Model: 6556499

Internal Gear

Special Features:

Hub end external threaded 5.750-12 un-2a, and 60 splines between first and second groove, gear used on valve operator

Properties:

Body Style
Webbed, offset, solid
End Application
Weapons system seawolf class ssn
Pitch Diameter
9.2500 inches
Teeth Quantity
74
Bore Style
W/counterbore second end
Hardness Rating
28.0 rockwell c body and 48.0 rockwell c body
Outside Diameter
10.630 inches
Nominallength
5.336 inches
Teeth Type
Spur
Tooth Form
Stub
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
2.894 inches second end
Face Width
1.630 inches
Bore Diameter
4.500 inches second end
Counterbore Depth
0.943 inches counter bore, second end
Counterbore Diameter
4.801 inches counter bore, second end
Hub Style Designator
2 grooves second end
Hub Diameter
5.750 inches second end
Precision Classification
Accuracy grade 10
First Groove Width
0.120 inches
First Groove Diameter
5.720 inches second end
Distance From End To First Groove
0.390 inches
Second Groove Width
0.220 inches second end
Second Groove Diameter
5.720 inches second end
Distance From End To Second Groove
2.122 inches
Material
Steel comp 4140 and steel comp 4142
Material Specification
Astm a322 assn standard single material response
Style Designator
Solid back ring, protruding hub
NSN
3020-01-414-7959
Part Number
6556499
Description
Gear,internal
CAGE
53711

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

Part 6556499 NSN 3020-01-414-7959

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:
12.0 X 12.0 X 7.0
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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