The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-221-8836, 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 Smith a O Water Products Co Div of a O Smith Corp. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-221-8836 |
| Primary Part Number | 100108977 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Smith a O Water Products Co Div of a O Smith Corp |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Length | 15.500 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 480.0 AC SINGLE VOLTAGE |
| Body Style | TUBULAR, SCREW TYPE |
| Maximum Wattage Rating in Watts | 6000.0 SINGLE VOLTAGE |
| Effective Heating Length | 14.000 INCHES NOMINAL IN |
| Mounting Method Style | SCREW PLUG OR BUSHING TYPE MOUNTING FACILITY |
| Heat Quantity | 1 |
| Heat Control Type | THERMOSTAT |
| Element Radiation Spectrum | NONINFRARED |
| Material | NICKEL ALLOY AND COPPER ALLOY 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 |
| Part Number | Manufacturer |
|---|---|
| 100108977 | Smith a O Water Products Co Div of a O Smith Corp (USA) |
| Reference | Meaning |
|---|---|
| 9002875005 | 5/9 Secondary reference Smith a O Water Products Co Div of a O Smith Corp |
| 23783-12 | 3/9 Design control — primary reference Smith a O Water Products Co Div of a O Smith Corp |
NSN 4520-01-221-8836 is a Heating Element,electrical,immer, manufactured by Smith a O Water Products Co Div of a O Smith Corp, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-221-8836 has 1 manufacturer part number on file: 100108977 (Smith a O Water Products Co Div of a O Smith Corp).
Key specifications for 100108977: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Length: 15.500 INCHES NOMINAL IN; Voltage in Volts and Current Type: 480.0 AC SINGLE VOLTAGE. 13 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.