Model: 21498

Gear Cluster

Properties:

Design Type
Spur first gear
Design Type
Spur second gear
Construction
Assembled
Hardness Rating
56.0 rockwell c hub and 58.0 rockwell c hub
Outside Diameter
0.765 inches first gear
Outside Diameter
0.421 inches second gear
Nominallength
0.298 inches
Hub Length
0.047 inches between first and second gear
Hub Length
0.105 inches first end
Hub Length
0.105 inches second end
Hub Style Designator
2 steps both ends
Hub Style Designator
Plain between first and second gear
Hub Diameter
0.012 inches both ends
Hub Diameter
0.156 inches between first and second gear
Material
Aluminum alloy 2024 first gear
Material
Aluminum alloy 2024 second gear
Material
Steel shaft/hub
Material Specification
Qq-a-250/5, t6 federal specification single material response first gear
Material Specification
Qq-a-250/5, t6 federal specification single material response second gear
Material Specification
Qq-t-570 federal specification single material response shaft/hub
NSN
3020-00-939-2622
Part Number
21498
Description
Gear Cluster
CAGE
98810

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 21498 NSN 3020-00-939-2622

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:
0.1000lbs
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:
133300
UFC:
63220
LTL:
RATING VARIABLE
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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