THREADED FASTENERS

• Introduction to threaded fasteners - types, nomenclature and the basic geometry of ISO Metric and some power screw threads
• The mechanics of screw threads illustrating the dominant effect of friction
• Strength classes and static failure of steel screws
• The dependence of bolt loading on the indeterminate assembly - preload and calculation of component stiffness
• Tightening - preload and its control by torque measurement, nut rotation and other methods
• The role of component stiffnesses in fluid pressurised joints, and the concept of joint factor
• Bolt fatigue via Goodman analysis.
• The behaviour of non-uniformly loaded bolt groups - torsion and bending.

• Bibliography
• Problems
• Solutions

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