The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 1630-00-928-9124, is classified within Federal Supply Class 1630 (Aircraft Wheel and Brake Systems) of the Aircraft Components and Accessories group. The manufacturer of record is Tactair Fluid Controls 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1630-00-928-9124 |
| Primary Part Number | HP891100-11 |
| Item Name | Cylinder Assembly,hydraulic Brak |
| FSC / FSG | 1630 / 16 — Aircraft Wheel and Brake Systems |
| Manufacturer | Tactair Fluid Controls Inc |
| Status | ACTIVE |
| Actuation Method | DIRECT |
| Center to Center Distance Between Mounting Provisions | 1.625 INCHES NOMINAL IN |
| Compressed Length | 11.500 INCHES NOMINAL IN |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Extended Length | 13.000 INCHES NOMINAL IN |
| Port Thread Series Designator | UNF LOCATION NOT OTHERWISE SPECIFIED |
| Body Outside Diameter | 1.970 INCHES NOMINAL IN |
| Mounting Provision Arrangement Style | TWO HOLE |
| First Piston Rod End Style | BEARING TYPE LOCATION NOT OTHERWISE SPECIFIED |
| First End Thickness at Mounting Holes | 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Port Thread Class | 3B LOCATION NOT OTHERWISE SPECIFIED |
| 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 | 3 CYLINDER HEAD END |
| Port Style | GASKET SEAL LOCATION NOT OTHERWISE SPECIFIED |
| First End Hole Diameter | 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Straight Bore Inside Diameter | 1.187 INCHES NOMINAL IN |
| Material | STEEL BODY |
| Mounting Type and Location | TONGUE CYLINDER HEAD END |
| Mounting Provision | UNTHREADED MOUNTING HOLES |
| First End Outside Diameter | 0.800 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 65256-05036-102 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 65256-05036-102 | Airbus Deutschland Gmbh -Werk Bremen- (DEU) |
| HP891100-11 PRIMARY | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| HP891100-11 | 5/9 Secondary reference U.S. Government activity |
NSN 1630-00-928-9124 is a Cylinder Assembly,hydraulic Brak, manufactured by Tactair Fluid Controls Inc, classified under FSC 1630, Aircraft Wheel and Brake Systems. Status: active.
NSN 1630-00-928-9124 has 3 manufacturer part numbers on file: 65256-05036-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65256-05036-102 (Airbus Deutschland Gmbh -Werk Bremen-), HP891100-11 (Tactair Fluid Controls Inc).
Key specifications for HP891100-11: Actuation Method: DIRECT; Center to Center Distance Between Mounting Provisions: 1.625 INCHES NOMINAL IN; Compressed Length: 11.500 INCHES NOMINAL IN; Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF. 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.
NSN 1630-00-928-9124 has DEMIL Code Q. 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.