Machine Design
Machine screws are

Similar to stud
Slotted for a screw driver and generally used with a nut
Similar to small size tap bolts except that a greater variety of shapes of heads are available
Used to prevent relative motion between two parts

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Machine Design
In order to determine the stresses in a thin cylinder due to an internal pressure, it is assumed that

All of these
The tensile stresses are uniformly distributed over the section of the walls
The effect of the restraining action of the heads at the end of the pressure vessel is neglected
The effect of curvature of the cylinder wall is neglected

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Machine Design
Plastic flow in ductile materials

Depends on other considerations
Has no effect on it
Lessens the seriousness of static loading stress concentration
Increases the seriousness of static loading stress concentration

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