National Item Identification Number

01-288-3931
012883931
3040-01-288-3931
3040012883931

National Stock Number

Item Name

SHAFT,SHOULDERED

Federal Supply Class

3040

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.

Commercial and Government Entity Code (Supplier Data)

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Reference Numbers (Part Numbers)

H-2650-1540 PIECE 34
218504-0-01

Required Categories

MATERIAL
FIRST END STYLE
END SIMILARITY
LARGEST STEP DIAMETER
OVERALL LENGTH

Required Description

STEEL
6 WOODRUFF KEYWAY
NOT IDENTICAL
2.000 INCHES NOMINAL
18.812 INCHES NOM