The Housing,liquid Pump, cataloged under National Stock Number 4320-01-447-9992, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4320-01-447-9992 |
| Primary Part Number | 999R0523 PIECE 3Q3 |
| Item Name | Housing,liquid Pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Pump Design Control Activity | 63857 |
| Pump Model Number for Which Designed | 4-TDHA-6 |
| Material | COPPER ALLOY |
| Reference Number Differentiating Characteristics | ITEMS THAT SUPPORT A LEVEL I OR SUBSAFE CRITICAL SYSTEM/COMPONENT THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS AND REQUIRES OBJECTIVE QUALITY EVIDENCE (OQE) TRACEABLE TO PERMANENT MARKING ON THE MATERIAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 999R0523 PIECE 3Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 691C0002C14YA Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 999R0523 PIECE 3 | 5/1 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
| 691C0002C14YA | 3/1 Design control — primary reference Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-447-9992 is a Housing,liquid Pump, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-447-9992 has 2 manufacturer part numbers on file: 999R0523 PIECE 3Q3 (Naval Inventory Control Point Mechanicsburg), 691C0002C14YA Q3 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 999R0523 PIECE 3Q3: Criticality Code Justification: ZZZY; Pump Design Control Activity: 63857; Pump Model Number for Which Designed: 4-TDHA-6; End Item Identification: STURGEON CLASS SSN (637). 5 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 4320-01-447-9992 has DEMIL Code B. 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.