedule B 8409.91.8000.