Model: 2531

Helical Gear

Properties:

Body Style
Spoked
Pitch Diameter
12.1670 inches
Teeth Quantity
73
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Outside Diameter
12.4320 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
20.0000 degrees
Helix Angle
23.0000 degrees
Distance Between Body Face And Protruding Hub End
0.125 inches first end
Face Width
1.250 inches
Bore Diameter
3.4975 inches first end
Keyway Width
0.875 inches first end
Distance From Bore Center To Keyway Bottom
0.518 inches first end
Hub Style Designator
Plain both ends
Hub Diameter
5.000 inches first end
Hub Diameter
5.000 inches second end
Material
Steel
Material Specification
Mil-s-15083, grade b military specification single material response
Style Designator
One protruding hub, one flush hub
NSN
3020-00-251-0872
Part Number
2531
Description
Gear,helical
CAGE
16603

A gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also gear, antibacklash, helical:

Part 2531 NSN 3020-00-251-0872

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05464
FIIG:
A27300
Concept No.:
1
App. Key:
AF
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:
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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