The Adapter,air Conditioning-Heating, cataloged under National Stock Number 4520-01-003-1458, 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 Drs Environmental Systems Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-003-1458 |
| Primary Part Number | TDF3012 |
| Item Name | Adapter,air Conditioning-Heating |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Drs Environmental Systems Inc |
| Status | ACTIVE |
| FSC Application Data | HEATING EQUIPMENT |
| 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 |
|---|---|
| TDF3012 PRIMARY | Drs Environmental Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| TDF3012 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4520-01-003-1458 is a Adapter,air Conditioning-Heating, manufactured by Drs Environmental Systems Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-003-1458 has 1 manufacturer part number on file: TDF3012 (Drs Environmental Systems Inc).
Key specifications for TDF3012: FSC Application Data: HEATING EQUIPMENT; Special Features: ADAPTER,DUCT; End Item Identification: HEATER,DUCT,PORTABLE,BT400&43 SERIES,TYPE H&1. 1 specification is 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.