The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-938-2907, 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 23 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-938-2907 |
| Primary Part Number | 155-038682-003 |
| 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 |
| Flange Diameter | 3.500 INCHES NOMINAL IN |
| Phase | NOT RATED SINGLE VOLTAGE |
| Terminal Quantity | 6 |
| Length | 18.750 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 266.0 AC SINGLE VOLTAGE |
| Body Style | TUBULAR, FLANGED, W/TERMINALS |
| Hole or Slot Quantity | 4 |
| Flange Thickness | 0.250 INCHES NOMINAL IN |
| Maximum Wattage Rating in Watts | 1667.0 SINGLE VOLTAGE |
| Terminal Length | 0.375 INCHES NOMINAL IN |
| Element Connection Style | STUD TYPE |
| Effective Heating Length | 18.750 INCHES NOMINAL IN |
| Mounting Method Style | FLANGE TYPE MOUNTING FACILITY |
| Nominal Thread Size | 0.190 INCHES STUD IN |
| Heat Quantity | 1 |
| Watt Density Rating | 120.2 PER SQUARE INCH SINGLE VOLTAGE |
| Bolt Circle Diameter | 2.750 INCHES NOMINAL IN |
| Element Radiation Spectrum | NONINFRARED |
| Material | COPPER SHEATH |
| Thread Series Designator | UNF STUD |
| Thread Quantity | 32.0 PER INCH MOUNTING FACILITY |
| Hole Diameter | 0.375 INCHES NOMINAL IN |
| Element Quantity | 3 |
| 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 |
|---|---|
| 3-38683N | The Electric Heater Co Dba Hubbell Electric Heater Co. (USA) |
| 155-038682-003 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| 82-112J-82 | D/9 Drawing number reference only The Electric Heater Co Dba Hubbell Electric Heater Co. |
| 3-38683 | 3/9 Design control — primary reference The Electric Heater Co Dba Hubbell Electric Heater Co. |
NSN 4520-00-938-2907 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 4520-00-938-2907 has 2 manufacturer part numbers on file: 3-38683N (The Electric Heater Co Dba Hubbell Electric Heater Co.), 155-038682-003 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
Key specifications for 155-038682-003: Flange Diameter: 3.500 INCHES NOMINAL IN; Phase: NOT RATED SINGLE VOLTAGE; Terminal Quantity: 6; Length: 18.750 INCHES NOMINAL IN. 23 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.