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Shouldered Shaft NSN 3040-01-251-0557

Item Description

A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see axle(1), shouldered. For items not having any of the above conditions see pin, shoulder, headless. Excludes shaft(1), straight; and axle(1), straight.

NSN 3040-01-251-0557 NSN: 3040-01-251-0557

Features and Characteristics

First End Style
External threaded
End Similarity
Not identical
Second End Style
Two circular grooves, splined and internally threaded
Second End Groove Width
0.0470 inches
Second End Groove Diameter
0.4000 inches
Overall Length
1.490 inches
End Application
M1, m1a1, gps m1, gps m1a1, xm1 gps ext
First End Diameter
0.4375 inches
First End External Thread Length
0.640 inches
Second End Distance From End To Groove
0.380 inches
Second End Diameter
0.6300 inches
Second End Spline Length
0.380 inches
Second End Spline Minor Diameter
0.4310 inches
Second End Spline Major Diameter
0.5420 inches
Second End Internal Thread Length
0.250 inches
Second End Distance Between First And Second Groove Centers
0.378 inches
Step Quantity
5
Second End Spline Quantity
12
Largest Step Diameter
0.630 inches
Material
Stainless steel
FSC
3040 Miscellaneous Power Transmission Equipment
NIIN
012510557
NSN
3040012510557

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
9377156
Cage Code:
19200
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 3040-01-251-0557
What are the manufacturers of nsn 3040012510557?
Does this nsn 3040012510557 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3040012510557
A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. it must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. the ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. it is not designed for use in aligning by fitting into corresponding holes of another item. for items used to support rotating members see axle(1), shouldered. for items not having any of the above conditions see pin, shoulder, headless. excludes shaft(1), straight; and axle(1), straight.
Does nsn 3040012510557 contain any precious metals?
No precious metal content.
Does nsn 3040012510557 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3040012510557?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22914
FIIG:
A23200
App. Key:
A
Cond. Code:
1
Status:
A

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