The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-236-2820, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Pentair Pump Group, Inc. Dba Fairbanks Morse Pump. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-236-2820 |
| Primary Part Number | K1 1-2T1B |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump |
| Status | ACTIVE |
| Overall Diameter | 8.875 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| K1 1-2T1B PRIMARY | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump (USA) |
| 99K1 1-2T-A LINE 3 | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump (USA) |
| Reference | Meaning |
|---|---|
| K1 1-2T1B | C/1 Advisory reference — outside the item-of-supply concept Colt Industries Inc Power Systems Div |
| 99K1 1-2T-A | D/9 Drawing number reference only Pentair Pump Group, Inc. Dba Fairbanks Morse Pump |
NSN 4320-01-236-2820 is a Impeller,pump,centrifugal, manufactured by Pentair Pump Group, Inc. Dba Fairbanks Morse Pump, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-236-2820 has 2 manufacturer part numbers on file: K1 1-2T1B (Pentair Pump Group, Inc. Dba Fairbanks Morse Pump), 99K1 1-2T-A LINE 3 (Pentair Pump Group, Inc. Dba Fairbanks Morse Pump).
Key specifications for K1 1-2T1B: Overall Diameter: 8.875 INCHES NOMINAL IN; Material: COPPER ALLOY; Rotation Direction for Which Designed: COUNTERCLOCKWISE. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.