Model: 1937-2A21

Spur Gear

Properties:

Body Style
Plain, solid
Pitch Diameter
3.0000 inches
Teeth Quantity
144
Bore Style
W/ keyway both ends
Backlash Designation
Grade a
Outside Diameter
3.042 inches
Nominallength
0.500 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.313 inches first end
Face Width
0.187 inches
Bore Diameter
0.240 inches both ends
Keyway Width
0.062 inches both ends
Distance From Bore Center To Keyway Bottom
0.196 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
0.625 inches first end
Precision Classification
Quality number 6 or quality number 7
Material
Copper alloy 462 or copper alloy 464 or copper alloy 482 or copper alloy 485
Material Specification
Qq-b-613 federal specification single material response
Style Designator
Protruding hub
NSN
3020-00-049-8519
Part Number
1937-2A21
Description
Gear,spur
CAGE
06003

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 1937-2A21 NSN 3020-00-049-8519

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:
197337
UFC:
96690
LTL:
RATING VARIABLE
LCL:
92.5
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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