The Air Conditioner, cataloged under National Stock Number 4120-01-077-6931, is classified within Federal Supply Class 4120 (Air Conditioning Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Walker Power Systems, Inc. Dba Tiernay Turbines. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4120-01-077-6931 |
| Primary Part Number | TM-18K-120-208-3-60 |
| Item Name | Air Conditioner |
| FSC / FSG | 4120 / 41 — Air Conditioning Equipment |
| Manufacturer | Walker Power Systems, Inc. Dba Tiernay Turbines |
| Status | ACTIVE |
| Coolant Type | FREON-12 |
| Current Type | AC |
| Power Source | ELECTRIC MOTOR |
| Cooling Capacity in Btu Per Hour | 18000.0 NOMINAL |
| Electric Motor Quantity | 3 |
| Nominal Cooling Capacity | 900.0 CUBIC FEET PER MINUTE |
| Surface Treatment | ENAMEL |
| Frequency Rating | 60.0 HERTZ NOMINAL |
| Usage Design | COMPRESSOR,CONDENSER FAN,EVAPORATOR FAN |
| Cabinet Material | ALUMINUM-COPPER FREE |
| Mounting Type | FLOOR |
| Voltage Rating | 120.0 VOLTS MINIMUM AND 208.0 VOLTS MAXIMUM |
| Condenser Cooling Type | AIR |
| Compressor Unit Type | CLOSED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| TM-18K-120-208-3-60 PRIMARY | Walker Power Systems, Inc. Dba Tiernay Turbines (USA) |
NSN 4120-01-077-6931 is a Air Conditioner, manufactured by Walker Power Systems, Inc. Dba Tiernay Turbines, classified under FSC 4120, Air Conditioning Equipment. Status: active.
NSN 4120-01-077-6931 has 1 manufacturer part number on file: TM-18K-120-208-3-60 (Walker Power Systems, Inc. Dba Tiernay Turbines).
Key specifications for TM-18K-120-208-3-60: Coolant Type: FREON-12; Current Type: AC; Power Source: ELECTRIC MOTOR; Cooling Capacity in Btu Per Hour: 18000.0 NOMINAL. 14 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.