The Heater,space,electric, cataloged under National Stock Number 4520-01-251-3078, 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 Billows Electric Supply Company of Philadelphia, Inc. Dba Billows Electric Supply. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-251-3078 |
| Primary Part Number | AWH4404F |
| Item Name | Heater,space,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Billows Electric Supply Company of Philadelphia, Inc. Dba Billows Electric Supply |
| Status | ACTIVE |
| Heat Delivery Rate | 13650.0 BRITISH THERMAL UNIT |
| Current Type | AC |
| Voltage in Volts | 208.0 AND 240.0 |
| Air Circulation Device | PROPELLER FAN |
| Prime Mover Type | ELECTRIC MOTOR |
| Mounting Type | WALL RECESSED, ROOM INTERIOR |
| Heating Element Type | ELECTRIC NONIMMERSION |
| Current Rating in Amps | 14.5 AND 17.0 |
| Operating Control Type | HAND SWITCH |
| 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 |
|---|---|
| AWH4404F | Billows Electric Supply Company, Inc. (USA) |
| AWH4404F PRIMARY | Billows Electric Supply Company of Philadelphia, Inc. Dba Billows Electric Supply (USA) |
| Reference | Meaning |
|---|---|
| AWH-3404 | 5/9 Secondary reference Graybar Electric Company, Inc. Dba Graybar Electric |
| AWH-3404-1 | 3/9 Design control — primary reference Graybar Electric Company, Inc. Dba Graybar Electric |
| AWH-3404 | 5/9 Secondary reference Graybar Electric Company, Inc. Dba Graybar Electric |
NSN 4520-01-251-3078 is a Heater,space,electric, manufactured by Billows Electric Supply Company of Philadelphia, Inc. Dba Billows Electric Supply, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-251-3078 has 2 manufacturer part numbers on file: AWH4404F (Billows Electric Supply Company, Inc.), AWH4404F (Billows Electric Supply Company of Philadelphia, Inc. Dba Billows Electric Supply).
Key specifications for AWH4404F: Heat Delivery Rate: 13650.0 BRITISH THERMAL UNIT; Current Type: AC; Voltage in Volts: 208.0 AND 240.0; Air Circulation Device: PROPELLER FAN. 9 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.