The Heater,space, cataloged under National Stock Number 4520-01-258-8043, 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 Mcmaster-Carr Supply Co. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-258-8043 |
| Primary Part Number | 1744K4 |
| Item Name | Heater,space |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Heat Delivery Rate | 60000.0 BRITISH THERMAL UNIT |
| Fuel Type | FUEL OIL AND KEROSENE |
| Height | 20.000 INCHES NOMINAL IN |
| Depth | 34.000 INCHES NOMINAL IN |
| Width | 16.000 INCHES NOMINAL IN |
| Ignition Method | GLOW PLUG |
| Mounting Type | WHEEL |
| Fuel Feed Method | EXTERNAL PUMP |
| Heating Element Type | BURNER |
| 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 |
|---|---|
| 1744K4 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 1746K7 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
| 1744K23 | 3/9 Design control — primary reference Mcmaster-Carr Supply Co |
| 1746K7 | 5/9 Secondary reference Precision Welding and Fabrication |
NSN 4520-01-258-8043 is a Heater,space, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-258-8043 has 1 manufacturer part number on file: 1744K4 (Mcmaster-Carr Supply Co).
Key specifications for 1744K4: Heat Delivery Rate: 60000.0 BRITISH THERMAL UNIT; Fuel Type: FUEL OIL AND KEROSENE; Height: 20.000 INCHES NOMINAL IN; Depth: 34.000 INCHES NOMINAL IN. 10 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.