The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-369-3513, 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 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4520-01-369-3513 |
| Primary Part Number | ARMTS-2255E2 480V 2.5KW 1PH |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Length | 9.562 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 480.0 AC SINGLE VOLTAGE |
| Body Style | TUBULAR, SCREW TYPE |
| Maximum Wattage Rating in Watts | 2500.0 SINGLE VOLTAGE |
| Unpackaged Unit Width | 5.750 INCHES NOMINAL IN |
| Effective Heating Length | 9.562 INCHES NOMINAL IN |
| Terminal Box Environmental Protection | EXPLOSION RESISTANT AND MOISTURE RESISTANT |
| Mounting Method Style | SCREW PLUG OR BUSHING TYPE MOUNTING FACILITY |
| Nominal Thread Size | 2.000 INCHES MOUNTING FACILITY IN |
| Heat Quantity | 3 |
| Watt Density Rating | 48.0 PER SQUARE INCH SINGLE VOLTAGE |
| Unpackaged Unit Height | 7.875 INCHES NOMINAL IN |
| Thermostat Range | +60.0 TO 250.0 FAHRENHEIT DEGF |
| Heat Control Type | THERMOSTAT |
| Element Radiation Spectrum | NONINFRARED |
| Material | STEEL CORROSION RESISTING SHEATH |
| Thread Series Designator | NPT MOUNTING FACILITY |
| Thread Quantity | 11-1/2 PER INCH MOUNTING FACILITY |
| Element Quantity | 2 |
| 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 |
|---|---|
| ARMTS-2255E2 480V 2.5KW 1PH PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| 184250 | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| ARMTS-2 | 5/9 Secondary reference Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
NSN 4520-01-369-3513 is a Heating Element,electrical,immer, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-369-3513 has 2 manufacturer part numbers on file: ARMTS-2255E2 480V 2.5KW 1PH (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 184250 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
Key specifications for ARMTS-2255E2 480V 2.5KW 1PH: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Length: 9.562 INCHES NOMINAL IN; Voltage in Volts and Current Type: 480.0 AC SINGLE VOLTAGE. 21 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.