The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-328-1285, 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 Mcmaster-Carr Supply Co. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-328-1285 |
| Primary Part Number | 3656K111 |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Length | 6.250 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 120.0 AC SINGLE VOLTAGE |
| Body Style | SCREW TYPE |
| Nominal Thread Size | 1.250 INCHES SCREW IN |
| Heat Quantity | 1 |
| Watt Density Rating | 60.0 PER SQUARE INCH SINGLE VOLTAGE |
| Thermostat Range | +60.0 TO 250.0 FAHRENHEIT DEGF |
| Heat Control Type | THERMOSTAT |
| Material | COPPER SHEATH |
| Thread Series Designator | NPT SCREW |
| 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 |
|---|---|
| 3656K111 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 3656K31 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
NSN 4520-01-328-1285 is a Heating Element,electrical,immer, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-328-1285 has 1 manufacturer part number on file: 3656K111 (Mcmaster-Carr Supply Co).
Key specifications for 3656K111: Phase: SINGLE SINGLE VOLTAGE; Length: 6.250 INCHES NOMINAL IN; Voltage in Volts and Current Type: 120.0 AC SINGLE VOLTAGE; Body Style: SCREW TYPE. 12 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.