Zap PT42 Z-42 Blue Thread Locker .20oz (Box of 6)
Suppler In Stock 2-3 DaysPrevents the loosening of threaded hardware due to vibration. Blue (Z-42) is a medium locker whereas Red (Z-71) is a permanent locker. These are the best thread lockers available. For use up to 1/4-20 threaded hardware.