Part number 21657 appears under 11 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.

2530-00-350-6492 — FILTER,FLUID · FSC 2530
6685-00-488-5591 — THERMOMETER,SELF-INDICATING,BIME · FSC 6685
4140-01-545-6800 — FAN,CIRCULATING · FSC 4140
5895-01-384-5623 — MODEM,COMMUNICATIONS · FSC 5895
4730-01-036-9487 — ADAPTER,STRAIGHT,PIPE TO BOSS · FSC 4730
5905-00-115-7216 — RESISTOR,VARIABLE,WIRE WOUND,NON · FSC 5905
5310-01-327-9064 — WASHER,SPRING TENSION · FSC 5310
5330-00-997-1909 — PACKING,PREFORMED · FSC 5330
5963-01-652-9908 — ELECTRONIC MODULE,STANDARDIZED · FSC 5963
4720-01-434-7947 — HOSE ASSEMBLY,NONMETALLIC · FSC 4720
5310-01-413-8996 — WASHER,SPRING TENSION · FSC 5310