"SP 46 : 2003" is special publication of Bureau of Indian Standards (B.I.S.) released in the year 2003. The ISBN number is 8170610192 number of pages 205 and MRP is Rs. 1440=00. It is the composition of some of the standards felt by B.I.S. necessary for Engineering Drawing Practice for schools and colleges. It can be purchased from any leading offices of B.I.S. or via post from 9 Bahadur Shah Zafar Marg, New Delhi 110002.
Prior to this SP 46 : 1988 and IS 696 : 1972 were used in the Engineering Drawing Practices.The contents of the book are as follows
- Sizes and layout of drawing sheets
- Item references on drawing and item lists
- Planning of assembly drawings
- folding of drawing prints
- scales
- lines
- lettering
- projection methods
- sections and other conventions
- conventional representation of screw threads and threaded parts
- conventional representation of springs
- conventional representation of gears
- general principle of dimensioning
- indication of linear and angular tolerances
- dimensioning of gears
- indication of surface texture
- simplified representation of the assembly of parts with fasteners
- simplified representation of bars and profile sections
- symbolic representation of welded, brazed and soldered joints
- abbrevations, systems of limits and fits, tolerances etc.
As B.I.S. is continuously making efforts to update the standards, so some of the standards specified in SP 46 : 2003 might replaced/modified. Therefore, it is also necessary to go through the individual publications of B.I.S., especially those published after 2003.
