The Air Conditioner, cataloged under National Stock Number 4120-01-166-7741, is classified within Federal Supply Class 4120 (Air Conditioning Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Carrier Corp. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4120-01-166-7741 |
| Primary Part Number | 90MA |
| Item Name | Air Conditioner |
| FSC / FSG | 4120 / 41 — Air Conditioning Equipment |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Phase | THREE |
| Power Source | ELECTRIC MOTOR |
| Frequency Rating | 60.0 HERTZ NOMINAL |
| Voltage Rating | 440.0 VOLTS NOMINAL |
| 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 |
|---|---|
| 90MA406-631 | Carrier Corp (USA) |
| 90MA PRIMARY | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| 90MA506-631 | 5/9 Secondary reference Carrier Corp |
| 50BW012-600 | C/1 Advisory reference — outside the item-of-supply concept Carrier Corp |
| 50BW012-601 | 5/9 Secondary reference Carrier Corp |
NSN 4120-01-166-7741 is a Air Conditioner, manufactured by Carrier Corp, classified under FSC 4120, Air Conditioning Equipment. Status: active.
NSN 4120-01-166-7741 has 2 manufacturer part numbers on file: 90MA406-631 (Carrier Corp), 90MA (Carrier Corp).
Key specifications for 90MA: Phase: THREE; Power Source: ELECTRIC MOTOR; Frequency Rating: 60.0 HERTZ NOMINAL; Voltage Rating: 440.0 VOLTS NOMINAL. 4 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.