Model: 2642-343-03 ITEM 3

Internal Gear

Special Features:

Hmodified 10 spline and foolproof hole, four 0.125 in. Diameter holes equally spaced at base of gear teeth. Various other holes and features. Similar to item 4 nsn 3020-01-478-7502 and item 43 same drawing.

Properties:

Body Style
Plain, solid
Spline Quantity
10 first end
End Application
Los angeles class ssn (688)
Pitch Diameter
4.2000 inches
Teeth Quantity
42
Bore Style
Straight spline first end
Hardness Rating
39.0 rockwell c and 42.0 rockwell c
Outside Diameter
5.343 inches
Nominallength
3.938 inches
Teeth Type
Spur
Tooth Form
Stub
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.844 inches first end
Face Width
1.219 inches
Bore Diameter
1.562 inches first end
Hub Style Designator
3 steps first end
End Length
0.844 inches first end
End Diameter
3.500 inches first end
First Step Length
0.844 inches first end
First Step Diameter
3.500 inches first end
Second Step Length
0.219 inches first end
Second Step Diameter
4.498 inches first end
Third Step Length
2.125 inches first end
Third Step Diameter
5.320 inches first end
Part Name Assigned By Controlling Agency
Internal spur gear
Material
Steel
Material Specification
Mil-s-800 cond c military specification single material response
Style Designator
Solid back ring, protruding hub, recessed hub
NSN
3020-01-492-6468
Part Number
2642-343-03 ITEM 3
Description
Gear,internal
CAGE

A gear with teeth formed on the inner surface of a cylinder or cone.

Part 2642-343-03 ITEM 3 NSN 3020-01-492-6468

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05465
FIIG:
A27300
Concept No.:
1
App. Key:
AG
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:
A
ESD:
ESD:
MMAC:
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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