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## Homework Statement

A flange coupling is use to transmit torque of 1500 Nm between two shafts. The coupling has four 8mm dia. bolts equally spaced on a PCD of 175mm. Determine the shear stress on the bolts

## Homework Equations

[itex]fs=\frac{F}{A}[/itex]

## The Attempt at a Solution

Back of the book answer = 85.3MPa. but I don't know how they get this answer.