The Filter,fluid, cataloged under National Stock Number 2530-01-677-5941, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. The manufacturer of record is General Dynamics Ordnance and Tactical Systems, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2530-01-677-5941 |
| Primary Part Number | SPAL4005591 |
| Item Name | Filter,fluid |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | General Dynamics Ordnance and Tactical Systems, Inc. |
| Status | ACTIVE |
| Body Outside Diameter | 51.0 MILLIMETERS NOMINAL MM |
| Style Designator | INLINE DISPOSAL W/THREADED CONNECTIONS |
| Body Length | 127.0 MILLIMETERS NOMINAL MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SPAL4005591 PRIMARY | General Dynamics Ordnance and Tactical Systems, Inc. (USA) |
| SPAL4005591 | Flyer Defense, Llc (USA) |
| AL4005591 | Flyer Defense, Llc (USA) |
| Reference | Meaning |
|---|---|
| AL4005591 | 5/9 Secondary reference General Dynamics Ordnance and Tactical Systems, Inc. |
NSN 2530-01-677-5941 is a Filter,fluid, manufactured by General Dynamics Ordnance and Tactical Systems, Inc., classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-01-677-5941 has 3 manufacturer part numbers on file: SPAL4005591 (General Dynamics Ordnance and Tactical Systems, Inc.), SPAL4005591 (Flyer Defense, Llc), AL4005591 (Flyer Defense, Llc).
1 possible match (shared part number, not a government interchangeability claim): 2940-01-680-8518. Verify interchangeability with system specifications before substitution.
Key specifications for SPAL4005591: Body Outside Diameter: 51.0 MILLIMETERS NOMINAL MM; Style Designator: INLINE DISPOSAL W/THREADED CONNECTIONS; Body Length: 127.0 MILLIMETERS NOMINAL MM; Part Name Assigned by Controlling Agency: FILTER,POWER STEERING. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.