Part number 21.003.200 appears under 3 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.

8145-01-701-9305 — SHIPPING AND STORAGE CONTAINER,M · FSC 8145
4220-01-678-0753 — VALVE,DIVING APPARATUS,RUBBER FL · FSC 4220
5985-01-662-2192 — ANTENNA · FSC 5985