Model: 31809-20

Gear Cluster

Properties:

Bore Style
W/ keyway both ends
Design Type
Spur first gear
Design Type
Spur second gear
Construction
Solid
Outside Diameter
1.887 inches first gear
Outside Diameter
0.637 inches second gear
Nominallength
0.472 inches
Hub Length
0.080 inches first end
Hub Length
0.082 inches between first and second gear
Bore Diameter
0.219 inches both ends
Keyway Width
0.064 inches both ends
Distance From Bore Center To Keyway Bottom
0.149 inches both ends
Hub Style Designator
Plain between first and second gear
Hub Style Designator
Plain first end
Hub Diameter
0.375 inches first end
Hub Diameter
0.437 inches between first and second gear
Material
Steel
Material Specification
Mil-s-8690 military specification single material response
NSN
3020-00-370-7489
Part Number
31809-20
Description
Gear Cluster
CAGE
31435

A cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. It may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. It is designed to mount on a shaft. For items consisting of a shaft with an integral complement(s) or gear teeth, see gearshaft (as modified). Excludes gear subassembly, speed decreaser.

Part 31809-20 NSN 3020-00-370-7489

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
36636
FIIG:
A270A0
Concept No.:
App. Key:
A
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:
197339
UFC:
96710
LTL:
65.0
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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