Model: B121-278

Spur Gear

Properties:

Body Style
Plain, solid
Pitch Diameter
1.1250 inches
Teeth Quantity
36
Bore Style
Plain both ends
Hardness Rating
43.0 rockwell c and 47.0 rockwell c
Hardness Rating
43.0 rockwell c and 47.0 rockwell c
Outside Diameter
1.187 inches
Tooth Form
Standard
Pressure Angle
14.5000 degrees
Distance Between Body Face And Protruding Hub End
0.613 inches first end
Distance Between Body Face And Recessed Hub End
0.078 inches second end
Face Width
0.187 inches
Bore Diameter
0.251 inches both ends
Hub Style Designator
1 step first end
Hub Style Designator
Plain second end
Hub Diameter
0.344 inches second end
End Length
0.267 inches first end
Precision Classification
Quality number 8
End Diameter
0.375 inches first end
First Step Length
0.346 inches first end
First Step Diameter
0.500 inches first end
Material
Steel comp 1335
Material Specification
Fed standard 66 federal standard single material response
Surface Treatment
Passivate
Style Designator
One protruding hub, one recessed hub
NSN
3020-00-167-0430
Part Number
B121-278
Description
Gear,spur
CAGE
72314

A gear, cylindrical in form, with straight teeth on the outer surface parallel to the axis of the gear. See also gear, antibacklash, spur. For bulk material, see rod, pinion.

Part B121-278 NSN 3020-00-167-0430

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05466
FIIG:
A27300
Concept No.:
1
App. Key:
AH
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:
A
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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