National Item Identification Number
01-044-3939
010443939
1720-01-044-3939
1720010443939
National Stock Number
Item Name
SHAFT,STRAIGHT
Federal Supply Class
1720
Description
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.
Commercial and Government Entity Code (Supplier Data)
80020
Reference Numbers (Part Numbers)
423498-3
Required Categories
MATERIAL
SURFACE FINISH
FIRST END STYLE
FIRST END DIAMETER
END SIMILARITY
S
Required Description
STEEL
63.0 MICROINCHES
1 PLAIN
1.9950 INCHES NOMINAL
NOT IDENTICAL
5 CIRCUL