Model: 4H7953

Helical Gear

Special Features:

Counterbore first end, dia. 1.500 in. , depth 0.415 in.

Properties:

Body Style
Plain, solid
Spline Quantity
15 both ends
Pitch Diameter
2.0746 inches
Teeth Quantity
12
Bore Style
Involute spline both ends
Spline Pitch Diameter
1.2500 inches both ends
Hardness Rating
59.0 rockwell c and 64.0 rockwell c
Outside Diameter
2.323 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
15.4082 degrees
Distance Between Body Face And Protruding Hub End
1.063 inches first end
Face Width
1.500 inches
Bore Diameter
1.333 inches both ends
Hub Style Designator
1 groove first end
Hub Style Designator
Plain second end
Hub Diameter
1.688 inches second end
First Groove Width
0.093 inches first end
First Groove Diameter
1.529 inches first end
Distance From End To First Groove
0.137 inches first end
Material
Steel comp 8617h
Material Specification
66 federal standard single material response
Surface Treatment
Zinc
Style Designator
Protruding hubs
NSN
3020-00-853-1937
Part Number
4H7953
Description
Gear,helical
CAGE
11083

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 4H7953 NSN 3020-00-853-1937

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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