This International Standard specifies the cutting and perforating dimensions for 35 mm motion-picture raw stock either with five rows of perforations in positions 1-3-5-7-0 or with two rows of perforations in positions 1-0, as well as the width of the 8 mm strip after processing and slitting the print stock.
GSO ISO 3774:2016 history
2016GSO ISO 3774:2016 Cinematography -- 35 mm motion-picture film perforated 8 mm Type S (1-3-5-7-0) and (1-0) -- Cutting and perforating dimensions