EN 1664Prevailing torque type all-metal hexagon nuts with flange
GB/T 6187.1Metric all metal hex flange lock nuts,style 2
ISO 7044Prevailing torque type all-metal hexagon nuts with flange
JIS B1199-4-1.1Prevailing torque type all-metal hexagon nuts with flange-Table 1-1
NF E25-414Prevailing torque type all-metal hexagon nuts with flange
Q 330Prevailing torque type all-metal hexagon nuts with flange