The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 2530-00-077-1691, 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 Kalmar AC Inc. Government technical data includes 21 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-00-077-1691 |
| Primary Part Number | 4784599 |
| Item Name | Cylinder Assembly,hydraulic Brak |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Kalmar AC Inc |
| Status | ACTIVE |
| First Piston Rod End Thread Class | 2B |
| Mounting Facility Diameter | 0.391 INCHES NOMINAL IN |
| Stoplight Switch Thread Quantity Per Inch | 27 |
| Center to Center Distance Between Mounting Provisions | 3.438 INCHES NOMINAL IN |
| Compressed Length | 8.406 INCHES NOMINAL IN |
| Extended Length | 9.844 INCHES NOMINAL IN |
| Port Thread Series Designator | NPT LOCATION NOT OTHERWISE SPECIFIED |
| First Piston Rod End Thread Quantity Per Inch | 20 |
| Mounting Provision Arrangement Style | TWO HOLE |
| Thread Direction | UNABLE TO DECODE |
| Port Thread Diameter | 0.125 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Port Nominal Pipe Thread Size | 0.125 INCHES IN |
| Port Style | GASKET SEAL LOCATION NOT OTHERWISE SPECIFIED |
| First Piston Rod End Thread Series Designator | UNF |
| Straight Bore Inside Diameter | 1.000 INCHES NOMINAL IN |
| Mounting Type and Location | BOSS CENTER SECTION |
| Reservoir Type | INTEGRAL |
| Stoplight Switch Thread Series Designator | NPTF |
| Mounting Provision | UNTHREADED MOUNTING HOLES |
| First Piston Rod End Thread Diameter | 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Stoplight Switch Nominal Pipe Thread Size | 0.125 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 2530-00-077-1691 is a Cylinder Assembly,hydraulic Brak, manufactured by Kalmar AC Inc, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-00-077-1691 has 3 manufacturer part numbers on file: 4784599 (Kalmar AC Inc), FE-24728 (Federal Mogul Corp Sub Wagner Brake Moog Automotive Div), F24728 (Federal Mogul Corp Sub Wagner Brake Moog Automotive Div).
Key specifications for 4784599: First Piston Rod End Thread Class: 2B; Mounting Facility Diameter: 0.391 INCHES NOMINAL IN; Overall Height: 4.250 INCHES NOMINAL IN; Stoplight Switch Thread Quantity Per Inch: 27. 21 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.