UNI 5590/UNI 5597 DT Fasteners\' UNI hex nuts are mainly manufactured in line with the requirements of the Italian Standardization Association, which was founded in 1921. Headquartered in Milan, it is the standardization body of the Italian country and a standardization ...
The ISO standard specifies type 1 hexagon nuts with thread specifications M1.6~,64 (including M64) and product grades A and B. Grade A is used for thread d≤M16; Grade B is used for nuts with thread d>M16. ISO (International Organization for Standardization) is a worldwide ...