Model: 3156SH21PC7

Spur Gear

Properties:

Body Style
Plain, solid
Pitch Diameter
Between 3.2460 inches and 3.2480 inches
Teeth Quantity
39
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Hardness Rating
60.0 rockwell c
Outside Diameter
3.375 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.750 inches first end
Face Width
1.235 inches
Bore Diameter
1.437 inches both ends
Keyway Width
0.156 inches both ends
Distance From Bore Center To Keyway Bottom
0.874 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
2.051 inches first end
Material
Steel
Material Specification
Mil-s-890, alloy no. 3 military specification single material response
Style Designator
Protruding hub
NSN
3020-00-287-8261
Part Number
3156SH21PC7
Description
Gear,spur
CAGE
33781

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 3156SH21PC7 NSN 3020-00-287-8261

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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