Machine Design
The shear plane in case of bolts should

Be across threaded portion of shank
Be normal to threaded portion of shank
Be parallel to axis of bolt
Never be across the threaded portion

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Machine Design
In composite or reverse laid ropes

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

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