Contents Threaded Fasteners and Power Screws 。 Rivets Springs Sliding Bearings Rolling-Element Bearings Spur Gears 。 Helical,Bevel,and Worm Gears Shafts and Associated Parts Clutches and Brakes Miscellaneous Power Transmission Components Introduction to Engineering2 Introduction to Engineering Contents • Threaded Fasteners and Power Screws • Rivets • Springs • Sliding Bearings • Rolling-Element Bearings • Spur Gears • Helical, Bevel, and Worm Gears • Shafts and Associated Parts • Clutches and Brakes • Miscellaneous Power Transmission Components