Part number 2156-9 appears under 8 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.

5950-01-165-5360 — TRANSFORMER,POWER · FSC 5950
6545-01-593-5504 — INTUBATION KIT,AIRWAY · FSC 6545
5340-01-478-8679 — RETAINER,HELICAL COMPRESSION SPR · FSC 5340
4520-01-278-0895 — HEATING ELEMENT,ELECTRICAL,NONIM · FSC 4520
5331-01-096-3792 — O-RING · FSC 5331
2040-01-479-2176 — CUSHION,DOOR STOP · FSC 2040
5330-00-937-0532 — GASKET · FSC 5330
3110-01-438-0117 — BEARING,BALL,ANNULAR · FSC 3110