Model: 3010931

Spur Antibacklash Gear

Properties:

Attachment Method
Clamp and mounting hole
Pitch Diameter
1.2500 inches
Teeth Quantity
80
Bore Style
Plain both ends
Mounting Hole Thread Series Designator
Unc transversely through hub, first end
Mounting Hole Thread Size
0.086 inches transversely through hub, first end
Mounting Hole Type And Quantity
2 threaded transversely through hub, first end
Outside Diameter
1.280 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.313 inches first end
Distance Between Body Face And Protruding Hub End
0.063 inches second end
Face Width
0.124 inches
Bore Diameter
0.125 inches both ends
Hub Style Designator
Split first end
Hub Diameter
0.430 inches first end
Clamping Surface Length
0.265 inches first end
Precision Classification
Quality number 10
Material
Aluminum alloy 6061
Material Specification
Qq-a-225/8, t6 federal specification single material response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response
Style Designator
Protruding hubs
NSN
3020-00-431-6200
Part Number
3010931
Description
Gear,antibacklash,spur
CAGE
82577

An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

Part 3010931 NSN 3020-00-431-6200

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
26668
FIIG:
A27300
Concept No.:
App. Key:
AC
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:
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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