Model: 12M2246-9

Worm Shaft

Properties:

End Similarity
Identical
Spline Major Diameter
0.364 inches both ends, first portion
Spline Major Diameter
0.367 inches both ends, first portion
Overall Length
3.945 inches
Spline Minor Diameter
0.294 inches both ends, first portion
Spline Minor Diameter
0.302 inches both ends, first portion
Worm Thread Quantity
2
Worm Thread Direction
Left-hand
Worm Pressure Angle In Deg
20.000
Worm Outside Diameter
Between 0.495 inches and 0.498 inches
Worm Pitch Diameter
0.417 inches
Shaft Location
Both ends of worm
Straight Spline Quantity
11 both ends
Material
Steel
NSN
3040-00-488-4104
Part Number
12M2246-9
Description
Worm Shaft
CAGE
81755

A drive shaft having helical thread(s) on a portion of its outer surface, machined bearing surface(s) and facilities for driving (other than a hub) on one or both ends of shaft. Designed to mate with a cam, gear sector, worm wheel, etc. Includes items with bearings. Excludes items having more than one worm complement of helical threads, items with a separate complement of gear teeth, and gear, worm.

Part 12M2246-9 NSN 3040-00-488-4104

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
18249
FIIG:
T246-C
Concept No.:
App. Key:
CA
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

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Schedule B and Export
  • Schedule B: 8483105000
  • SITC: 74810
  • End Use: Industrial machines, other
  • NAICS: 333613
  • USDA: 1

Freight Class: Transmission shafts and cranks, except camshafts and crankshafts

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