Reports the limit dimensions for screws with tolerance 6g (coarse pitch and fine pitch) and for nuts with tolerance 6h (coarse pitch and fine pitch) (see UNI 4536-64). Unit of measurement: millimeters. Screw lengths. Coated threads.
UNI 5545-1965 history
1965UNI 5545-1965 Iso metric threads with triangular profile. Limits of size of the medium class thrads with 6h/6g tolerance, for bolts, screws and nuts.