Part number 2644 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.

9540-00-197-9866 — CHANNEL,STRUCTURAL · FSC 9540
4240-01-152-3555 — MASK,AIR FILTERING · FSC 4240
5915-01-058-1323 — FILTER,LOW PASS · FSC 5915
5970-00-556-5462 — INSULATOR,STANDOFF · FSC 5970
5340-01-354-5933 — BUTTON,PLUG · FSC 5340
5136-01-431-6120 — TAP SET,THREAD CUTTING · FSC 5136
5930-00-421-2428 — SWITCH,ROTARY · FSC 5930
5998-01-117-5727 — CIRCUIT CARD ASSEMBLY · FSC 5998