Model: A554-56

Spur Gear

Special Features:

One number 0 taper hole located on hub portion of gear between hub end and face

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
2.5000 inches
Teeth Quantity
80
Bore Style
Plain both ends
Mounting Hole Thread Series Designator
Unc transversely through hub, first end
Mounting Hole Thready Qty Per Inch (tpi)
40 transversely through hub, first end
Mounting Hole Thread Size
0.112 inches transversely through hub, first end
Mounting Hole Type And Quantity
1 threaded transversely through hub, first end
Outside Diameter
2.561 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.309 inches first end
Face Width
0.189 inches
Bore Diameter
0.375 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
0.750 inches first end
Precision Classification
Quality number 5 or quality number 6
Material
Aluminum alloy 6061
Material Specification
Qq-a-250/11, t6 federal specification single material response
Surface Treatment
Anodize
Style Designator
Protruding hub
NSN
3020-00-753-2280
Part Number
A554-56
Description
Gear,spur
CAGE
34228

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 A554-56 NSN 3020-00-753-2280

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

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