The Heater,convection,steam-Hot Wate, cataloged under National Stock Number 4520-00-271-9901, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government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 | 4520-00-271-9901 |
| Item Name | Heater,convection,steam-Hot Wate |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Heat Delivery Rate | 1700.0 BRITISH THERMAL UNIT |
| Heat Medium Type | HOT WATER |
| Inclosure Material | STEEL |
| Heat Outlet Quantity | 1 |
| Heat Discharge Outlet Type | STATIONARY |
| Heat Delivery Direction | VERTICAL |
| Height | 20.000 INCHES NOMINAL IN |
| Maximum Pressure Limit | 35.0 POUNDS PER SQUARE INCH GAGE LBS |
| Depth | 4.000 INCHES NOMINAL IN |
| Width | 10.500 INCHES NOMINAL IN |
| Heat Directing Device | DIRECTIONAL GRILLE |
| Mounting Type | FLOOR-WALL |
| Heating Element Type | HOT WATER COIL AND 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 |
|---|---|
| NSTDSIZE2 | 5/9 Secondary reference Modine Mfg Co |
| NSTDSIZE2 | C/1 Advisory reference — outside the item-of-supply concept Modine Manufacturing Co |
| 0-2827-799PC2 | C/1 Advisory reference — outside the item-of-supply concept Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters |
| M3117 CLASS 1 SIZE 2 | 2/2 Government specification standardization U.S. Government activity |
| MIL-H-3117 | 4/1 Identification reference U.S. Government activity |
NSN 4520-00-271-9901 is a Heater,convection,steam-Hot Wate, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
12 possible matches (shared part number, not a government interchangeability claim): 4520-00-271-9902, 4520-00-273-1126, 4520-00-273-1128. Verify interchangeability with system specifications before substitution.
Key specifications for 4520-00-271-9901: Heat Delivery Rate: 1700.0 BRITISH THERMAL UNIT; Heat Medium Type: HOT WATER; Inclosure Material: STEEL; Heat Outlet Quantity: 1. 13 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.