Model: A81978

Spur Gear

Properties:

Body Style
Plain, solid
Attachment Method
Clamp
Pitch Diameter
Between 0.6552 inches and 0.6562 inches
Teeth Quantity
21
Bore Style
Plain both ends
Outside Diameter
0.718 inches
Tooth Form
Standard
Pressure Angle
14.5000 degrees
Distance Between Body Face And Protruding Hub End
0.283 inches first end
Face Width
0.175 inches
Bore Diameter
0.250 inches both ends
Hub Style Designator
Split first end
Hub Diameter
0.313 inches first end
Clamping Surface Length
0.258 inches first end
Material
Steel comp 303
Material Specification
Qq-s-763, class 7, type a federal specification single material response
Style Designator
Protruding hub
NSN
3020-00-174-5542
Part Number
A81978
Description
Gear,spur
CAGE
09017

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 A81978 NSN 3020-00-174-5542

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

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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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