The original lockbolt was developed as an alternative to the conventional bolt and nut combinations, which exhibited some severe weaknesses. These included loss of preload under service load; setting and relaxation effects in thread; self-loosening effects under vibration load; and relative movement in the thread bearing area. Accufast Inc has been selling lockbolts across Western Canada for 30+ years and we are proud to be a Master Distributor with an In house repair facilit