The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 2530-00-679-6091, 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 Trw Inc Replacement Parts Div. Government technical data includes 23 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-00-679-6091 |
| Primary Part Number | WC25463 |
| Item Name | Cylinder Assembly,hydraulic Brak |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Trw Inc Replacement Parts Div |
| Status | ACTIVE |
| Center to Center Distance Between Mounting Provisions | 2.000 INCHES NOMINAL IN |
| Mounting Facility Thread Class | 2B |
| Bleeding Feature Quantity | 2 |
| Design Characteristics | SINGLE ACTING SINGLE CYLINDER |
| Port Thread Series Designator | UNF SINGLE PORT |
| Body Outside Diameter | 2.010 INCHES NOMINAL IN |
| Mounting Position | LEFT |
| Mounting Provision Arrangement Style | TWO HOLE |
| Mounting Facility Thread Quantity Per Inch | 18 |
| Bore Type | STRAIGHT |
| Port Thread Class | 2B SINGLE PORT |
| Port Thread Quantity Per Inch | 24 SINGLE PORT |
| Mounting Facility Thread Length | 0.562 INCHES NOMINAL IN |
| Port Thread Diameter | 0.375 INCHES NOMINAL SINGLE PORT IN |
| Mounting Facility Thread Diameter | 0.313 INCHES NOMINAL IN |
| Port Location and Quantity | 1 CENTER SECTION |
| Port Style | GASKET SEAL SINGLE PORT |
| Mounting Facility Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Bore Diameter | 1.625 INCHES NOMINAL IN |
| Material | IRON CAST BODY |
| Mounting Type and Location | FLANGE CENTER SECTION |
| Mounting Facility Thread Direction | RIGHT-HAND |
| Mounting Provision | THREADED MOUNTING HOLES |
| 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 |
|---|---|
| WC25463 | Trw Inc Replacement Parts Div (USA) |
| 5473149 | General Motors Llc Dba General Motors Llc (USA) |
| W25463 | Airtex Products Div of Uis Inc (USA) |
| Reference | Meaning |
|---|---|
| 3262 | 5/9 Secondary reference Bendix Corp the |
| 25463 | 5/9 Secondary reference Echlin Inc |
| WC25463 | 5/9 Secondary reference C E Niehoff & Co |
| EW25463 | 5/9 Secondary reference U.S. Government activity |
| 5473149 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| B7Q2262B | 3/9 Design control — primary reference Ford Motor Company |
| 172-391 | 5/9 Secondary reference Delco Moraine Div of General Motors Corp |
| B7Q2262B | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| F25463 | 5/9 Secondary reference Baker Brush Co |
NSN 2530-00-679-6091 is a Cylinder Assembly,hydraulic Brak, manufactured by Trw Inc Replacement Parts Div, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-00-679-6091 has 3 manufacturer part numbers on file: WC25463 (Trw Inc Replacement Parts Div), 5473149 (General Motors Llc Dba General Motors Llc), W25463 (Airtex Products Div of Uis Inc).
11 possible matches (shared part number, not a government interchangeability claim): 5950-00-736-1208, 5935-00-954-1421, 5950-01-089-5171. Verify interchangeability with system specifications before substitution.
Key specifications for WC25463: Overall Height: 2.320 INCHES NOMINAL IN; Center to Center Distance Between Mounting Provisions: 2.000 INCHES NOMINAL IN; Mounting Facility Thread Class: 2B; Bleeding Feature Quantity: 2. 23 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.