Model: 6556490

Worm Wheel Gear

Special Features:

Used on valve operator

Properties:

Body Style
Plain, solid
Spline Quantity
60 both ends
End Application
Weapons system seawolf class ssn
Pitch Diameter
7.6250 inches
Teeth Quantity
40
Face Type
Concave
Bore Style
Involute spline both ends
Spline Pitch Diameter
6.0000 inches both ends
Hardness Rating
175.0 brinell hultgren and 250.0 brinell hultgren
Outside Diameter
8.197 inches
Tooth Direction
Left
Throat Radius
1.112 inches
Pressure Angle
20.0000 degrees
Helix Angle
4.2500 degrees
Face Width
2.052 inches
Bore Diameter
5.900 inches both ends
Material
Bronze
Material Specification
Astm b271 assn standard 1st material response and astm b148 assn standard 2nd material response
Style Designator
Hubless
NSN
3020-01-414-4395
Part Number
6556490
Description
Gear,worm Wheel
CAGE
53711

A gear, cylindrical in form, with spiral teeth designed to mesh with the thread forms of a gear (1), worm. See also gear, antibacklash, worm wheel.

Part 6556490 NSN 3020-01-414-4395

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05468
FIIG:
A27300
Concept No.:
1
App. Key:
AK
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:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197339
UFC:
96710
LTL:
65.0
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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