The Container,heater, cataloged under National Stock Number 4520-01-251-8404, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-251-8404 |
| Item Name | Container,heater |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | IRON;INCLUDES HALF COUPLING 1 IN. PIPE 1;HEATER MOUNTING BRACKET 2;HALF COUPLING 1 1/4 IN. PIPE 2;NIPPLE,PIPE 1;FLANGE 1;CAP 1;CYLINDER CONTAINER 1 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 |
|---|---|
| 74223-1 | 5/2 Secondary reference U.S. Government activity |
| 74223-1 | 3/9 Design control — primary reference U.S. Government activity |
| 74223-1 | 5/9 Secondary reference Drs Environmental Systems Inc |
| 74223 | D/9 Drawing number reference only U.S. Government activity |
NSN 4520-01-251-8404 is a Container,heater, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-01-251-8404: General Characteristics Item Description: IRON;INCLUDES HALF COUPLING 1 IN. PIPE 1;HEATER MOUNTING BRACKET 2;HALF COUPLING 1 1/4 IN. PIPE 2;NIPPLE,PIPE 1;FLANGE 1;CAP 1;CYLINDER CONTAINER 1 IN; End Item Identification: 4520-00-859-5420. 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.