The Collar,air Conditioning-Heating, cataloged under National Stock Number 4520-01-595-4288, 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 Naval Sea Systems Command. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-595-4288 |
| Primary Part Number | 512-6985080-A1 |
| Item Name | Collar,air Conditioning-Heating |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fitting Inside Diameter | 8.000 INCHES NOMINAL IN |
| Overall Diameter | 11.000 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Material | STEEL CORROSION RESISTING |
| Fitting Overall Length | 1.500 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 |
|---|---|
| 512-7067298-F50 | Naval Sea Systems Command (USA) |
| 512-6985080-A1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2601A22-50 | 5/2 Secondary reference U.S. Government activity |
| H643-2601-F50 | 5/2 Secondary reference U.S. Government activity |
| H5120108-A1 | 5/2 Secondary reference U.S. Government activity |
NSN 4520-01-595-4288 is a Collar,air Conditioning-Heating, manufactured by Naval Sea Systems Command, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-595-4288 has 2 manufacturer part numbers on file: 512-7067298-F50 (Naval Sea Systems Command), 512-6985080-A1 (Naval Sea Systems Command).
Key specifications for 512-6985080-A1: Fitting Inside Diameter: 8.000 INCHES NOMINAL IN; Overall Diameter: 11.000 INCHES NOMINAL IN; Style Designator: ROUND; Special Features: SHEET METAL THICKNESS 0.125, BETWEEN GAGE 10 AND 11; QQ-S-786 CL 304 COND A. 5 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.