The Filter Element,intake Air Cleane, cataloged under National Stock Number 2940-00-487-3498, is classified within Federal Supply Class 2940 (Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Maradyne Corporation. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2940-00-487-3498 |
| Primary Part Number | R250A28 |
| Item Name | Filter Element,intake Air Cleane |
| FSC / FSG | 2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft |
| Manufacturer | Maradyne Corporation |
| Status | ACTIVE |
| Filtering Media Design | PLEATED SINGLE FILTERING MEDIA RESPONSE |
| Body Diameter | 11.438 INCHES NOMINAL IN |
| Body Overall Length | 5.545 INCHES NOMINAL IN |
| Design Type | NONREUSABLE |
| Style Designator | CYLINDRICAL W/CLOSED ENDS |
| Body Inside Diameter | 8.625 INCHES NOMINAL IN |
| Material | PAPER FILTERING MEDIUM |
| 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 |
|---|---|
| 1UX1 | Oshkosh Defense Llc (USA) |
| R250A28 PRIMARY | Maradyne Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1UX1 | 5/9 Secondary reference Oshkosh Corp |
| R250A28 | 5/9 Secondary reference Greenlees Filter Llc |
| 250A2B | C/1 Advisory reference — outside the item-of-supply concept United Air Filter, Inc. |
| 250A28 | 5/9 Secondary reference United Air Filter, Inc. |
NSN 2940-00-487-3498 is a Filter Element,intake Air Cleane, manufactured by Maradyne Corporation, classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
NSN 2940-00-487-3498 has 2 manufacturer part numbers on file: 1UX1 (Oshkosh Defense Llc), R250A28 (Maradyne Corporation).
Key specifications for R250A28: Filtering Media Design: PLEATED SINGLE FILTERING MEDIA RESPONSE; Body Diameter: 11.438 INCHES NOMINAL IN; Body Overall Length: 5.545 INCHES NOMINAL IN; Design Type: NONREUSABLE. 7 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.