The Heating Element,electrical,immer, cataloged under National Stock Number 4520-00-481-4211, 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 General Electric Company. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 — Space and Water Heating Equipment (FSG 45) |
| Manufacturers | Wellman Thermal Systems Corp (CAGE 58823); General Electric Company (CAGE 07482) |
| Parameter | Value |
|---|---|
| NSN | 4520-00-481-4211 |
| Primary Part Number | 21C1705-130 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | General Electric Company |
| 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 |
|---|---|
| MP4127 | Wellman Thermal Systems Corp (USA) |
| 21C1705-130 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 2D227G2 | 5/9 Secondary reference Wellman Thermal Systems Corp |
NSN 4520-00-481-4211 is a Heating Element,electrical,immer, manufactured by General Electric Company, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-481-4211 has 2 manufacturer part numbers on file: MP4127 (Wellman Thermal Systems Corp), 21C1705-130 (General Electric Company).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-449-4182. Verify interchangeability with system specifications before substitution.
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.