Model: 331R721

Compression Helical Spring

Properties:

Inside Diameter
0.119 inches
End Style
E4 spring end, squared and ground both ends
Spring Free Length
0.398 inches
Coil Quantity
8 1/2
Spring Solid Length
0.238 inches
Coil Helix Direction
Right-hand or left-hand
Spring Deflection Rate
40.920 pounds per inch
Spring Free Outside Diameter
0.175 inches
Material
Steel comp 631
Material Specification
Ams 5678, comp 17-7ph assn standard single material response
Surface Treatment
Passivate
Surface Treatment Specification
Eps4, rex chainbelt inc mfr ref single treatment response
Style Designator
Cylindrical
NSN
5360-01-310-9532
Part Number
331R721
Description
Spring,helical,compression
CAGE
98939

Part 331R721 NSN 5360-01-310-9532

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
04226
FIIG:
A02900
Concept No.:
1
App. Key:
AA
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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
178020
UFC:
87470
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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