4930-00-377-6818 (1F313)
NSN 4930-00-377-6818 (NIIN 00-377-6818) is a ball check valve in Federal Supply Class 4930, Lubrication And Fuel Dispensing Equipment. Manufacturer part number 1F313 (Caterpillar Inc, CAGE 11083); also referenced as G46405 (Stewart-Warner Corporation).
NIIN assigned January 1963; DEMIL A (none required).