The Heater,water,electric, cataloged under National Stock Number 4520-01-283-2105, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4520-01-283-2105 |
| Item Name | Heater,water,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Thermostatic Switch | NOT INCLUDED |
| Heating Element Wattage Rating | 4500.000 SINGLE |
| Capacity | 50.0 GALLONS TANK |
| Heating Capacity Per Hour | 50.0 GALLONS |
| Material | GLASS |
| 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 |
|---|---|
| ER52D | 5/9 Secondary reference Mor-Flo Industries Inc |
| LTA052KK | 5/9 Secondary reference Lochinvar Llc |
| EFR52D | 5/9 Secondary reference Mor-Flo Industries Inc |
| ETA050KK | 3/9 Design control — primary reference Lochinvar Llc |
NSN 4520-01-283-2105 is a Heater,water,electric, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4520-01-313-4734. Verify interchangeability with system specifications before substitution.
Key specifications for 4520-01-283-2105: Thermostatic Switch: NOT INCLUDED; Heating Element Wattage Rating: 4500.000 SINGLE; Capacity: 50.0 GALLONS TANK; Heating Capacity Per Hour: 50.0 GALLONS. 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.
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.