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Body Hub NSN 3040-01-273-1178

Item Description

A cylindrical shoulder type item designed to be mounted and secured directly on a shaft or axle to position and retain on its body a gear(s), wheel(s), or the like. Items must have a method of securing directly to the shaft; however, a pilot hole drilled in or through the wall of the shoulder may be considered a method of securing; or by compressing the slotted hub end on the shaft by a hub clamp, which may or may not be included. Excludes bearing, sleeve; bushing, sleeve; and collar, shaft.

NSN 3040-01-273-1178 NSN: 3040-01-273-1178

Features and Characteristics

Shoulder Width
Between 0.554 inches and 0.570 inches
Shoulder Outside Diameter
Between 0.742 inches and 0.758 inches
Hub Inside Diameter
Between 0.189 inches and 0.191 inches
First End Hub Outside Diameter
Between 0.278 inches and 0.280 inches
Distance From First End Hub To Shoulder
Between 0.555 inches and 0.571 inches
Special Features
No.4-40 unc-2b mounting holes are aligned in the shoulder face 89.0 degrees min -91 degrees max apart 0.160 in.Min-0.200 in.Max deep on a 0.462 in.Min -0.478 in.Max dia; shoulder face and back and hub end are chamfered at 0.010 in.Min -0.050 in.Max44 degrees min-46 degrees max; shaft access is chamfered at 0.000 in.-0.040in.Max 44 deg.Min -46 degrees max both ends; hub is offset from center against shoulder by 0.013 in.Min, 0.017 degrees max to form an eccentric; securing hole qty: 1; o/a length: 1.117 in.Min, 1.133 in.Max; securing hole size: 4-40 unc-2b
Material
Steel
Material Specification
Comp 303 federal specification single material response
Surface Treatment
Passivate
Style Designator
Single hub w/ securing hol (s)
FSC
3040 Miscellaneous Power Transmission Equipment
NIIN
012731178
NSN
3040012731178

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
625-8504-001
Cage Code:
13499
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8483905000
  • NAICS: 333612
  • SITC: 74890
  • Description: Parts of gearing, gear boxes and other speed changers
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 3040-01-273-1178
What are the manufacturers of nsn 3040012731178?
Does this nsn 3040012731178 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3040012731178
A cylindrical shoulder type item designed to be mounted and secured directly on a shaft or axle to position and retain on its body a gear(s), wheel(s), or the like. items must have a method of securing directly to the shaft; however, a pilot hole drilled in or through the wall of the shoulder may be considered a method of securing; or by compressing the slotted hub end on the shaft by a hub clamp, which may or may not be included. excludes bearing, sleeve; bushing, sleeve; and collar, shaft.
Does nsn 3040012731178 contain any precious metals?
Precious metal content is unknown.
Does nsn 3040012731178 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3040012731178?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
27782
FIIG:
A523Y0
App. Key:
Cond. Code:
2
Status:
A

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