Model: C311-280

Gear Cluster

Properties:

Attachment Method
Mounting hole
Bore Style
Plain both ends
Design Type
Spur first gear
Design Type
Spur second gear
Construction
Assembled
Outside Diameter
1.042 inches second gear
Outside Diameter
4.0417 inches first gear
Nominallength
0.750 inches
Hub Length
0.062 inches between first and second gear
Hub Length
0.3710 inches first end
Bore Diameter
0.219 inches both ends
Hub Style Designator
Pinned first end
Hub Style Designator
Plain between first and second gear
Hub Diameter
0.500 inches first end
Hub Diameter
0.927 inches between first and second gear
Precision Classification
Quality number 10 all gears or quality number 11 all gears
Material
Copper alloy first gear
Material
Steel comp 304l second gear
Material
Steel comp 304l shaft/hub
Material Specification
Qq-b-639, alloy 464 hard federal specification single material response first gear
Material Specification
Qq-s-763, class 304l federal specification single material response second gear
Material Specification
Qq-s-763, class 304l federal specification single material response shaft/hub
Surface Treatment
Passivate shaft/hub
Surface Treatment
Passivate second gear
NSN
3020-00-705-1658
Part Number
C311-280
Description
Gear Cluster
CAGE
92755

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 C311-280 NSN 3020-00-705-1658

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:
197337
UFC:
96690
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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