Example and table with designation. Material: resistance class: 5 s according to UNI 3740 part 4; the nuts can be supplied in other resistance classes according to UNI 3740 part 4 or other material.
UNI 5595-1976 history
1976UNI 5595-1976 Slotted and castle hexagon nuts. Iso metric coarse thread. Product grade c.