Model: 42578-2

Helical Compression Spring Seat

Special Features:

Matl-cres steel ams 5643, comp 17-4ph; passivated, hrps-161 hydraulic research; right end c/bored 0.307/0.308 in. Diameter by 0.180/0.185 in. Deep, right end slotted 4 places equally spaced 0.093 in. W by 0.080 in. Deep, 4 holes 0.109 in. Diameter equally spaced drilled through seat 0.306 in. From right end

Properties:

Overall Height
Between 0.4380 inches and 0.4400 inches
First Step Diameter
Between 0.4335 inches and 0.4355 inches
Bore Diameter
Between 0.2350 inches and 0.2450 inches
Design Type
Solid
End Diameter
Between 0.3650 inches and 0.3750 inches
Distance From End To First Step
Between 0.3550 inches and 0.3650 inches
Material
Steel, corrosion resisting
Material
Stainless steel
Surface Treatment
Passivate
Surface Treatment
Passivated
Test Data Document
81349-mil-i-6868 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
NSN
5340-00-179-6429
Part Number
42578-2
Description
Seat,helical Compression Spring
CAGE
81873

Part 42578-2 NSN 5340-00-179-6429

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
5.0 X 5.0 X 1.2
Paclk Weight:
0.2000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
SPI Rev.:
SPC Mkg:
LVL_A:
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
177980
UFC:
87430
LTL:
55.0
LCL:
55.0
WCC:
579
TCC:
Z
SHC:
9
ACC:
Equipment for Aircraft

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