The Piston,pump, cataloged under National Stock Number 4320-01-188-2147, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-188-2147 |
| Primary Part Number | 385225-00 |
| Item Name | Piston,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| FSC Application Data | STEAM PUMP,NAVY VESSEL |
| Material Document and Classification | QQ-I-652A, GRADE B-CANCELED FED SPEC SINGLE MATERIAL RESPONSE A |
| Material | IRON CAST |
| 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 |
|---|---|
| 385225-00 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| DY-127729 ITEM 5 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 385225-00 | 3/9 Design control — primary reference U.S. Government activity |
| 385225 | 5/9 Secondary reference U.S. Government activity |
| DY-127729 ITEM 5 | 5/9 Secondary reference U.S. Government activity |
| DY-127729 | D/9 Drawing number reference only U.S. Government activity |
NSN 4320-01-188-2147 is a Piston,pump, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-188-2147 has 2 manufacturer part numbers on file: 385225-00 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), DY-127729 ITEM 5 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-579-7140. Verify interchangeability with system specifications before substitution.
Key specifications for 385225-00: FSC Application Data: STEAM PUMP,NAVY VESSEL; Material Document and Classification: QQ-I-652A, GRADE B-CANCELED FED SPEC SINGLE MATERIAL RESPONSE A; Material: IRON CAST. 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.