Model: SM-B-447246

Spur Gear

Properties:

Body Style
Webbed, offset, solid
Attachment Method
Mounting hole
Pitch Diameter
Between 0.8075 inches and 0.8175 inches
Teeth Quantity
39
Bore Style
Plain both ends
Backlash Designation
Grade c
Mounting Hole Thread Series Designator
Unc transversely through hub, first end
Mounting Hole Thready Qty Per Inch (tpi)
40 transversely through hub, first end
Mounting Hole Thread Size
0.112 inches transversely through hub, first end
Mounting Hole Type And Quantity
1 plain transversely through hub, first end and 1 threaded transversely through hub, first end
Outside Diameter
0.853 inches
Nominallength
0.312 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.222 inches first end
Body Recess Depth
0.050 inches second end
Face Width
0.090 inches
Bore Diameter
0.265 inches both ends
Hub Diameter
0.500 inches first end
Precision Classification
Quality number 8
Mounting Hole Diameter
0.043 inches transversely through hub, first end
Material
Aluminum alloy 2024
Material Specification
Qq-a-225/6, t4 federal specification single material response
Surface Treatment
Chromate
Surface Treatment Specification
Mil-c-5541, type 1 military specification single treatment response
Style Designator
Protruding hub, recessed body
NSN
3020-01-099-6178
Part Number
SM-B-447246
Description
Gear,spur
CAGE
80063

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 SM-B-447246 NSN 3020-01-099-6178

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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