Model: 549312

Spur Gear

Special Features:

Unthreaded hole 90 degrees from threaded hole

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
Between 1.8743 inches and 1.8750 inches
Teeth Quantity
120
Bore Style
Plain both ends
Mounting Hole Thread Series Designator
Unc transversely through hub, first end
Mounting Hole Thready Qty Per Inch (tpi)
56 transversely through hub, first end
Mounting Hole Thread Size
0.086 inches transversely through hub, first end
Mounting Hole Type And Quantity
1 plain transversely through hub, first end and 1 threaded transversely through hub, first end
Outside Diameter
1.905 inches
Nominallength
0.312 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.187 inches first end
Face Width
0.125 inches
Bore Diameter
0.125 inches both ends
Hub Style Designator
Pinned first end
Hub Diameter
0.312 inches first end
Precision Classification
Quality number 12
Mounting Hole Diameter
0.029 inches transversely through hub, first end
Material
Aluminum alloy 2024
Material Specification
Qq-a-225/6, t4 federal specification single material response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response
Style Designator
Protruding hub
NSN
3020-00-890-2257
Part Number
549312
Description
Gear,spur
CAGE
1PQF4

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 549312 NSN 3020-00-890-2257

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:
062070
UFC:
64910
LTL:
RATING VARIABLE
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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