The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-174-0035, 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 Westinghouse Electric Corp. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-174-0035 |
| Primary Part Number | 21B6765G1 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Terminal Quantity | 2 |
| Voltage in Volts and Current Type | 115.0 DC SINGLE VOLTAGE |
| Body Style | TUBULAR, SINGLE COIL, DOUBLE TERMINALS |
| Maximum Wattage Rating in Watts | 400.0 SINGLE VOLTAGE |
| Terminal Length | 0.563 INCHES NOMINAL IN |
| Element Connection Style | STUD TYPE |
| Mounting Method Style | TERMINAL MOUNTED |
| Nominal Thread Size | 0.112 INCHES STUD IN |
| Heat Quantity | 1 |
| Minimum Clearance Distance | 8.437 INCHES NOMINAL IN |
| Element Radiation Spectrum | NONINFRARED |
| Material | STEEL SHEATH |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD |
| Thread Quantity | 40.0 PER INCH STUD |
| Element Quantity | 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 |
|---|---|
| 21B6765G1 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| AB-56 | 3/9 Design control — primary reference Singer Co the Climate Control Div |
NSN 4520-00-174-0035 is a Heating Element,electrical,nonim, manufactured by Westinghouse Electric Corp, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-174-0035 has 1 manufacturer part number on file: 21B6765G1 (Westinghouse Electric Corp).
1 possible match (shared part number, not a government interchangeability claim): 5320-00-850-3267. Verify interchangeability with system specifications before substitution.
Key specifications for 21B6765G1: Terminal Quantity: 2; Voltage in Volts and Current Type: 115.0 DC SINGLE VOLTAGE; Body Style: TUBULAR, SINGLE COIL, DOUBLE TERMINALS; Maximum Wattage Rating in Watts: 400.0 SINGLE VOLTAGE. 15 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.