Machine Design
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as

Wood ruff key
Feather key
Gib-head key
Flat saddle key

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Machine Design
In cross or regular lay ropes

Wires are not twisted
Direction of twist of wires in strands is opposite to the direction of twist of strands
Wires in two adjacent strands are twisted in opposite direction
Direction of twist of wires and strands are same

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