The Heater,convection,steam-Hot Wate, cataloged under National Stock Number 4520-00-273-1126, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government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 | 4520-00-273-1126 |
| Item Name | Heater,convection,steam-Hot Wate |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Heat Delivery Rate | 6200.0 BRITISH THERMAL UNIT |
| Heat Medium Type | HOT WATER OR STEAM |
| Inclosure Material | STEEL |
| Height | 19.000 INCHES NOMINAL IN |
| Maximum Pressure Limit | 35.0 POUNDS PER SQUARE INCH GAGE LBS |
| Depth | 20.000 INCHES NOMINAL IN |
| Width | 5.875 INCHES NOMINAL IN |
| Mounting Type | CEILING SUSPENDED |
| Heating Element Type | HOT WATER COIL OR STEAM COIL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 6329453SZ6 | 5/9 Secondary reference Dunham-Bush, Inc. Dba Dunham-Bush Inc Commercial & Industrial |
| S3802-921624-6 | 3/2 Design control — primary reference U.S. Government activity |
| MIL-H-3117 | 4/1 Identification reference U.S. Government activity |
| NSTDSIZE6 | 5/9 Secondary reference Modine Mfg Co |
| 6329453G06 | 5/9 Secondary reference Dunham-Bush, Inc. Dba Dunham-Bush Inc Commercial & Industrial |
NSN 4520-00-273-1126 is a Heater,convection,steam-Hot Wate, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
10 possible matches (shared part number, not a government interchangeability claim): 4520-00-273-1128, 4520-00-273-1129, 4520-00-273-1132. Verify interchangeability with system specifications before substitution.
Key specifications for 4520-00-273-1126: Heat Delivery Rate: 6200.0 BRITISH THERMAL UNIT; Heat Medium Type: HOT WATER OR STEAM; Inclosure Material: STEEL; Height: 19.000 INCHES NOMINAL IN. 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.