Model: 3445-020

Helical Compression Spring Seat

Special Features:

Not casehardened

Properties:

Counterbore Diameter
0.7970 inches
Overall Height
Between 0.2780 inches and 0.2880 inches
First Step Diameter
Between 0.8880 inches and 0.8940 inches
First Step Length
Between 0.0530 inches and 0.0730 inches
Second Step Diameter
Between 1.1190 inches and 1.1200 inches
Bore Diameter
Between 0.3740 inches and 0.3750 inches
Design Type
Solid
Countersink Diameter
Between 1.1190 inches and 1.1200 inches
End Diameter
Between 0.6340 inches and 0.6440 inches
Distance From End To First Step
Between 0.0540 inches and 0.0740 inches
Counterbore Length
Between 0.1510 inches and 0.1610 inches
Second Counterbore Length
0.0940 inches
Material
Steel
Material
Steel
Surface Treatment
Passivate
Style Designator
Seat
Surface Treatment
Passivated
Fsc Application Data
Sensor, compressor, temperature, engine, aircraft
NSN
5340-00-119-3153
Part Number
3445-020
Description
Seat,helical Compression Spring
CAGE
66503

Part 3445-020 NSN 5340-00-119-3153

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:
A
ESD:
ESD:
MMAC:
OP
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
095190
UFC:
49790
LTL:
RATING VARIABLE
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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