This standard specifies the connection dimensions and materials for pin bolts made of cupper-zinc-alloy, as they used on ships, to ensure their interchangeability and usability.
DIN 81411:2018 Referenced Document
DIN 74:2003 Countersinks for countersunk head screws except countersunk head screws with heads according to DIN EN 27721
DIN EN 12168:2016 Copper and copper alloys - Hollow rod for free machining purposes; German version EN 12168:2016
DIN EN ISO 1456:2009 Metallic and other inorganic coatings - Electrodeposited coatings of nickel, nickel plus chromium, copper plus nickel and of copper plus nickel plus chromium (ISO 1456:2009); German version EN ISO 1456:2009
DIN EN ISO 15065:2005 Countersinks for countersunk head screws with head configuration in accordance with ISO 7721 (ISO 15065:2005); German version EN ISO 15065:2005
DIN ISO 2768-1:1991 General tolerances; tolerances for linear and angular dimensions without individual tolerance indications; identical with ISO 2768-1:1989