Part number 20-556 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.

5950-00-647-5829 — TRANSFORMER,POWER · FSC 5950
5120-01-430-8118 — CROWFOOT ATTACHMENT,SOCKET WRENC · FSC 5120
5110-01-273-5951 — SAW,JAB · FSC 5110
6220-00-887-2307 — HOUSING AND SOCKET,PANEL FLOODLI · FSC 6220
4810-01-380-1346 — CAP,VALVE · FSC 4810
5365-01-229-5499 — SPACER,SLEEVE · FSC 5365