To make engineering design simple and accurate WSL have developed wide range of design software packages for the mechanical industry.The software for designing joints and couplings is one with which designing engineer can design all types of joints and couplings with ease and accuracy. Typical methods of fastening includes the use of various joints and couplings. The design of these fasteners requires keen attention to prevent the failures in systems leakage, ruptures, misalignment, shock load etc. WSL's design package has made this task easy and covers all the following fasteners