The Tank,hot Water Storage, cataloged under National Stock Number 4520-00-329-7449, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4520-00-329-7449 |
| Item Name | Tank,hot Water Storage |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Overall Diameter | 24.000 INCHES NOMINAL IN |
| Capacity | 150.0 GALLONS TANK |
| Mounting Position | HORIZONTAL |
| Insulated Feature | NOT INCLUDED |
| Thread Size | 1-1/2-11-1/2 NPT |
| Material | STEEL |
| Fabrication Method | WELDED |
| Connection Quantity | 6 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| TA3663N14 | 5/9 Secondary reference Lift Parts Mfg Co Inc Div of Echlin Mfg Co the |
| 3663N14 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
| 4BAA661105-141 | 3/9 Design control — primary reference U.S. Government activity |
| 150R | 5/9 Secondary reference Chicago Boiler Co |
| A4080 | 5/9 Secondary reference Chicago Boiler Co |
NSN 4520-00-329-7449 is a Tank,hot Water Storage, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5360-00-852-9301, 6240-01-386-0842. Verify interchangeability with system specifications before substitution.
Key specifications for 4520-00-329-7449: Overall Diameter: 24.000 INCHES NOMINAL IN; Capacity: 150.0 GALLONS TANK; Mounting Position: HORIZONTAL; Overall Length: 82.000 INCHES NOMINAL IN. 8 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.