Model: 291KD1157

Worm Gear

Special Features:

Sides to be parallel and at right angles to bore within .002 t.I.R.; modify tooth cut to provide from .002 - .006 backlash

Properties:

End Application
Argo tach and tc 15 series
Pitch Diameter
Between 2.1570 inches and 2.1580 inches
Outside Diameter
3.202 inches
Face Width
0.844 inches
Part Name Assigned By Controlling Agency
Speedometer drive worm
Material
Steel
Style Designator
Hubless
NSN
3020-01-552-7959
Part Number
291KD1157
Description
Gear,worm
CAGE
89619

A gear with teeth on its outer surface in the form of helical threads.

Part 291KD1157 NSN 3020-01-552-7959

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05467
FIIG:
A27300
Concept No.:
1
App. Key:
AJ
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:
A
ESD:
A
MMAC:
CRITL:
X

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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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