Alcance
ISO 11381:2016 specifies requirements for ISO metric screw threads for use with spectacle frames. Provision is made for screw threads of the following nominal sizes: S0,8 � 0,2; M1,0 � 0,25; M1,2 � 0,25; M1,4 � 0,3; M1,6 � 0,35 and M2,0 � 0,4 and for related taps and gauges.