The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-549-3489, 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 Chromalox Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4520-01-549-3489 |
| Primary Part Number | 144864 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Length | 10.500 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 240.0 AC SINGLE VOLTAGE |
| Body Style | STRIP ELEMENT |
| Maximum Wattage Rating in Watts | 800.0 SINGLE VOLTAGE |
| Element Connection Style | STUD TYPE |
| Terminal Arrangement Style | PARALLEL AT ONE END EXCEPT ON 3/4 AND 1 INCH WIDTH IN |
| Width | 2.500 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING SHEATH |
| Element Quantity | 1 |
| 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 |
|---|---|
| PA20397/2111 REV 3 ITEM 03 | Alstom Power Conversion Inc. (USA) |
| 144864 PRIMARY | Chromalox Inc (USA) |
| Reference | Meaning |
|---|---|
| PA20397/2111 | D/9 Drawing number reference only Performance Management Company |
NSN 4520-01-549-3489 is a Heating Element,electrical,nonim, manufactured by Chromalox Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-549-3489 has 2 manufacturer part numbers on file: PA20397/2111 REV 3 ITEM 03 (Alstom Power Conversion Inc.), 144864 (Chromalox Inc).
1 possible match (shared part number, not a government interchangeability claim): 4520-01-551-8094. Verify interchangeability with system specifications before substitution.
Key specifications for 144864: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Length: 10.500 INCHES NOMINAL IN; Voltage in Volts and Current Type: 240.0 AC SINGLE VOLTAGE. 11 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.