The Outlet,air, cataloged under National Stock Number 4520-01-085-7437, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-085-7437 |
| Item Name | Outlet,air |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| FSC Application Data | HEATER,TRAILER MTD HDU-13M |
| General Characteristics Item Description | COMPOSED OF 1 EACH,MOTOR AND FAN SUPPORT,MODIFICATION PUMP,MODIFIED PUMP,EXPANSION TANK,VENTILATING FAN WELDMENT HOUSING,FAN ASSY VENTILATING,HOUSING COVER PLATE,AIR DISCHARGE DUCT,FELT GASKET,AIR OUTLET COVER,GALVANIZED SASH CHAIN,FELT RING,WASHER,KEY 0.188 SQ IN.BY1.000 IN. LG,THERMOSTAT; 2 EACH HEX HD SCREW 0.250 BY 1.000 IN. LG,FLAT WASHER,SELF LOCKING NUT,FLAT HD SCREW 0.625 IN. LG,HEX NUT,PREFORMED PACKING,MACHINE SCREW 6.000-40UNCBY0.188 IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 74161-1 | 3/9 Design control — primary reference U.S. Government activity |
| 74161-1 | 5/2 Secondary reference U.S. Government activity |
| 74161-1 | 5/9 Secondary reference Drs Environmental Systems Inc |
NSN 4520-01-085-7437 is a Outlet,air, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-01-085-7437: FSC Application Data: HEATER,TRAILER MTD HDU-13M; General Characteristics Item Description: COMPOSED OF 1 EACH,MOTOR AND FAN SUPPORT,MODIFICATION PUMP,MODIFIED PUMP,EXPANSION TANK,VENTILATING FAN WELDMENT HOUSING,FAN ASSY VENTILATING,HOUSING COVER PLATE,AIR DISCHARGE DUCT,FELT GASKET,AIR OUTLET COVER,GALVANIZED SASH CHAIN,FELT RING,WASHER,KEY 0.188 SQ IN.BY1.000 IN. LG,THERMOSTAT; 2 EACH HEX HD SCREW 0.250 BY 1.000 IN. LG,FLAT WASHER,SELF LOCKING NUT,FLAT HD SCREW 0.625 IN. LG,HEX NUT,PREFORMED PACKING,MACHINE SCREW 6.000-40UNCBY0.188 IN. 2 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.