The Heater,space, cataloged under National Stock Number 4520-01-520-3242, 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 Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4520-01-520-3242 |
| Primary Part Number | AT3500.1 |
| Item Name | Heater,space |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc |
| Status | ACTIVE |
| Heat Delivery Rate | 12000.0 BRITISH THERMAL UNIT |
| Current Type | DC |
| Voltage in Volts | 12.0 |
| Fuel Type | DIESEL FUEL OIL |
| Height | 425.0 MILLIMETERS NOMINAL MM |
| Depth | 130.0 MILLIMETERS NOMINAL MM |
| Width | 130.0 MILLIMETERS NOMINAL MM |
| Ignition Method | ELECTRODE |
| Fuel Feed Method | EXTERNAL PUMP |
| Heating Element Type | BURNER |
| Current Rating in Amps | 1.0 |
| Operating Control Type | 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 |
|---|---|
| AT3500.1 | Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc (USA) |
| Reference | Meaning |
|---|---|
| AT3500.1 | 3/9 Design control — primary reference Webasto Thermosystems Inc |
NSN 4520-01-520-3242 is a Heater,space, manufactured by Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-520-3242 has 1 manufacturer part number on file: AT3500.1 (Webasto Thermo & Comfort North America, Inc. Div Webasto Product North America, Inc).
Key specifications for AT3500.1: Heat Delivery Rate: 12000.0 BRITISH THERMAL UNIT; Current Type: DC; Voltage in Volts: 12.0; Fuel Type: DIESEL FUEL OIL. 12 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.