The Cooler,lubricating Oil,engine, cataloged under National Stock Number 2935-01-666-5291, is classified within Federal Supply Class 2935 (Engine System Cooling Components, Aircraft Prime Moving) of the Engine Accessories group. The manufacturer of record is Rtx Corporation Div Pratt & Whitney. 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 | 2935-01-666-5291 |
| Primary Part Number | 4952965 |
| Item Name | Cooler,lubricating Oil,engine |
| FSC / FSG | 2935 / 29 — Engine System Cooling Components, Aircraft Prime Moving |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4952965 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
NSN 2935-01-666-5291 is a Cooler,lubricating Oil,engine, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 2935, Engine System Cooling Components, Aircraft Prime Moving. Status: active.
NSN 2935-01-666-5291 has 1 manufacturer part number on file: 4952965 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 4952965: End Item Identification: CH-53K SIKORSKY HEAVY LIFT HELICOPTER. 0 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.
NSN 2935-01-666-5291 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.