Model: B311-342

Gear Cluster

Properties:

Bore Style
Plain both ends
Design Type
Spur first gear
Design Type
Spur second gear
Construction
Assembled
Outside Diameter
1.1875 inches second gear
Outside Diameter
2.3333 inches first gear
Nominallength
0.654 inches
Hub Length
0.023 inches first end
Hub Length
0.319 inches between first and second gear
Bore Diameter
0.625 inches both ends
Hub Style Designator
1 step between first and second gear
Hub Style Designator
Plain first end
Hub Diameter
0.750 inches first end
Hub Diameter
1.188 inches between first and second gear
Precision Classification
Quality number 9 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
3020-00-706-9343
Part Number
B311-342
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 B311-342 NSN 3020-00-706-9343

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.2000lbs
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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