The Chamber,air Ejector, cataloged under National Stock Number 4320-01-350-9384, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Graham Corp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-350-9384 |
| Primary Part Number | B-37287-25 |
| Item Name | Chamber,air Ejector |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Graham Corp |
| Status | ACTIVE |
| General Characteristics Item Description | CARBON STEEL |
| 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 |
|---|---|
| D-37287-11 PIECE 8A | Graham Corp (USA) |
| B-37287-25 PRIMARY | Graham Corp (USA) |
| Reference | Meaning |
|---|---|
| D-37287-11 | D/9 Drawing number reference only Graham Mfg Co Inc for Procurement Use CAGE Code 1lcx3 |
| B-37287-25 | 3/9 Design control — primary reference Graham Mfg Co Inc for Procurement Use CAGE Code 1lcx3 |
| D-37287-11 PIECE 8A | 5/9 Secondary reference Graham Mfg Co Inc for Procurement Use CAGE Code 1lcx3 |
NSN 4320-01-350-9384 is a Chamber,air Ejector, manufactured by Graham Corp, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-350-9384 has 2 manufacturer part numbers on file: D-37287-11 PIECE 8A (Graham Corp), B-37287-25 (Graham Corp).
6 possible matches (shared part number, not a government interchangeability claim): 4730-01-351-1576, 4730-01-351-1643, 4730-01-351-5241. Verify interchangeability with system specifications before substitution.
Key specifications for B-37287-25: General Characteristics Item Description: CARBON STEEL; End Item Identification: GRAHAM MANUFACTURING C0. AUXILIARY AIR EJECTOR ASSEMBLY D-37287-11. 1 specification is 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.