Model: 18D1661

Internal Gear

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
25.0000 inches
Teeth Quantity
100
Mounting Hole Thread Series Designator
Unf axially through flange
Hardness Rating
27.0 rockwell c and 29.0 rockwell c
Mounting Hole Thread Size
0.5000 inches axially through flange
Mounting Hole Type And Quantity
12 plain axially through flange and 3 threaded axially through flange
Outside Diameter
27.0000 inches
Nominallength
2.5000 inches
Teeth Type
Spur
Tooth Form
Stub
Flange Diameter
32.4990 inches
Pressure Angle
20.0000 degrees
Flange Thickness
1.375 inches
Mounting Hole Diameter
0.6250 inches axially through flange
Bolt Hole Circle Diameter
31.2500 inches axially through flange
Material
Steel comp 4140
Material Specification
66 federal standard single material response and aisi/sae 4140 assn standard single material response
Style Designator
Flanged ring
NSN
3020-00-274-6470
Part Number
18D1661
Description
Gear,internal
CAGE
16603

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

Part 18D1661 NSN 3020-00-274-6470

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:
U
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:
Construction Materials

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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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