Model: 164-21

Spur Gear

Properties:

Body Style
Plain, solid
Pitch Diameter
0.4375 inches
Teeth Quantity
21
Bore Style
Plain both ends
Outside Diameter
0.479 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
0.250 inches both ends
Hub Style Designator
Pinned first end
Hub Diameter
0.406 inches first end
Precision Classification
Quality number 10 or quality number 11
Material
Steel comp 303 or steel comp 303se
Material
Steel comp 303 or steel comp 303se
Material Specification
Mil-s-7720, comp 303s military specification 1st material response or mil-s-7720, comp 303se military specification 2nd material response
Surface Treatment
Passivate
Style Designator
Protruding hub
NSN
3020-00-136-8606
Part Number
164-21
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 164-21 NSN 3020-00-136-8606

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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