The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-046-3277, 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 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-046-3277 |
| Primary Part Number | 23721-12 |
| 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 |
| Terminal Quantity | 2 |
| Length | 16.000 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 480.0 AC SINGLE VOLTAGE |
| Body Style | TUBULAR, FLANGED |
| Hole or Slot Quantity | 4 |
| Flange Thickness | 0.255 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.812 INCHES NOMINAL IN |
| Maximum Wattage Rating in Watts | 6000.0 SINGLE VOLTAGE |
| Element Connection Style | TERMINAL SCREW |
| Mounting Method Style | FLANGE TYPE MOUNTING FACILITY |
| Heat Quantity | 1 |
| Element Radiation Spectrum | NONINFRARED |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.812 INCHES NOMINAL IN |
| Material | COPPER SHEATH |
| Mounting Facility Width | 2.500 INCHES NOMINAL IN |
| Hole Diameter | 0.400 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 |
|---|---|
| 23721-12 PRIMARY | Smith a O Water Products Co Div of a O Smith Corp (USA) |
NSN 4520-01-046-3277 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 4520-01-046-3277 has 1 manufacturer part number on file: 23721-12 (Smith a O Water Products Co Div of a O Smith Corp).
Key specifications for 23721-12: Phase: SINGLE SINGLE VOLTAGE; Terminal Quantity: 2; Length: 16.000 INCHES NOMINAL IN; Voltage in Volts and Current Type: 480.0 AC SINGLE VOLTAGE. 18 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.