Machine Design
The acme threads are usually found on

Railway carriage couplings
Feed mechanism of machine tools
Spindles of bench vices
Screw cutting lathes

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Machine Design
A stud

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
According to Rankine's theory, the failure occurs at a point in a member

When the maximum principal stress in a biaxial stress system reaches the elastic limit of the material in a simple tension test
When the maximum principal strain in a biaxial stress system reaches the strain at the elastic limit as determined from a simple tension test
When the strain energy per unit volume in a biaxial stress system reaches the strain energy at the elastic limit per unit volume as determined from a simple tension test
When the maximum shear stress in a biaxial stress system reaches the shear stress at elastic limit in a simple tension test

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Machine Design
Coaxing is the procedure of increasing

Fatigue limit by over-stressing the metal by successively increasing loadings
Metal resistance to corrosion by coating
Metal hardness by surface treatment
Metal strength by cycling

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