Model: 556549

Helical Compression Spring Seat

Special Features:

Not casehardened

Properties:

Counterbore Diameter
1.7600 inches
Overall Height
0.1800 inches
Bore Diameter
0.5200 inches
Design Type
Solid
End Diameter
1.9400 inches
Counterbore Length
0.1000 inches
Spherical Seat Top Radius
Between 0.0160 inches and 0.0470 inches
Material
Aluminum alloy, qq-a-268-canceled
Material
Aluminum alloy 2024
Material Specification
Qq-a-268-canceled federal specification single material response
Style Designator
Seat
Fsc Application Data
Separator, water, aircraft air conditioning system
NSN
5340-00-878-1657
Part Number
556549
Description
Seat,helical Compression Spring
CAGE
73030

Part 556549 NSN 5340-00-878-1657

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
24328
FIIG:
T319-E
Concept No.:
App. Key:
EA
Cond. Code:
1
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
133300
UFC:
63220
LTL:
RATING VARIABLE
LCL:
85.0
WCC:
713
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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