Model: 2540040

Worm Shaft

Properties:

End Similarity
Not identical
Overall Length
4.172 inches
Teeth Hardness Rating
Between 48.0 rockwell c and 52.0 rockwell c
Worm Thread Quantity
1
Worm Thread Lead
0.1963 inches
Worm Thread Direction
Right-hand
Worm Pressure Angle In Deg
14.500
Worm Helix Angle
5 degrees 43 min
Worm Outside Diameter
Between 0.749 inches and 0.750 inches
Worm Pitch Diameter
0.6250 inches
Worm Thread Section Length
Between 1.850 inches and 1.870 inches
Worm Body Length
Between 1.847 inches and 1.857 inches
Worm Body Tapered Bearing Surface End
Not provided
Shaft Location
Both ends of worm
Straight Unthreaded Length
0.390 inches second end, first portion
Straight Unthreaded Length
0.500 inches second end, second portion
Straight Unthreaded Length
0.630 inches first end, first portion
Straight Unthreaded Length
0.770 inches first end, second portion
Straight Unthreaded Section Diameter
0.2400 inches first end, second portion
Straight Unthreaded Section Diameter
0.3123 inches second end, second portion
Straight Unthreaded Section Diameter
0.3747 inches second end, first portion
Straight Unthreaded Section Diameter
0.3747 inches first end, first portion
Unthreaded Section Pin Hole Diameter
0.0634 inches second end and 0.0636 inches second end
Material
Steel
Material
Steel
Surface Treatment
Anodize
Surface Treatment
Anodized
NSN
3040-01-303-7501
Part Number
2540040
Description
Worm Shaft
CAGE
10001

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 2540040 NSN 3040-01-303-7501

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:
U
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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