Model: 12M639-7

Extension Helical Spring

Properties:

Opening Width
0.060 inches both ends
End Style
Machined half loop both ends
Spring Free Length
2.540 inches
Coil Quantity
30
Design Type
Mainspring
Load Rating
Between 15.120 pounds and 26.620 pounds
Coil Helix Direction
Right-hand or left-hand
Spring Deflection Rate
8.330 pounds per inch
Spring Free Outside Diameter
0.570 inches
Hook Radius
0.125 inches both ends
End Angular Relationship
Ends parallel one to other
Spring Length Under Load
Between 4.700 inches and 5.600 inches
Material
Steel
Style Designator
Cylindrical
NSN
5360-00-931-1658
Part Number
12M639-7
Description
Spring,helical,extension
CAGE
81755

Part 12M639-7 NSN 5360-00-931-1658

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
04227
FIIG:
A02900
Concept No.:
App. Key:
AB
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:
N
PMIC:
U
ESD:
ESD:
MMAC:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
177970
UFC:
87420
LTL:
NO RATING
LCL:
--
WCC:
579
TCC:
Z
SHC:
9
ACC:
Construction Materials

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