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Worm Shaft NSN 3040-00-991-6741

Item Description

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.

NSN 3040-00-991-6741 NSN: 3040-00-991-6741

Features and Characteristics

End Similarity
Not identical
Thread Length
0.582 inches second end, seventh portion
Overall Length
7.188 inches
Taper Length
0.125 inches second end, fourth portion
Err Default
Err default
Keyway Width
0.204 inches second end, sixth portion
Keyway Depth
0.093 inches second end, sixth portion
Screw Thread Series Designator
Unf second end, seventh portion
Shaft Thread Direction
Right-hand second end, seventh portion
Teeth Hardness Rating
Between 55.0 rockwell c and 62.0 rockwell c
Worm Thread Quantity
1
Worm Thread Lead
0.3938 inches
Worm Thread Direction
Left-hand
Worm Pressure Angle In Deg
14.500
Worm Helix Angle
85 degrees 45 min
Worm Outside Diameter
Between 1.932 inches and 1.936 inches
Worm Pitch Diameter
1.687 inches
Worm Thread Section Length
2.000 inches
Worm Body Length
2.000 inches
Worm Body Tapered Bearing Surface End
Not provided
Shaft Location
Both ends of worm
Straight Unthreaded Length
0.881 inches first end, second portion
Straight Unthreaded Section Diameter
1.250 inches second end, first portion
Unthreaded Section Keyway Width
0.1569 inches second end, third portion
Unthreaded Section Keyway Depth
0.179 inches second end, third portion
Taper Largest Diameter
0.874 inches second end, fourth portion
Special Features
Fourth portion, first end, chamfered to 0.062 by 45 deg
Material
Steel, qq-s-624, fs4617, fs4620, fs8617, fs8620 or fs8720
Material
Steel, qq-s-624, fs4617, fs4620, fs8617, fs8620 or fs8720
Surface Treatment
Oil
Surface Treatment
Lubricant, impregnated
Fsc Application Data
Traversing mechanism, machine gun
FSC
3040 Miscellaneous Power Transmission Equipment
NIIN
009916741
NSN
3040009916741

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
10930650
Cage Code:
19207
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8483105000
  • NAICS: 333613
  • SITC: 74810
  • Description: Transmission shafts and cranks, except camshafts and crankshafts
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 3040-00-991-6741
What are the manufacturers of nsn 3040009916741?
Does this nsn 3040009916741 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3040009916741
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.
Does nsn 3040009916741 contain any precious metals?
No precious metal content.
Does nsn 3040009916741 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3040009916741?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
18249
FIIG:
T246-C
App. Key:
CA
Cond. Code:
1
Status:
A

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  •   Quality Inspected Parts
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