Model: 657-20S

Spur Gear

Special Features:

Unthreaded hole 90 degrees from threaded hole

Properties:

Body Style
Plain, solid
Pitch Diameter
0.1666 inches
Teeth Quantity
20
Bore Style
Plain both ends
Outside Diameter
0.183 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.250 inches first end
Face Width
0.125 inches
Bore Diameter
0.120 inches both ends
Hub Style Designator
Pinned first end
Hub Diameter
0.171 inches first end
Precision Classification
Quality number 10 or quality number 11
Material
Steel comp 303
Material Specification
Mil-s-7720, comp 303s military specification single material response
Style Designator
Protruding hub
NSN
3020-00-627-8471
Part Number
657-20S
Description
Gear,spur
CAGE
01351

A gear, cylindrical in form, with straight teeth on the outer surface parallel to the axis of the gear. See also gear, antibacklash, spur. For bulk material, see rod, pinion.

Part 657-20S NSN 3020-00-627-8471

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05466
FIIG:
A27300
Concept No.:
1
App. Key:
AH
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197337
UFC:
96690
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8483409000
  • SITC: 74840
  • End Use: Industrial machines, other
  • NAICS: 333612
  • USDA: 1

Freight Class: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately

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