For Industrial applications this is not required.Only if, these are used in Military,Aerospace or similar applications this will be required.OK. Here we stop at Threaded Coupling connectors. Now this threaded Coupling connectors Insert Range is also available in Bayonet Coupling instead of Threaded Coupling which is required for Quick coupling (180 degrees)rotation. Ref pages XX. In this we are having some selected items for which you have to refer to Factory. Having acqired indeapth knowledge about MS Connectors, Now we should go to some important points to be remembered before putting them in the Electronic systems.As we have seen earlier that these connectors are Robust & can be used in Defence as well as Non defence applications. But still we consider it's utility in following consideratios;
10.1) Current Rating. Size 16 - 13Amp ; size 12- 23Amp ; size-8 - 43Amp ; Size 4 - 83Amp
While putting these connectors in circuit, factor
          of safety is to be taken into account depending on application.If ambient
temp. is high 40-50 degrees , the Insert temp. tends to
          rise due to many contacts carrying current, increasing further it's
Hot Spot temp.in the core of Insert which might affect the
          performance of connector .
10.2) Voltage Rating: INST- 300V AC , A - 500 VAC C - 900V AC D-1250V AC
For voltage rating also similar factor of safety to be considered.
10.3) Insulation: For Temperatures upto100-125 deg. Cent. Polychloroprene Ruber is used & for higher temperatures Silicone Ruber
          Inserts are used.
10.4) Environment: For saline,gaseous,fungal or other extreme weather conditions Gold plated contacts are recommended.