The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 2530-00-449-5599, 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 Federal Mogul Corp Sub Wagner Brake Moog Automotive Div. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 2530-00-449-5599 |
| Primary Part Number | F66784 |
| Item Name | Cylinder Assembly,hydraulic Brak |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Federal Mogul Corp Sub Wagner Brake Moog Automotive Div |
| Status | ACTIVE |
| Actuation Method | DIRECT |
| Mounting Facility Diameter | 0.375 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Provisions | 3.375 INCHES NOMINAL IN |
| Bleeding Feature Quantity | 1 |
| Seat Angle in Deg | 45.0 SINGLE PORT |
| Seat Angle in Deg | 45.0 ALL PORTS |
| Port Thread Series Designator | UNF ALL PORTS |
| Port Thread Series Designator | UNF SINGLE PORT |
| Mounting Provision Arrangement Style | TWO HOLE |
| Port Thread Class | 2B SINGLE PORT |
| Port Thread Class | 2B ALL PORTS |
| Port Thread Quantity Per Inch | 20 ALL PORTS |
| Port Thread Quantity Per Inch | 18 SINGLE PORT |
| Port Thread Diameter | 0.562 INCHES NOMINAL SINGLE PORT IN |
| Port Thread Diameter | 0.500 INCHES NOMINAL ALL PORTS IN |
| Port Location and Quantity | 2 CENTER SECTION |
| Port Style | INVERTED FLARE ALL PORTS |
| Port Style | INVERTED FLARE SINGLE PORT |
| Material | STEEL BODY |
| Mounting Type and Location | FLANGE PISTON ROD END |
| Reservoir Type | INTEGRAL |
| Mounting Provision | UNTHREADED 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 |
|---|---|
| M66784 | Airtex Products Div of Uis Inc (USA) |
| 3912103 | General Motors Llc Dba General Motors Llc (USA) |
| F66784 PRIMARY | Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA) |
| MC66784 | Trw Inc Replacement Parts Div (USA) |
| Reference | Meaning |
|---|---|
| 3912103 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| M66784 | 5/9 Secondary reference Allparts Inc |
| E66784 | 5/9 Secondary reference U.S. Government activity |
| 2226045 | 5/9 Secondary reference Allied Automotive Allied Aftermarket Div |
| 3912103 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 550250C91 | 5/2 Secondary reference U.S. Government activity |
| H-66784 | 5/2 Secondary reference U.S. Government activity |
| 550250C91 | 5/9 Secondary reference U.S. Government activity |
| 36245 | 5/9 Secondary reference Echlin Inc |
| MC66784 | 5/9 Secondary reference C E Niehoff & Co |
| 1330 | 5/9 Secondary reference Bendix Corp the |
NSN 2530-00-449-5599 is a Cylinder Assembly,hydraulic Brak, manufactured by Federal Mogul Corp Sub Wagner Brake Moog Automotive Div, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-00-449-5599 has 4 manufacturer part numbers on file: M66784 (Airtex Products Div of Uis Inc), 3912103 (General Motors Llc Dba General Motors Llc), F66784 (Federal Mogul Corp Sub Wagner Brake Moog Automotive Div), MC66784 (Trw Inc Replacement Parts Div).
3 possible matches (shared part number, not a government interchangeability claim): 1680-00-759-3388, 2920-00-829-6598, 5895-01-223-5240. Verify interchangeability with system specifications before substitution.
Key specifications for F66784: Actuation Method: DIRECT; Mounting Facility Diameter: 0.375 INCHES NOMINAL IN; Overall Height: 5.000 INCHES NOMINAL IN; Center to Center Distance Between Mounting Provisions: 3.375 INCHES NOMINAL IN. 22 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.