The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-430-7328, 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 The Boeing Company Div Defense. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-430-7328 |
| Primary Part Number | 74B749032-1001 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 2 |
| Length | 11.000 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 120.0 AC SINGLE VOLTAGE |
| Body Style | TUBULAR, THREADED |
| Maximum Wattage Rating in Watts | 1000.0 SINGLE VOLTAGE |
| Element Connection Style | WIRE LEAD |
| Outside Diameter | 1.000 INCHES NOMINAL IN |
| Effective Heating Length | 11.000 INCHES NOMINAL IN |
| Element Radiation Spectrum | NONINFRARED |
| 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 |
|---|---|
| 74B749032-1001 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| HDC11790 | 3/9 Design control — primary reference Tempco Electric Heater Corporation |
| HDX16-1108CM | 5/9 Secondary reference Tempco Electric Heater Corporation |
| 74B749032 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 4520-01-430-7328 is a Heating Element,electrical,immer, manufactured by The Boeing Company Div Defense, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-430-7328 has 1 manufacturer part number on file: 74B749032-1001 (The Boeing Company Div Defense).
Key specifications for 74B749032-1001: Frequency in Hertz: 60.0; Terminal Quantity: 2; Length: 11.000 INCHES NOMINAL IN; Voltage in Volts and Current Type: 120.0 AC SINGLE VOLTAGE. 11 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.