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Master Hydraulic Brake Cylinder Assembly

NSN: 1630-00-304-5396 | Model: 311887
ITAR Registered seal

A device consisting of a reservoir and/or cylinder, hydraulic brake, master with other components necessary to displace fluid from a central source for actuating the slave or wheel cylinders of a hydraulic brake system.

NSN Properties and Flags
NATO Stock Number
Yes - ITAR Controlled
Body Material
Aluminum alloy
Mounting Provision
Unthreaded mounting holes
Tempurature Rating
160.0 degrees Fahrenheit
Bore Diameter
1.187 inches
Body Outside Diameter
1.625 inches
Actuation Method
Compressed Length
11.650 inches
Extended Length
14.200 inches
Straight Bore Inside Diameter
1.187 inches
First Piston Rod End Style
External threaded
First Piston Rod End Thread Series Designator
First Piston Rod End Thread Diameter
0.312 inches
First Piston Rod End Thready Qty Per Inch (tpi)
First Piston Rod End Thread Class
First Piston Rod End Thread Direction
Mounting Type And Location
Tongue cylinder head end
Mounting Facility Diameter
0.250 inches
Port Location And Quantity
1 piston rod end
Port Style
Gasket seal
Port Thread Series Designator
Port Thread Diameter
0.437 inches
Port Thready Qty Per Inch (tpi)
Port Thread Class
Special Features
Utilizes external hydraulic pressure to provide higher brake pressureand volume, max input pressure 1500 psi

Pricing and Availability

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NSN 1630-00-304-5396 Datasheet

Supply Class (FSC):
Aircraft Wheel And Brake Systems
Cross Reference:
  • 311887
Cage Codes:
  • Aire, Inc. Hydro (CAGE 81982)
Schedule B & Trade:
  • Schedule B: 8803200060 (NAICS 336413)

    Undercarriages and parts thereof, for use in military aircraft

  • SITC: 79293

    Undercarriages and parts thereof for aircraft

  • End Use: 50070

    Parts for military-type goods


P - Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of federal standard 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.


A - Item does not contain precious metal.


- Represents items with no adp components


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    011920 - Aircraft brakes r parts noi

  • WCC:

    671 - Aircraft parts, to include test/tool sets and equipment (other than armament systems)

  • SHC:

    9 - Other or no special handling required (sh)

  • ACC:

    A - Supplies and equipment for aircraft and aerial targets, including aircraft and maintenance parts, aircraft accessories, aircraft

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • LTL:

    J - 100.0

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
    No qup
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability
    If condemned or uneconomically repairable , then dispose at direct support (ds) level.

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $254.87 to $424.78..
Does NSN 1630-00-304-5396 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Air Force, and Greece
What is the NIIN of NSN 1630-00-304-5396?
003045396 or 00-304-5396
Does NSN 1630-00-304-5396 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 1630-00-304-5396?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1963