The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-491-7088, 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 Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4520-01-491-7088 |
| Primary Part Number | 128223 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Terminal Quantity | 2 |
| Length | 13.630 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 120.0 DC SINGLE VOLTAGE |
| Body Style | STRIP, FINNED |
| Maximum Wattage Rating in Watts | 1300.0 SINGLE VOLTAGE |
| Mounting Facility Length | 1.400 INCHES NOMINAL IN |
| Element Connection Style | TERMINAL SCREW |
| Mounting Method Style | STANDOFF TYPE MOUNTING FACILITY |
| Heat Quantity | 1 |
| Terminal Arrangement Style | OFFSET OR STAGGERED AT ONE END |
| Watt Density Rating | 26.0 PER SQUARE INCH SINGLE VOLTAGE |
| Element Radiation Spectrum | NONINFRARED |
| Width | 2.000 INCHES NOMINAL IN |
| Material | IRON RUST RESISTING SHEATH |
| Element Quantity | 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 128223 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| 2007848-003 | L3harris Technologies, Inc. Dba Harris Div L3harris Technologies Inc Dba Harris Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2007848 | D/9 Drawing number reference only L3harris Technologies, Inc. Dba Harris Div L3harris Technologies Inc Dba Harris Corporation |
| OTF-18 | 5/9 Secondary reference Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
NSN 4520-01-491-7088 is a Heating Element,electrical,nonim, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-491-7088 has 2 manufacturer part numbers on file: 128223 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 2007848-003 (L3harris Technologies, Inc. Dba Harris Div L3harris Technologies Inc Dba Harris Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 4520-01-491-7159, 6150-01-552-4979. Verify interchangeability with system specifications before substitution.
Key specifications for 128223: Terminal Quantity: 2; Length: 13.630 INCHES NOMINAL IN; Voltage in Volts and Current Type: 120.0 DC SINGLE VOLTAGE; Body Style: STRIP, FINNED. 15 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.
NSN 4520-01-491-7088 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.