The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-124-3653, 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 Lockheed Martin Corporation Div Rms. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-124-3653 |
| Primary Part Number | MP3502 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Phase | NOT RATED SINGLE VOLTAGE |
| Terminal Quantity | 4 |
| Length | 6.875 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 120.0 AC OR 240.0 AC SINGLE VOLTAGE |
| Body Style | TUBULAR, SCREW TYPE |
| Maximum Wattage Rating in Watts | 2000.0 SINGLE VOLTAGE |
| Element Connection Style | TERMINAL SCREW |
| Terminal Box Environmental Protection | STANDARD |
| Mounting Method Style | SCREW PLUG OR BUSHING TYPE MOUNTING FACILITY |
| Nominal Thread Size | 2.000 INCHES MOUNTING FACILITY IN |
| Heat Quantity | 1 |
| Watt Density Rating | 55.0 PER SQUARE INCH SINGLE VOLTAGE |
| Element Radiation Spectrum | NONINFRARED |
| Material | STEEL CORROSION RESISTING SHEATH |
| Thread Series Designator | NPT MOUNTING FACILITY |
| Thread Quantity | 11.5 PER INCH MOUNTING FACILITY |
| Element Quantity | 2 |
| 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 |
|---|---|
| MP3502 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
NSN 4520-01-124-3653 is a Heating Element,electrical,immer, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-124-3653 has 1 manufacturer part number on file: MP3502 (Lockheed Martin Corporation Div Rms).
Key specifications for MP3502: Phase: NOT RATED SINGLE VOLTAGE; Terminal Quantity: 4; Length: 6.875 INCHES NOMINAL IN; Voltage in Volts and Current Type: 120.0 AC OR 240.0 AC SINGLE VOLTAGE. 17 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.