Standardization. Interchangeability. Selective Assembly. Tolerance. Tolerance of form and position. Grades of tolerance. Fits. Standard tolerances. Machining symbols. Surface finish indication. Functional and manufacturing datum.


Shaft couplings : Rigid, Flexible. Cotter joints. Knuckle joints. Hook's joints. Bearings. Journal. Footstep, Thrust or Collar bearing. Plummer block. Pulleys for flat belts. Vee belt and rope. Engine parts : Stuffing box. Connecting rod. Atomizer. Spark plug. Fuel injection pump. Valves : Stop safety valve. Relief valve. Non return valve. Machine tool components : Drill jig., Tail stock. Tool post. Tool head for shaping machine. Machine vice. Screw jack.


1. Dhawan, RK., A Text Book of Machine Drawing, S. Chand & Company, 1996.
2. Ostrowsky, 0., Engineering Drawing with CAD Applications, ELBS, 1995.