The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-503-4074, 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 Indeeco Llc Dba Indeeco. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-503-4074 |
| Primary Part Number | 571X-67891-11307 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Indeeco Llc Dba Indeeco |
| Status | ACTIVE |
| Phase | THREE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 2 |
| Length | 112.000 INCHES MINIMUM AND 114.000 INCHES MAXIMUM IN |
| Voltage in Volts and Current Type | 440.0 AC SINGLE VOLTAGE |
| Body Style | FINNED, TUBULAR, U SHAPED |
| Maximum Wattage Rating in Watts | 183000.0 SINGLE VOLTAGE |
| Terminal Length | 2.125 INCHES NOMINAL IN |
| Element Connection Style | STUD TYPE |
| Terminal Box Environmental Protection | EXPLOSION RESISTANT AND MOISTURE RESISTANT |
| Nominal Thread Size | 0.250 INCHES STUD IN |
| Heat Quantity | 1 |
| Element Radiation Spectrum | NONINFRARED |
| Material | NICKEL ALLOY SHEATH |
| Material | MANGANESE RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION |
| Material | NICKEL ALLOY B RESISTANCE WIRE |
| Thread Series Designator | UNF STUD |
| Thread Quantity | 28.0 PER INCH STUD |
| Element Quantity | 21 |
| 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 |
|---|---|
| 571X-67891-11307 PRIMARY | Indeeco Llc Dba Indeeco (USA) |
| 571X-67891 | Indeeco Llc Dba Indeeco (USA) |
| Reference | Meaning |
|---|---|
| 210-19581-41 REV A ITEM 8 | D/9 Drawing number reference only Indeeco Llc Dba Indeeco |
NSN 4520-01-503-4074 is a Heating Element,electrical,nonim, manufactured by Indeeco Llc Dba Indeeco, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-503-4074 has 2 manufacturer part numbers on file: 571X-67891-11307 (Indeeco Llc Dba Indeeco), 571X-67891 (Indeeco Llc Dba Indeeco).
Key specifications for 571X-67891-11307: Phase: THREE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Terminal Quantity: 2; Length: 112.000 INCHES MINIMUM AND 114.000 INCHES MAXIMUM IN. 19 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.