The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-487-0997, 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 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4520-01-487-0997 |
| Primary Part Number | 285-054385-025MKL |
| Item Name | Heating Element,electrical,nonim |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Length | 13.630 INCHES MINIMUM AND 13.870 INCHES MAXIMUM IN |
| Voltage in Volts and Current Type | 240.0 DC SINGLE VOLTAGE |
| Body Style | STRIP ELEMENT |
| Maximum Wattage Rating in Watts | 750.0 SINGLE VOLTAGE |
| Element Connection Style | STUD TYPE |
| Terminal Arrangement Style | THREE AT ONE END - FOR THREE HEAT |
| Width | 1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN |
| Element Quantity | 3 |
| 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 |
|---|---|
| 285-054385-025MKL PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| 8266-1 | 7/9 Vendor item drawing reference Eaton Aviation Corporation |
| 8266-1 | C/1 Advisory reference — outside the item-of-supply concept Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
NSN 4520-01-487-0997 is a Heating Element,electrical,nonim, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-487-0997 has 1 manufacturer part number on file: 285-054385-025MKL (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-524-3667. Verify interchangeability with system specifications before substitution.
Key specifications for 285-054385-025MKL: Length: 13.630 INCHES MINIMUM AND 13.870 INCHES MAXIMUM IN; Voltage in Volts and Current Type: 240.0 DC SINGLE VOLTAGE; Body Style: STRIP ELEMENT; Maximum Wattage Rating in Watts: 750.0 SINGLE VOLTAGE. 8 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.