The Heater,water,steam-Hot Water Hea, cataloged under National Stock Number 4520-01-040-7723, 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 Naval Inventory Control Point Mechanicsburg. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-040-7723 |
| Primary Part Number | 1012BR |
| Item Name | Heater,water,steam-Hot Water Hea |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Water Outlet Connection Thread Size and Series/type Designator | 2-1/2 IN.-8 NPT IN |
| Water Outlet Connection Quantity | 1 |
| Capacity | 32.0 GALLONS TANK |
| Mounting Position | VERTICAL |
| Heating Capacity Per Hour | 77.000 GALLONS |
| Water Inlet Connection Quantity | 1 |
| Outside Diameter | 17.000 INCHES NOMINAL IN |
| Water Inlet Connection Thread Size and Series/type Designator | 1-1/4 IN.-11-1/2 NPT IN |
| Heating Coil Outlet Connection Thread Size and Series/type Designator | 1 IN.-11-1/2 NPT IN |
| Heating Coil Surface Area | 60.000 SQUARE FEET |
| Material | COPPER AND STEEL |
| Heating Coil Inlet Connection Thread Size and Series/type Designator | 2 IN.-11-1/2 NPT IN |
| 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 |
|---|---|
| 1012BR | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 1012BR | 5/9 Secondary reference U.S. Government activity |
| SA-483 | D/9 Drawing number reference only U.S. Government activity |
| SW1B12STYLE110421 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4520-01-040-7723 is a Heater,water,steam-Hot Water Hea, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-040-7723 has 1 manufacturer part number on file: 1012BR (Naval Inventory Control Point Mechanicsburg).
Key specifications for 1012BR: Water Outlet Connection Thread Size and Series/type Designator: 2-1/2 IN.-8 NPT IN; Water Outlet Connection Quantity: 1; Capacity: 32.0 GALLONS TANK; Mounting Position: VERTICAL. 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.