The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 1630-00-248-0153, is classified within Federal Supply Class 1630 (Aircraft Wheel and Brake Systems) of the Aircraft Components and Accessories group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1630-00-248-0153 |
| Item Name | Cylinder Assembly,hydraulic Brak |
| FSC / FSG | 1630 / 16 — Aircraft Wheel and Brake Systems |
| Status | ACTIVE |
| First Piston Rod End Thread Class | 3A A |
| Actuation Method | DIRECT |
| Mounting Facility Diameter | 0.250 INCHES NOMINAL IN |
| Compressed Length | 11.920 INCHES NOMINAL IN |
| Temp Rating | -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF |
| Extended Length | 14.250 INCHES NOMINAL IN |
| Port Thread Series Designator | UNF LOCATION NOT OTHERWISE SPECIFIED |
| First Piston Rod End Thread Quantity Per Inch | 24 |
| Body Outside Diameter | 1.625 INCHES NOMINAL IN |
| First Piston Rod End Style | EXTERNAL THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Port Thread Class | 3B LOCATION NOT OTHERWISE SPECIFIED |
| Thread Direction | UNABLE TO DECODE |
| Port Thread Quantity Per Inch | 20 LOCATION NOT OTHERWISE SPECIFIED |
| Port Thread Diameter | 0.437 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Port Location and Quantity | 2 CYLINDER HEAD END AND 1 PISTON ROD END |
| Port Style | GASKET SEAL LOCATION NOT OTHERWISE SPECIFIED |
| First Piston Rod End Thread Series Designator | UNF |
| Straight Bore Inside Diameter | 1.187 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY BODY |
| Mounting Type and Location | TONGUE CYLINDER HEAD END |
| Mounting Provision | UNTHREADED MOUNTING HOLES |
| First Piston Rod End Thread Diameter | 0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 311706 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1630-00-248-0153 is a Cylinder Assembly,hydraulic Brak, classified under FSC 1630, Aircraft Wheel and Brake Systems. Status: active.
Key specifications for 1630-00-248-0153: First Piston Rod End Thread Class: 3A A; Actuation Method: DIRECT; Mounting Facility Diameter: 0.250 INCHES NOMINAL IN; Compressed Length: 11.920 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.
NSN 1630-00-248-0153 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.