Machine Design
The resultant axial load on a bolt depends upon

External load applied
All of these
Initial tension due to tightening of the bolt
Relative elastic yielding of the bolt and the connected members

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Machine Design
A tap bolt

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

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Machine Design
In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged belt because

New and old belts will cause vibrations
Only one belt cannot be fitted with other used belts
The new belt will carry more than its share and result in short life
Belts are available in sets

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