The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-278-9778, 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 Hamilton Sundstrand Corporation Div Mission Systems. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4520-00-278-9778 |
| Primary Part Number | 99576 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Hamilton Sundstrand Corporation Div Mission Systems |
| Status | ACTIVE |
| Terminal Quantity | 2 |
| Body Style | STRIP ELEMENT |
| Maximum Wattage Rating in Watts | 75.0 SINGLE VOLTAGE |
| Mounting Method Style | BRACKET TYPE MOUNTING FACILITY |
| Heat Quantity | 1 |
| Width | 1.514 INCHES NOMINAL IN |
| Material | STEEL SHEATH |
| 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 4520-00-278-9778 is a Heating Element,electrical,nonim, manufactured by Hamilton Sundstrand Corporation Div Mission Systems, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-278-9778 has 2 manufacturer part numbers on file: EM99576 (E & M Equipment Co), 99576 (Hamilton Sundstrand Corporation Div Mission Systems).
1 possible match (shared part number, not a government interchangeability claim): 2815-01-097-6500. Verify interchangeability with system specifications before substitution.
Key specifications for 99576: Terminal Quantity: 2; Body Style: STRIP ELEMENT; Maximum Wattage Rating in Watts: 75.0 SINGLE VOLTAGE; Overall Length: 1.875 INCHES NOMINAL IN. 8 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.