The Heating Element,electrical,immer, cataloged under National Stock Number 4520-00-454-8022, 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 Wellman Thermal Systems Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4520-00-454-8022 |
| Primary Part Number | 2D307G38 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Wellman Thermal Systems Corp |
| Status | ACTIVE |
| Shielding Length | 3.500 INCHES NOMINAL IN |
| Terminal Quantity | 2 |
| Length | 9.250 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 120.0 DC SINGLE VOLTAGE |
| Body Style | SCREW TYPE |
| Maximum Wattage Rating in Watts | 1000.0 SINGLE VOLTAGE |
| Terminal Length | 3.750 INCHES NOMINAL IN |
| Element Connection Style | SHIELDED WIRE LEAD |
| Effective Heating Length | 8.750 INCHES NOMINAL IN |
| Terminal Box Environmental Protection | MOISTURE RESISTANT |
| Mounting Method Style | PIPE THREAD TYPE MOUNTING FACILITY |
| Nominal Thread Size | 2.000 INCHES MOUNTING FACILITY IN |
| Heat Quantity | 1 |
| Thermostat Range | +10.0 TO 26.6 CELSIUS DEGC |
| Heat Control Type | THERMOSTAT |
| Conduit Opening Size | 0.750 INCHES NOMINAL IN |
| Element Radiation Spectrum | NONINFRARED |
| Material | MAGNESIUM OXIDE RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION |
| Material | NICKEL AND CHROMIUM RESISTANCE WIRE |
| Material | STEEL SHEATH |
| Thread Series Designator | NPT MOUNTING FACILITY |
| Thread Quantity | 11.5 PER INCH MOUNTING FACILITY |
| 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 |
NSN 4520-00-454-8022 is a Heating Element,electrical,immer, manufactured by Wellman Thermal Systems Corp, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-454-8022 has 2 manufacturer part numbers on file: 2D307G38 (Wellman Thermal Systems Corp), 6-43-46-1 (Watlow Electric Manufacturing Co Dba Watlow).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-700-1190. Verify interchangeability with system specifications before substitution.
Key specifications for 2D307G38: Shielding Length: 3.500 INCHES NOMINAL IN; Terminal Quantity: 2; Length: 9.250 INCHES NOMINAL IN; Voltage in Volts and Current Type: 120.0 DC SINGLE VOLTAGE. 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.