Part number MS4 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.

5120-00-293-0195 — KEY,SOCKET HEAD SCREW · FSC 5120
3426-00-917-8786 — ANODE,PLATING · FSC 3426
5975-01-412-7780 — MOUNTING BASE,ELECTRICAL EQUIPME · FSC 5975
1650-01-029-7889 — CYLINDER ASSEMBLY,ACTUATING,LINE · FSC 1650
4820-01-383-7014 — VALVE,CHECK · FSC 4820
5330-01-474-4938 — SEAL,PLAIN · FSC 5330