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ASME B18.25.3M
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ASME B18.25.3M 98th Edition, 2003 Square and Rectangular Keys and Keyways: Width Tolerances and Deviations Greater than Basic Size
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Description / Abstract:
This Standard covers requirements for square and rectangular
parallel keys and keyways intended for both alignment of shafts and
hubs, and transmitting torque between shafts and hubs.
Keys covered by this Standard have a relatively loose width tolerance. All width tolerances are positive. Keys with minus width tolerances and a smaller tolerance range are covered by ASME B 18.25.lM.
The inclusion of dimensional data in this Standard is not intended to imply that all sizes described are production stock items. Consumers should consult with suppliers concerning lists of stock items.
Keys covered by this Standard have a relatively loose width tolerance. All width tolerances are positive. Keys with minus width tolerances and a smaller tolerance range are covered by ASME B 18.25.lM.
The inclusion of dimensional data in this Standard is not intended to imply that all sizes described are production stock items. Consumers should consult with suppliers concerning lists of stock items.