Model: 28777-1

Helical Gear

Properties:

Body Style
Webbed, offset, solid
Spline Quantity
12 both ends
Pitch Diameter
Between 0.7625 inches and 0.7750 inches
Teeth Quantity
40
Bore Style
Straight spline both ends
Outside Diameter
0.8725 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
8.1332 degrees
Distance Between Body Face And Protruding Hub End
0.125 inches first end
Face Width
0.287 inches
Bore Diameter
0.2105 inches first end
Hub Style Designator
Plain first end
Hub Diameter
0.355 inches first end
Material
Copper alloy
Style Designator
Protruding hub
NSN
3020-00-326-4230
Part Number
28777-1
Description
Gear,helical
CAGE
70210

A gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also gear, antibacklash, helical:

Part 28777-1 NSN 3020-00-326-4230

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05464
FIIG:
A27300
Concept No.:
1
App. Key:
AF
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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