The Heater,water,electric, cataloged under National Stock Number 4520-01-293-1394, 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 Smith a O Water Products Co Div of a O Smith Corp. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4520-01-293-1394 |
| Primary Part Number | CMC-6 |
| Item Name | Heater,water,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Smith a O Water Products Co Div of a O Smith Corp |
| Status | ACTIVE |
| Thermostatic Switch | NOT INCLUDED |
| Water Outlet Connection Thread Size and Series/type Designator | 3/4-14 NPT |
| Water Outlet Connection Quantity | 1 |
| Voltage in Volts and Current Type | 230.0 AC |
| Capacity | 5.0 GALLONS TANK |
| Heating Capacity Per Hour | 62.0 GALLONS |
| Water Inlet Connection Quantity | 1 |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Water Inlet Connection Thread Size and Series/type Designator | 3/4-14 NPT |
| Insulated Feature | INCLUDED |
| Attachment Device | NOT INCLUDED |
| Heating Element Type | SINGLE |
| Temp Rise Per Hour | 40.0 FAHRENHEIT DEGF |
| 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 |
|---|---|
| CMC-6 | Smith a O Water Products Co Div of a O Smith Corp (USA) |
| Reference | Meaning |
|---|---|
| CM-6 | 3/9 Design control — primary reference Smith a O Water Products Co Div of a O Smith Corp |
| CM-6 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4520-01-293-1394 is a Heater,water,electric, manufactured by Smith a O Water Products Co Div of a O Smith Corp, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-293-1394 has 1 manufacturer part number on file: CMC-6 (Smith a O Water Products Co Div of a O Smith Corp).
2 possible matches (shared part number, not a government interchangeability claim): 5998-01-551-7962, 6665-01-650-8020. Verify interchangeability with system specifications before substitution.
Key specifications for CMC-6: Thermostatic Switch: NOT INCLUDED; Overall Height: 16.000 INCHES NOMINAL IN; Water Outlet Connection Thread Size and Series/type Designator: 3/4-14 NPT; Water Outlet Connection 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.