The Heater,water,electric, cataloged under National Stock Number 4520-00-552-3716, 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 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-552-3716 |
| Primary Part Number | 3570K32 |
| Item Name | Heater,water,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Thermostatic Switch | INCLUDED |
| Water Outlet Connection Thread Size and Series/type Designator | 0.750-14 NPT |
| Water Outlet Connection Quantity | 1 |
| Phase | SINGLE |
| Heating Element Wattage Rating | 4500.000 LOWER AND 4500.000 UPPER |
| Frequency in Hertz | 60.0 |
| Voltage in Volts and Current Type | 240.0 AC |
| Overall Diameter | 21.000 INCHES NOMINAL IN |
| Capacity | 50.0 GALLONS TANK |
| Heating Capacity Per Hour | 20.0 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 | 0.750-14 NPT |
| Insulated Feature | INCLUDED |
| Attachment Device | NOT INCLUDED |
| Heating Element Type | DOUBLE |
| Temp Rise Per Hour | 90.0 FAHRENHEIT DEGF |
| Switch Type | SINGLE THROW |
| Surface Treatment | ENAMEL OUTSIDE |
| Surface Treatment | GLASS FIBER INSIDE |
| Material | STEEL |
| Furnished Items and Quantity | DRAIN VALVE 1; ANODE ROD 1 |
| 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 |
|---|---|
| 3570K32 | Mcmaster-Carr Supply Co (USA) |
| 3WA71 | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| Reference | Meaning |
|---|---|
| 6E722 | 5/9 Secondary reference W.w. Grainger, Inc. Div Government Sales Division |
| 81V52D-B | 5/9 Secondary reference Rheem Mfg Co Div of City Investing Co |
| M-I-50S5DS | 5/9 Secondary reference U.S. Government activity |
| M250S6DS | 3/2 Design control — primary reference U.S. Government activity |
| 3E120 | 5/9 Secondary reference W.w. Grainger, Inc. Div Government Sales Division |
NSN 4520-00-552-3716 is a Heater,water,electric, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-552-3716 has 2 manufacturer part numbers on file: 3570K32 (Mcmaster-Carr Supply Co), 3WA71 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 3570K32: Thermostatic Switch: INCLUDED; Overall Height: 50.000 INCHES NOMINAL IN; Water Outlet Connection Thread Size and Series/type Designator: 0.750-14 NPT; Water Outlet Connection Quantity: 1. 22 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.