what is differanse between matric thin and thick pith in threded hole command in catia v5?
think like this. you have a bolt with different pitch size. let's says these pitch 1-1,5-2-2,5-3 and 4. totally 6 different pitch size. biggest number is considered as "thick pitch" and the others are thin. so there is only one thick pitch and many thin. if you check thick and thin pitch list you will see like this. in thick pitch list shows only M6, M8, etc. but in thin pitch list there is M6x1, M6x1,5, M8x1, M8x1,5, etc.