The Filter Element,fluid, cataloged under National Stock Number 2940-01-321-6491, 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 Honeywell International Inc Dba Honeywell Div Consumer Products Group. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2940-01-321-6491 |
| Primary Part Number | CH6645 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft |
| Manufacturer | Honeywell International Inc Dba Honeywell Div Consumer Products Group |
| Status | ACTIVE |
| Filtering Media Design | POROUS SINGLE FILTERING MEDIA RESPONSE |
| Body Diameter | 7.440 INCHES NOMINAL IN |
| Body Overall Length | 18.130 INCHES NOMINAL IN |
| Flow Direction | OUTSIDE IN |
| Design Type | NONREUSABLE |
| Style Designator | CYLINDRICAL W/ CONTAINER (RIGID) |
| Body Inside Diameter | 4.850 INCHES NOMINAL IN |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Material | METAL CONTAINER/CARTRIDGE |
| Material | GLASS 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 |
|---|---|
| CH6645 PRIMARY | Honeywell International Inc Dba Honeywell Div Consumer Products Group (USA) |
| HF0622300 PRIMARY | Cummins Filtration Inc Dba Fleetguard Div Cummins Inc (USA) |
| Reference | Meaning |
|---|---|
| 940241C2 | 5/2 Secondary reference U.S. Government activity |
| HF-6223 | 5/9 Secondary reference Cummins Filtration Inc Dba Fleetguard Div Cummins Inc |
| P16-4270 | 5/9 Secondary reference Donaldson Company, Inc. |
NSN 2940-01-321-6491 is a Filter Element,fluid, manufactured by Honeywell International Inc Dba Honeywell Div Consumer Products Group, classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
NSN 2940-01-321-6491 has 2 manufacturer part numbers on file: CH6645 (Honeywell International Inc Dba Honeywell Div Consumer Products Group), HF0622300 (Cummins Filtration Inc Dba Fleetguard Div Cummins Inc).
1 possible match (shared part number, not a government interchangeability claim): 2910-01-391-5870. Verify interchangeability with system specifications before substitution.
Key specifications for CH6645: Filtering Media Design: POROUS SINGLE FILTERING MEDIA RESPONSE; Body Diameter: 7.440 INCHES NOMINAL IN; Body Overall Length: 18.130 INCHES NOMINAL IN; Flow Direction: OUTSIDE IN. 10 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.