Material: steel, galvanized TYPE: HEXAGONAL NUTS FOR THREAD SIZE: M12 X 1.75 FOR SCREWS-Ø: 12.0 MM SELF-LOCKING: YES WRENCH WIDTH: 19MM Material: Steel SURFACE: GALVANIZED RESISTANCE CLASS: NO RESISTANCE CLASS DIN: 985 DIN EN ISO: 10511 SPECIALTY: SICHERUNGSMUTTER MIT KUNSTSTOFFRING