Model: 74639-1

Worm Gear

Properties:

Pitch Diameter
Between 0.9990 inches and 1.0000 inches
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Outside Diameter
1.166 inches
Thread Form Quantity
2
Thread Form Direction
Right-hand
Pressure Angle
14.5000 degrees
Helix Angle
9.4667 degrees
Face Width
1.190 inches
Bore Diameter
0.626 inches both ends
Keyway Width
0.126 inches both ends
Distance From Bore Center To Keyway Bottom
0.343 inches both ends
Material
Steel comp 316
Material Specification
Qq-s-763, class 316 federal specification single material response
Style Designator
Hubless
NSN
3020-00-209-0998
Part Number
74639-1
Description
Gear,worm
CAGE
82340

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

Part 74639-1 NSN 3020-00-209-0998

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197339
UFC:
96710
LTL:
65.0
LCL:
60.0
WCC:
593
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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