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NSN: 3040-00-001-6518
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Part Numbers

Item Number Item Description
666230-270 Shaft, Straight

Master Requirement Codes

Code Translation
AAHN A term used to identify the ends as identical or not identical.
AMDL The length of a straight line which passes through the center of the first end, and terminates at the circumference.
AMEB A measurement between specified points of the hole at the first end, in distinction from height.
AMDX The length of a straight line which passes through the center of a hole or body of the first end, and terminates at the circumference.
AAGZ The style designation indicating the configuration that most nearly corresponds to the appearance of the first end.
MATT The chemical compound or mechanical mixture properties of which the item is fabricated.
AMFZ The length of a straight line which passes through the center of the second end, and terminates at the circumference.
AMFP A measurement of the longest dimension of the flat at the second end, in distinction from width.
AAHP The style designation indicating the configuration that most nearly corresponds to the appearance of the second end.
ABHP The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
FEAT Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
CSYM Designates the specific surface roughness rating, representing the arithmetic average deviation of the surface from the meanline in profile.

666230-270 Straight Shaft

Cage 59927

Technical Definition

Shaft, Straight, also referenced with federal logistics item name code 22109 - A straight shaft having two or more of the following conditions: a specified surface finish designation in the range of 1 to 125 microinches (o.o25 to 3.2 micrometers), arithmetical average (aa), machined peripheral flat(s), circular groove (s), keyway(s), splines, threads, or holes. it is not designed for use in aligning by fitting into corresponding holes of another item. it may be drilled for lubricating holes. for items having an integral gear(s) or worm(s), see gearshaft (as modified). for items designed to support rotating members see axle(1), straight. for items not having the above conditions see pin, straight, headless. for items having machined ends which constitute steps see shaft(1), shouldered; axle(1), shouldered; and bolt, fluid passage.

Technical Characteristics

End Similarity (AAHN):
Not identical
First End Distance From Hole Center To End (AMDZ):
0.920 inches nominal
First End Diameter (AMDL):
0.1874 inches nominal
First End Hole Depth (AMEB):
0.188 inches nominal
First End Hole Diameter (AMDX):
0.0950 inches nominal
First End Style (AAGZ):
Unthreaded cross drilled
Material (MATT):
Steel
Second End Distance From End To Groove (AMFQ):
0.377 inches nominal
Second End Diameter (AMFZ):
0.1871 inches minimum and 0.1874 inches maximum
Second End Flat Depth (AMFN):
0.0093 inches nominal
Second End Flat Length (AMFP):
0.206 inches nominal
Second End Groove Diameter (AAHX):
0.1480 inches nominal
Second End Groove Width (AAHW):
0.0312 inches nominal
Second End Style (AAHP):
Circular grooved and flatted
Overall Length (ABHP):
4.220 inches nominal
Special Features (FEAT):
First end two cross drilled holes,0.0950 in. dia; 0.188 in. depth; 0.146 in. distance from hole center to end
Surface Finish (CSYM):
32.0 microinches

National Stock Number (NSN)

3040-00-001-6518