The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-291-1265, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Lockheed Martin Corporation. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4420-01-291-1265 |
| Primary Part Number | 717511918-002 |
| Item Name | Cooler,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Material Document and Classification | QQ-A-250/11 FED SPEC 2ND MATERIAL RESPONSE STRUTS |
| Material Document and Classification | QQ-A-250/8 FED SPEC 1ST MATERIAL RESPONSE SHELL |
| Height | 4.425 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY SHELL |
| Material | ALUMINUM ALLOY STRUTS |
| 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 |
|---|---|
| 12558-000 | Ametek Thermal Systems Inc (USA) |
| 717511918-002 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 717511918-001 | 5/9 Secondary reference Ametek Thermal Systems Inc |
| 717511918-001 | 5/9 Secondary reference Lockheed Martin Corporation |
| 717511918 | 5/9 Secondary reference Ametek Thermal Systems Inc |
NSN 4420-01-291-1265 is a Cooler,fluid,industrial, manufactured by Lockheed Martin Corporation, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-291-1265 has 2 manufacturer part numbers on file: 12558-000 (Ametek Thermal Systems Inc), 717511918-002 (Lockheed Martin Corporation).
Key specifications for 717511918-002: Material Document and Classification: QQ-A-250/11 FED SPEC 2ND MATERIAL RESPONSE STRUTS; Material Document and Classification: QQ-A-250/8 FED SPEC 1ST MATERIAL RESPONSE SHELL; Height: 4.425 INCHES NOMINAL IN; Special Features: OPERATING PRESSURE 150.0 PSI,PROOF PRESSURE 225.0 PSI,BURST PRESSURE 338.0 PSI. 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.