Part number 520B appears under 4 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.

3805-01-071-9753 — LOADER,SCOOP TYPE · FSC 3805
6625-01-080-3471 — TESTER,TRANSISTOR · FSC 6625
2540-01-321-9986 — LATCH,DOOR,VEHICULAR · FSC 2540
6625-01-095-9344 — TEST SET,SEMICONDUCTOR DEVICE · FSC 6625