The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-546-1012, 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 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-546-1012 |
| Primary Part Number | 044239001 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Flange Diameter | 5.750 INCHES NOMINAL IN |
| Terminal Quantity | 6 |
| Length | 15.375 INCHES MINIMUM AND 15.875 INCHES MAXIMUM IN |
| Body Style | TUBULAR, FLANGED, W/TERMINALS |
| Hole or Slot Quantity | 6 |
| Flange Thickness | 0.375 INCHES NOMINAL IN |
| Element Connection Style | HERMETICALLY SEALED STUD |
| Criticality Code Justification | AGAV |
| Mounting Method Style | FLANGE TYPE MOUNTING FACILITY |
| Bolt Circle Diameter | 4.875 INCHES NOMINAL IN |
| Element Radiation Spectrum | NONINFRARED |
| Material | STEEL CORROSION RESISTING SHEATH |
| Hole Diameter | 0.406 INCHES NOMINAL IN |
| 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 044239001 | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| 17749 REV A SH 4 PC 11 | 5/1 Secondary reference The Electric Heater Co Dba Hubbell Electric Heater Co. |
| F124403SS | 3/9 Design control — primary reference Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
NSN 4520-01-546-1012 is a Heating Element,electrical,immer, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-546-1012 has 1 manufacturer part number on file: 044239001 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
Key specifications for 044239001: Flange Diameter: 5.750 INCHES NOMINAL IN; Terminal Quantity: 6; Length: 15.375 INCHES MINIMUM AND 15.875 INCHES MAXIMUM IN; Body Style: TUBULAR, FLANGED, W/TERMINALS. 14 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.