Machine Design
In cross or regular lay ropes

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

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Machine Design
A bolt

Has head at one end and other end fits into a tapped hole in the other part to be joined
Is provided with pointed threads
Has a head on one end and a nut fitted to the other
Has both the ends threaded

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