The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-231-9631, 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 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4520-01-231-9631 |
| Primary Part Number | 571X-69581 |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Indeeco Llc Dba Indeeco |
| Status | ACTIVE |
| Phase | SINGLE SINGLE VOLTAGE |
| Frequency in Hertz | 60.0 |
| Terminal Quantity | 2 |
| Voltage in Volts and Current Type | 440.0 AC SINGLE VOLTAGE |
| Element Connection Style | HERMETICALLY SEALED STUD |
| Effective Heating Length | 14.000 INCHES NOMINAL IN |
| Nominal Thread Size | 0.190 INCHES STUD IN |
| Heat Quantity | 1 |
| Element Radiation Spectrum | NONINFRARED |
| Material | NICKEL ALLOY SHEATH |
| Thread Series Designator | UNF STUD |
| Thread Quantity | 32 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 |
|---|---|
| 571X-69581 | Indeeco Llc Dba Indeeco (USA) |
| Reference | Meaning |
|---|---|
| 69581-03007 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 571X-69581-03007 | 3/9 Design control — primary reference Indeeco Llc Dba Indeeco |
NSN 4520-01-231-9631 is a Heating Element,electrical,nonim, manufactured by Indeeco Llc Dba Indeeco, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-231-9631 has 1 manufacturer part number on file: 571X-69581 (Indeeco Llc Dba Indeeco).
1 possible match (shared part number, not a government interchangeability claim): 4520-01-562-9144. Verify interchangeability with system specifications before substitution.
Key specifications for 571X-69581: Phase: SINGLE SINGLE VOLTAGE; Frequency in Hertz: 60.0; Terminal Quantity: 2; Voltage in Volts and Current Type: 440.0 AC SINGLE VOLTAGE. 13 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.