Part number 4391-8 appears under 6 stock numbers

Manufacturers reuse part numbers across items. Each stock number below is its own federal item record — pick the one your drawing or solicitation cites.

5120-00-061-9310 — SOCKET,SOCKET WRENCH · FSC 5120
5950-00-107-2625 — TRANSFORMER,POWER · FSC 5950
5930-01-237-2481 — SWITCH,THERMOSTATIC · FSC 5930
4730-01-589-0327 — PORT PLUG,LARGE · FSC 4730
5210-01-367-7280 — SQUARE,COMBINATION · FSC 5210
2990-01-320-5473 — PIPE,EXHAUST · FSC 2990