Immediate action: We have 350-nos packed that are ready for dispatch on the 29th. Above this neither we have any quantity in stock or in WIP. We confirm that all the 350 no’s have been checked by thread pitch micrometer also apart from the usual three pin checking method. We have also checked for burs on the holes that are put across the treads and there seems to be no problem.






Corrective Action:  
Cross verification of Thread pitch micrometer purchasing details
The thread pitch micrometer calibration history card records are checked.
Thread profile is checked for particular components.
The tolerance for the production on the thread is as follows, effective dia 18.161/18.205  but required is 18.141/18.225 
