Model: 238255

Helical Gear

Properties:

Body Style
Webbed, solid
Attachment Method
Mounting hole
Pitch Diameter
3.6990 inches
Teeth Quantity
45
Bore Style
Tapered w/keyway first end
Hardness Rating
285.0 brinell standard and 325.0 brinell standard
Mounting Hole Type And Quantity
4 plain axially through body, first end
Outside Diameter
3.844 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Helix Angle
28.1536 degrees
Distance Between Body Face And Protruding Hub End
0.125 inches first end
Face Width
0.875 inches
Keyway Width
0.251 inches first end
Distance From Bore Center To Keyway Bottom
0.730 inches first end
Taper Major Diameter
1.173 inches first end
Hub Style Designator
Plain both ends
Hub Diameter
1.736 inches second end
Mounting Hole Diameter
0.375 inches axially through body, first end
Bolt Hole Circle Diameter
2.500 inches axially through body, first end
Material
Steel
Material Specification
Mil-s-890, alloy no. 4 military specification single material response
Style Designator
One protruding hub, one flush hub
NSN
3020-00-969-2985
Part Number
238255
Description
Gear,helical
CAGE
21444

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 238255 NSN 3020-00-969-2985

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:
2.6000lbs
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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