The Unit Heater,air Circulating,stea, cataloged under National Stock Number 4520-01-429-9917, 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 Carr Supply, Inc.. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-429-9917 |
| Primary Part Number | HS-63 |
| Item Name | Unit Heater,air Circulating,stea |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Carr Supply, Inc. |
| Status | ACTIVE |
| Maximum Air Flow Rate | 1120.0 CUBIC FEET PER MINUTE |
| Speed Adjustments | SINGLE SPEED |
| Heat Delivery Rate | 63000.0 BRITISH THERMAL UNIT |
| Heat Medium Type | AIR |
| Inclosure Material | STEEL |
| Quantity | 1 |
| Heat Outlet Quantity | 1 |
| Heat Discharge Outlet Type | ADJUSTABLE |
| Heat Delivery Direction | HORIZONTAL |
| Height | 22.000 INCHES NOMINAL IN |
| Air Circulation Device | PROPELLER FAN |
| Maximum Pressure Limit | 2.0 POUNDS PER SQUARE INCH GAGE LBS |
| Width | 22.000 INCHES NOMINAL IN |
| Prime Mover Type | ELECTRIC MOTOR |
| Circulated Air Type | HEATED |
| Heat Directing Device | ADJUSTABLE LOUVER |
| Mounting Type | CEILING SUSPENDED OR WALL SUSPENDED, ROOM INTERIOR |
| Heating Element Type | HOT WATER COIL AND STEAM COIL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4520-01-429-9917 is a Unit Heater,air Circulating,stea, manufactured by Carr Supply, Inc., classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-429-9917 has 2 manufacturer part numbers on file: HS-63 (Carr Supply, Inc.), HS-63 (Mussun Sales Inc).
Key specifications for HS-63: Maximum Air Flow Rate: 1120.0 CUBIC FEET PER MINUTE; Speed Adjustments: SINGLE SPEED; Heat Delivery Rate: 63000.0 BRITISH THERMAL UNIT; Heat Medium Type: AIR. 18 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.