The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-009-4404, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4520-00-009-4404 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT BOMBING FIRE CONTROL EQUIPMENT |
| Voltage in Volts and Current Type | 25.0 DC SINGLE VOLTAGE |
| Body Style | STRIP ELEMENT |
| Maximum Wattage Rating in Watts | 7.9 SINGLE VOLTAGE |
| Element Connection Style | WIRE LEAD |
| Material Document and Classification | QQ-R-175,CMPSN E,BRIGHT ANNEALED FED SPEC SINGLE MATERIAL RESPONSE RESISTANCE WIRE |
| Element Radiation Spectrum | NONINFRARED |
| Material | NICKEL ALLOY RESISTANCE WIRE |
| 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 |
|---|---|
| 3178756 | 3/2 Design control — primary reference U.S. Government activity |
| 90-3178756 | 5/9 Secondary reference Spaceonics Industries |
NSN 4520-00-009-4404 is a Heating Element,electrical,nonim, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4720-00-034-8511. Verify interchangeability with system specifications before substitution.
Key specifications for 4520-00-009-4404: FSC Application Data: AIRCRAFT BOMBING FIRE CONTROL EQUIPMENT; Voltage in Volts and Current Type: 25.0 DC SINGLE VOLTAGE; Body Style: STRIP ELEMENT; Maximum Wattage Rating in Watts: 7.9 SINGLE VOLTAGE. 9 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.