The Heater,water,electric, cataloged under National Stock Number 4520-01-057-6471, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Heater,water,electric |
| FSC / FSG | 4520 — Space and Water Heating Equipment (FSG 45) |
| Manufacturers | W.w. Grainger, Inc. Div Government Sales Division (CAGE 25795) |
| Parameter | Value |
|---|---|
| NSN | 4520-01-057-6471 |
| Primary Part Number | 1PZ77 |
| Item Name | Heater,water,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| 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 |
|---|---|
| 3E203 | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| 1PZ77 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| Reference | Meaning |
|---|---|
| LTA082KK | 5/9 Secondary reference Lochinvar Llc |
| 1P277 | 5/9 Secondary reference W.w. Grainger, Inc. Div Government Sales Division |
| 3E203J | 5/9 Secondary reference W.w. Grainger, Inc. Div Government Sales Division |
| ETA082KK | 5/9 Secondary reference Lochinvar Llc |
| EFR90-82D | 5/9 Secondary reference Mor-Flo Industries Inc |
| 6E724 | 5/9 Secondary reference W.w. Grainger, Inc. Div Government Sales Division |
| 3E121 | 5/9 Secondary reference W.w. Grainger, Inc. Div Government Sales Division |
NSN 4520-01-057-6471 is a Heater,water,electric, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-057-6471 has 2 manufacturer part numbers on file: 3E203 (W.w. Grainger, Inc. Div Government Sales Division), 1PZ77 (W.w. Grainger, Inc. Div Government Sales Division).
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.