The Heating Element,electrical,immer, cataloged under National Stock Number 4520-00-910-4049, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-910-4049 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Flange Diameter | 5.750 INCHES NOMINAL IN |
| Terminal Quantity | 6 |
| Voltage in Volts and Current Type | 115.0 DC SINGLE VOLTAGE |
| Body Style | FLANGE, TYPE |
| Hole or Slot Quantity | 6 |
| Flange Thickness | 0.500 INCHES NOMINAL IN |
| Element Connection Style | TERMINAL SCREW |
| Mounting Method Style | FLANGE TYPE MOUNTING FACILITY |
| Nominal Thread Size | 0.190 INCHES SCREW IN |
| Heat Quantity | 1 |
| Bolt Circle Diameter | 4.875 INCHES NOMINAL IN |
| Heat Control Type | THERMOSTAT |
| Conduit Opening Size | 0.750 INCHES NOMINAL IN |
| Element Radiation Spectrum | NONINFRARED |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW |
| Thread Quantity | 24.0 PER INCH SCREW |
| Hole Diameter | 0.469 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 | X |
| Reference | Meaning |
|---|---|
| MX540-2PC37 | 5/9 Secondary reference Pottstown Water Heater Co Inc |
| 2TK2500-115DC | 3/9 Design control — primary reference Pottstown Water Heater Co Inc |
| NX540-2PC37 | 5/9 Secondary reference Pottstown Water Heater Co Inc |
NSN 4520-00-910-4049 is a Heating Element,electrical,immer, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-00-910-4049: Flange Diameter: 5.750 INCHES NOMINAL IN; Terminal Quantity: 6; Voltage in Volts and Current Type: 115.0 DC SINGLE VOLTAGE; Body Style: FLANGE, TYPE. 18 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.