The Heater,space,electric, cataloged under National Stock Number 4520-01-346-1037, 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 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-346-1037 |
| Primary Part Number | 004-620059-013 |
| Item Name | Heater,space,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Maximum Air Flow Rate | 1330.0 CUBIC FEET PER MINUTE |
| Speed Adjustments | SINGLE SPEED |
| Heat Delivery Rate | 56479.5 BRITISH THERMAL UNIT |
| Phase | THREE |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Inclosure Material | STEEL |
| Quantity | 1 |
| Voltage in Volts | 440.0 |
| Heat Outlet Quantity | 1 |
| Heat Discharge Outlet Type | ADJUSTABLE |
| Heat Delivery Direction | HORIZONTAL OR VERTICAL |
| Height | 22.250 INCHES NOMINAL IN |
| Air Circulation Device | PROPELLER FAN |
| Surface Treatment | CHROMATE ZINC |
| Depth | 14.500 INCHES NOMINAL IN |
| Width | 17.120 INCHES NOMINAL IN |
| Prime Mover Type | ELECTRIC MOTOR |
| Circulated Air Type | HEATED |
| Heat Directing Device | ADJUSTABLE LOUVER |
| Mounting Type | CEILING SUSPENDED OR WALL SUSPENDED, ROOM INTERIOR |
| Heating Element Type | ELECTRIC NONIMMERSION |
| Current Rating in Amps | 21.65 |
| Operating Control Type | HAND SWITCH AND THERMOSTATIC |
| 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 |
|---|---|
| 004-620059-013 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| 004-620059-000 | D/9 Drawing number reference only Chromalox Inc |
NSN 4520-01-346-1037 is a Heater,space,electric, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-346-1037 has 1 manufacturer part number on file: 004-620059-013 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4520-01-346-2718, 4520-01-346-3139. Verify interchangeability with system specifications before substitution.
Key specifications for 004-620059-013: Maximum Air Flow Rate: 1330.0 CUBIC FEET PER MINUTE; Speed Adjustments: SINGLE SPEED; Heat Delivery Rate: 56479.5 BRITISH THERMAL UNIT; Phase: THREE. 24 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.