Model: 7B6253

Helical Gear

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
19.3626 inches
Teeth Quantity
112
Bore Style
W/counterbore counterbore, first end
Hardness Rating
48.5 rockwell c and 59.2 rockwell c
Mounting Hole Type And Quantity
12 plain axially through body, first end
Outside Diameter
19.5925 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
20.0000 degrees
Helix Angle
15.4077 degrees
Face Width
0.938 inches
Bore Diameter
16.419 inches counterbore, first end
Counterbore Depth
0.310 inches counterbore, first end
Counterbore Diameter
8.125 inches counterbore, first end
Mounting Hole Diameter
0.377 inches axially through body, first end
Bolt Hole Circle Diameter
17.188 inches axially through body, first end
Material
Steel comp 1040
Material Specification
Fed standard 66 federal standard single material response
Style Designator
Hubless
NSN
3020-00-362-8021
Part Number
7B6253
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 7B6253 NSN 3020-00-362-8021

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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