Model: 403963-1

Hydraulic Brake Piston

Properties:

Groove Depth
0.088 inches
Groove Width
Between 0.238 inches and 0.243 inches
Outside Diameter
Between 1.246 inches and 1.248 inches
Length
Between 5.053 inches and 5.073 inches
Construction Type
One-piece
Surface Condition
Externally grooved
Piston Cup
Not included
Shoe Actuating End Type
Recessed for steel insert
Material
Steel comp 4130
Material Specification
Fed standard 66 federal standard 1st material response or aisi 4130 assn standard single material response
NSN
1630-01-253-0569
Part Number
403963-1
Description
Piston,hydraulic Brake
CAGE
29778

A metallic or nonmetallic item designed to function in a wheel cylinder or caliper of a hydraulic brake system.

Part 403963-1 NSN 1630-01-253-0569

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
36146
FIIG:
T129-S
Concept No.:
1
App. Key:
SA
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8803200060
  • SITC: 79293
  • End Use: Parts for military-type goods
  • NAICS: 336413
  • USDA: 1

Freight Class: Undercarriages and parts thereof, for use in military aircraft

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