The Collar,air Conditioning-Heating, cataloged under National Stock Number 4520-01-499-8448, 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 Department of the Army Hq United States Army Communications Research and Development Command. Government technical data includes 9 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 | 4520-01-499-8448 |
| Primary Part Number | B4033331-001 |
| Item Name | Collar,air Conditioning-Heating |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Department of the Army Hq United States Army Communications Research and Development Command |
| Status | ACTIVE |
| Fitting Inside Height | 7.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | RUSTOEUM 9400, 10.1 MFR REF SINGLE TREATMENT RESPONSE |
| Style Designator | RECTANGULAR OR SQUARE |
| Material Document and Classification | QQ-A-250/11, T6, 0.062 THICK FED SPEC SINGLE MATERIAL RESPONSE |
| Sheet Metal Gage Size | 15 |
| Fitting Inside Width | 2.000 INCHES NOMINAL IN |
| Surface Treatment | PAINT POLYURETHANE |
| Material | ALUMINUM ALLOY 6061 |
| Fitting Overall Length | 13.810 INCHES NOMINAL IN |
| 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 |
|---|---|
| B4033331-001 PRIMARY | Department of the Army Hq United States Army Communications Research and Development Command (USA) |
NSN 4520-01-499-8448 is a Collar,air Conditioning-Heating, manufactured by Department of the Army Hq United States Army Communications Research and Development Command, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-499-8448 has 1 manufacturer part number on file: B4033331-001 (Department of the Army Hq United States Army Communications Research and Development Command).
Key specifications for B4033331-001: Overall Height: 11.250 INCHES NOMINAL IN; Fitting Inside Height: 7.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: RUSTOEUM 9400, 10.1 MFR REF SINGLE TREATMENT RESPONSE; Style Designator: RECTANGULAR OR SQUARE. 9 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.