Historical
ISO 4766:1983
Slotted set screws with flat point
Specifies the characteristics of products with thread sizes from M 1,2 up to and including M 12 and product grade A; includes specifications with reference to International Standards; tabulates thread sizes M 1,2 up to M 12 with nominal lengths from 2 mm up to 60 mm; gives an example for the designation.
International Organization for Standardization [iso]