The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-684-3903, 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 - Mitchel Field. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-684-3903 |
| Primary Part Number | 1007021 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 2 |
| Length | 4.125 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC SINGLE VOLTAGE |
| Body Style | STRIP ELEMENT |
| Hole or Slot Quantity | 2 |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 4.875 INCHES NOMINAL IN |
| Maximum Wattage Rating in Watts | 50.0 SINGLE VOLTAGE |
| Terminal Length | 24.000 INCHES NOMINAL IN |
| Element Connection Style | WIRE LEAD |
| Mounting Method Style | SLOT OR HOLE TYPE MOUNTING FACILITY |
| Heat Quantity | 1 |
| Terminal Arrangement Style | PARALLEL AT ONE END EXCEPT ON 3/4 AND 1 INCH WIDTH IN |
| Element Radiation Spectrum | NONINFRARED |
| Width | 1.625 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION |
| Material | NICKEL ALLOY D RESISTANCE WIRE |
| Hole Diameter | 0.218 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 |
| Part Number | Manufacturer |
|---|---|
| 1007021 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| 1981465 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 4520-00-684-3903 is a Heating Element,electrical,nonim, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-684-3903 has 1 manufacturer part number on file: 1007021 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for 1007021: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Terminal Quantity: 2; Length: 4.125 INCHES NOMINAL IN. 20 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.