Model: B4021990

Electrical-electronic Heat Sink

Properties:

Overall Length
8.620 inches
Overall Height
0.520 inches
Overall Width
3.510 inches
Unthreaded Mounting Hole Diameter
1.000 inches single mounting facility
Mounting Facility Type And Quantity
2 unthreaded hole single mounting facility
Surface Treatment
Nickel
Surface Treatment Specification
Mil-c-26074, class 4, grade a military specification single treatment response
NSN
5999-01-218-8455
Part Number
B4021990
Description
Heat Sink,electrical-electronic
CAGE
56996

An item which is specifically designed to absorb, conduct or dissipate heat generated by an electrical and/or electronic component or an external source in order to prevent damage to the component. Do not use if a more specific name applies.

Part B4021990 NSN 5999-01-218-8455

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
61433
FIIG:
A03600
Concept No.:
App. Key:
B
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:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
063085
UFC:
05380
LTL:
85.0
LCL:
--
WCC:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8543909000
  • SITC: 77879
  • End Use: Electric apparatus
  • NAICS: 335999
  • USDA: 1

Freight Class: Electrical machines and apparatus parts, nesoi

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