The Heating Element,electrical,immer, cataloged under National Stock Number 4540-00-402-8121, is classified within Federal Supply Class 4540 (Waste Disposal 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4540-00-402-8121 |
| Primary Part Number | MT240A240V4000W |
| Item Name | Heating Element,electrical,immer |
| FSC / FSG | 4540 / 45 — Waste Disposal Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 4 |
| Length | 18.000 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 240.0 AC SINGLE VOLTAGE |
| Body Style | TUBULAR, SINGLE TERMINAL |
| Maximum Wattage Rating in Watts | 4000.0 SINGLE VOLTAGE |
| Terminal Length | 0.625 INCHES NOMINAL IN |
| Mounting Facility Length | 1.125 INCHES NOMINAL IN |
| Element Connection Style | TERMINAL LUG |
| Effective Heating Length | 18.000 INCHES NOMINAL IN |
| Terminal Box Environmental Protection | STANDARD |
| Mounting Method Style | SCREW PLUG OR BUSHING TYPE MOUNTING FACILITY |
| Heat Quantity | 1 |
| Watt Density Rating | 50.0 PER SQUARE INCH SINGLE VOLTAGE |
| Conduit Opening Size | 0.500 INCHES NOMINAL IN |
| Element Radiation Spectrum | NONINFRARED |
| Material | COPPER SHEATH |
| Material | CERAMIC RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION |
| Material | NICKEL ALLOY RESISTANCE WIRE |
| 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 | N |
| Part Number | Manufacturer |
|---|---|
| MT240A240V4000W PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
NSN 4540-00-402-8121 is a Heating Element,electrical,immer, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4540, Waste Disposal Equipment. Status: active.
NSN 4540-00-402-8121 has 1 manufacturer part number on file: MT240A240V4000W (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
Key specifications for MT240A240V4000W: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Terminal Quantity: 4; Length: 18.000 INCHES NOMINAL IN. 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.