Model: A31228

Spur Gear

Special Features:

Bore of gear second end countersunk by 45 degrees to 0.094 inch depth

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
Between 0.9940 inches and 1.0000 inches
Teeth Quantity
12
Bore Style
Plain both ends
Hardness Rating
38.0 rockwell c and 42.0 rockwell c
Hardness Rating
38.0 rockwell c and 42.0 rockwell c
Mounting Hole Type And Quantity
4 plain transversely through hub, first end
Outside Diameter
1.160 inches
Nominallength
1.188 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.688 inches first end
Face Width
0.500 inches
Bore Diameter
0.501 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
0.750 inches first end
Mounting Hole Diameter
0.158 inches transversely through hub, first end
Material
Steel
Surface Treatment
Phosphate manganese and phosphate zinc
Surface Treatment Specification
Mil-p-16232, type z, class 1 military specification single treatment response and mil-p-16232, type m, class 1 military specification single treatment response
Style Designator
Protruding hub
NSN
3020-00-531-0848
Part Number
A31228
Description
Gear,spur
CAGE
53397

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 A31228 NSN 3020-00-531-0848

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
121870
UFC:
64910
LTL:
77.5
LCL:
70.0
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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