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

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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:

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?

Rockwell Collins, Inc. (13499)

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:

Status:

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Certificate of Conformance
Quality Inspected Parts
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