ISO 7379-8-M6-20 ISO 7379-8-M6-20-NI ISO 7379-8-M6-25 ISO 7379-8-M6-25-NI ISO 7379-8-M6-30 ISO 7379-8-M6-30-NI ISO 7379-8-M6-35 ISO 7379-8-M6-40 ISO 7379-8-M6-40-NI ISO 7379-8-M6-45