The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-339-0844, 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 Watlow Electric Manufacturing Co Dba Watlow. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4520-01-339-0844 |
| Primary Part Number | K00501881A |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Watlow Electric Manufacturing Co Dba Watlow |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 400.0 |
| Terminal Quantity | 2 |
| Length | 1.800 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 50.0 AC SINGLE VOLTAGE |
| Body Style | STANDARD ELEMENT |
| Maximum Wattage Rating in Watts | 49.95 SINGLE VOLTAGE |
| Terminal Length | 24.000 INCHES NOMINAL IN |
| Element Connection Style | WIRE LEAD |
| Heat Quantity | 1 |
| Watt Density Rating | 55.5 PER SQUARE INCH SINGLE VOLTAGE |
| Element Radiation Spectrum | NONINFRARED |
| Width | 0.500 INCHES NOMINAL IN |
| Material | NICKEL ALLOY RESISTANCE WIRE |
| Material | PLASTIC POLYAMIDE NYLON RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION |
| 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 |
|---|---|
| 717801824-005 | Lockheed Martin Corporation (USA) |
| K00501881A PRIMARY | Watlow Electric Manufacturing Co Dba Watlow (USA) |
| HK15194 PRIMARY | Minco Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 717801824 | 7/1 Vendor item drawing reference Lockheed Martin Corporation |
NSN 4520-01-339-0844 is a Heating Element,electrical,nonim, manufactured by Watlow Electric Manufacturing Co Dba Watlow, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-339-0844 has 3 manufacturer part numbers on file: 717801824-005 (Lockheed Martin Corporation), K00501881A (Watlow Electric Manufacturing Co Dba Watlow), HK15194 (Minco Products Inc).
Key specifications for K00501881A: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 400.0; Terminal Quantity: 2; Length: 1.800 INCHES NOMINAL IN. 16 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.