Model: 631-20S

Centrifugal Impeller

Special Features:

Additional mtg holes and spacing, 4 0.156 in. Diameter on 3.781 in. Bo circle, 1 0.188 in. Diameter ctr 0.375 in. From edge of bore, ccw rotation facing open side

Properties:

Width
2.625 inches
Diameter
6.312 inches
Mounting Hole Diameter
0.188 inches
Mounting Hole Quantity
4
Mounting Bolt Circle Diameter
2.406 inches
Blade Quantity
32
Attachment Method
Bolt hole
Material
Aluminum blade
Style Designator
Curved blades single width
NSN
4140-00-618-4546
Part Number
631-20S
Description
Impeller,centrifugal
CAGE
95933

An item with blades, vanes, or paddles equally spaced radially or horizontally around the periphery of a hub, rotor, or wheel. It is the rotating part of a centrifugal fan, electric motor, generator and the like which creates a flow of air or gas perpendicular to the axis of rotation.

Part 631-20S NSN 4140-00-618-4546

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
10088
FIIG:
A087A0
Concept No.:
App. Key:
H
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:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8414901040
  • SITC: 74380
  • End Use: Household appliances
  • NAICS: 335210
  • USDA: 1

Freight Class: Parts of fans (including blowers) and ventilating or recycling hoods for permanent installation (of subheading 8414.51.00)

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