Part number 5566 appears under 10 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.

9540-01-072-1176 — ANGLE,STRUCTURAL · FSC 9540
5120-01-399-9704 — SOCKET,SOCKET WRENCH · FSC 5120
5331-00-231-3235 — O-RING · FSC 5331
2590-01-570-9720 — BRACKET,VEHICULAR COMPONENTS · FSC 2590
6540-01-558-7765 — OPHTHALMOSCOPE · FSC 6540
5935-00-259-3336 — CONNECTOR,RECEPTACLE,ELECTRICAL · FSC 5935
5365-01-306-5894 — SPACER,RING · FSC 5365
4730-01-195-3806 — ELBOW,PIPE · FSC 4730
3020-00-361-6342 — GEAR,SPUR · FSC 3020
5998-01-048-3769 — CIRCUIT CARD ASSEMBLY · FSC 5998