The Heating Element, cataloged under National Stock Number 4520-01-602-5269, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-602-5269 |
| Primary Part Number | AD31985-6 |
| Item Name | Heating Element |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| 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 |
|---|---|
| AD31985-6 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| A1438 | C/1 Advisory reference — outside the item-of-supply concept Thermal Circuits, Inc. Dba Thermal Circuits Inc |
| AD31985-06 | 5/9 Secondary reference Hamilton Sundstrand Corporation Dba Collins Aerospace |
NSN 4520-01-602-5269 is a Heating Element, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-602-5269 has 1 manufacturer part number on file: AD31985-6 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
2 possible matches (shared part number, not a government interchangeability claim): 8455-01-647-8935, 8455-01-700-3481. Verify interchangeability with system specifications before substitution.
Key specifications for AD31985-6: End Item Identification: UPDATE. 0 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.