The Filter Element,fluid, cataloged under National Stock Number 2940-00-400-2991, 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 Capitol Engine Co, Inc Dba Salmini Worldwide. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2940-00-400-2991 |
| Primary Part Number | D6403173 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft |
| Manufacturer | Capitol Engine Co, Inc Dba Salmini Worldwide |
| Status | ACTIVE |
| Filtering Media Design | MULTIPLE STACKED DISKS SINGLE FILTERING MEDIA RESPONSE |
| Body Diameter | 3.250 INCHES NOMINAL IN |
| Body Overall Length | 10.000 INCHES NOMINAL IN |
| Flow Direction | OUTSIDE IN |
| Design Type | LIMITED |
| Temp Rating | 180.0 FAHRENHEIT NOMINAL DEGF |
| Style Designator | MULTIPLE STACKED DISKS, W/CLEANING BLADES |
| Differential Pressure | ERR-060 |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| D6403173 PRIMARY | Capitol Engine Co, Inc Dba Salmini Worldwide (USA) |
| Reference | Meaning |
|---|---|
| D6403157-6403174 | C/1 Advisory reference — outside the item-of-supply concept Dollinger Filtration Ltd |
| D6403157-6403174 | 5/9 Secondary reference Vokes Ltd (b T R Environmental Ltd) |
| B6322804PC1 | 5/9 Secondary reference Vokes Ltd (b T R Environmental Ltd) |
| B6322804PC1 | C/1 Advisory reference — outside the item-of-supply concept Dollinger Filtration Ltd |
NSN 2940-00-400-2991 is a Filter Element,fluid, manufactured by Capitol Engine Co, Inc Dba Salmini Worldwide, classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
NSN 2940-00-400-2991 has 1 manufacturer part number on file: D6403173 (Capitol Engine Co, Inc Dba Salmini Worldwide).
Key specifications for D6403173: Filtering Media Design: MULTIPLE STACKED DISKS SINGLE FILTERING MEDIA RESPONSE; Body Diameter: 3.250 INCHES NOMINAL IN; Body Overall Length: 10.000 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.