Model: 31809-21

Gear Cluster

Properties:

Bore Style
W/ keyway both ends
Design Type
Spur first gear
Design Type
Spur second gear
Construction
Assembled
Outside Diameter
1.9300 inches first gear
Outside Diameter
0.5120 inches second gear
Nominallength
0.474 inches
Hub Length
0.0800 inches second end
Hub Length
0.082 inches between first and second gear
Hub Length
0.094 inches first end
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 both ends
Hub Diameter
0.375 inches second end
Hub Diameter
0.437 inches between first and second gear
Hub Diameter
0.437 inches first end
Material
Steel comp 8620
Material Specification
Mil-s-8690, comp 8620 military specification single material response
NSN
3020-00-319-3423
Part Number
31809-21
Description
Gear Cluster
CAGE
3CPE0

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 31809-21 NSN 3020-00-319-3423

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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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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