The Diffuser,pump, cataloged under National Stock Number 4320-01-509-3877, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Coffin Turbo Pump Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-509-3877 |
| Primary Part Number | 7451-1 |
| Item Name | Diffuser,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Coffin Turbo Pump Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7451-1 PRIMARY | Coffin Turbo Pump Inc (USA) |
NSN 4320-01-509-3877 is a Diffuser,pump, manufactured by Coffin Turbo Pump Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-509-3877 has 1 manufacturer part number on file: 7451-1 (Coffin Turbo Pump Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-616-8920, 5130-01-734-1705. Verify interchangeability with system specifications before substitution.
Key specifications for 7451-1: Special Features: USED ON COFFIN TURBO MAIN FEED PUMPS, SHIP IS USS LASALLE AGF3; Part Name Assigned by Controlling Agency: DIFFUSER ASSEMBLY. 0 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.
NSN 4320-01-509-3877 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.