The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-025-4867, 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 Valad Electric Heating Corp.. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-025-4867 |
| Primary Part Number | VDH-56B |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Valad Electric Heating Corp. |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Terminal Quantity | 2 |
| Length | 17.000 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 440.0 AC SINGLE VOLTAGE |
| Body Style | STRIP, FINNED |
| Hole or Slot Quantity | 4 |
| Flange Thickness | 0.109 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.375 INCHES NOMINAL IN |
| Maximum Wattage Rating in Watts | 1800.0 SINGLE VOLTAGE |
| Terminal Length | 0.750 INCHES NOMINAL IN |
| Mounting Facility Length | 2.000 INCHES NOMINAL IN |
| Element Connection Style | STUD TYPE |
| Effective Heating Length | 17.500 INCHES NOMINAL IN |
| Mounting Method Style | FLANGE TYPE MOUNTING FACILITY |
| Nominal Thread Size | 0.164 INCHES STUD IN |
| Heat Quantity | 1 |
| Terminal Arrangement Style | PARALLEL AT CENTER |
| Nondefinitive Spec/std Data | 2 TYPE |
| Element Radiation Spectrum | NONINFRARED |
| Width | 2.000 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.375 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING SHEATH |
| Material | NICKEL ALLOY E RESISTANCE WIRE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD |
| Mounting Facility Width | 2.000 INCHES NOMINAL IN |
| Thread Quantity | 32.0 PER INCH STUD |
| Hole Diameter | 0.151 INCHES NOMINAL IN |
| 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 |
|---|---|
| VDH-56B PRIMARY | Valad Electric Heating Corp. (USA) |
| VDH-256B PRIMARY | Valad Electric Heating Corp. (USA) |
| 67-205A2-2 | Valad Electric Heating Corp. (USA) |
| Reference | Meaning |
|---|---|
| MIL-H-22577 | 4/1 Identification reference U.S. Government activity |
NSN 4520-01-025-4867 is a Heating Element,electrical,nonim, manufactured by Valad Electric Heating Corp., classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-025-4867 has 3 manufacturer part numbers on file: VDH-56B (Valad Electric Heating Corp.), VDH-256B (Valad Electric Heating Corp.), 67-205A2-2 (Valad Electric Heating Corp.).
Key specifications for VDH-56B: Phase: SINGLE SINGLE VOLTAGE; Terminal Quantity: 2; Length: 17.000 INCHES NOMINAL IN; Voltage in Volts and Current Type: 440.0 AC SINGLE VOLTAGE. 28 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.