The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-442-2691, 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 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4520-01-442-2691 |
| Primary Part Number | 393-500174-001 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 1 |
| Length | 24.420 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 440.0 AC ALL VOLTAGES |
| Body Style | TUBULAR, SINGLE COIL DOUBLE TERMINALS |
| Maximum Wattage Rating in Watts | 2300.0 ALL VOLTAGES |
| Terminal Length | 2.500 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN |
| Element Connection Style | WIRE LEAD |
| Heat Quantity | 1 |
| Element Radiation Spectrum | NONINFRARED |
| 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 |
|---|---|
| 393-500174-001 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| 5599422-1 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
NSN 4520-01-442-2691 is a Heating Element,electrical,nonim, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-442-2691 has 1 manufacturer part number on file: 393-500174-001 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
Key specifications for 393-500174-001: Frequency in Hertz: 60.0; Terminal Quantity: 1; Length: 24.420 INCHES NOMINAL IN; Voltage in Volts and Current Type: 440.0 AC ALL VOLTAGES. 11 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.