C35841 - Key locking Application Blue stripes indicate Security Grade 4 to BS EN 12320. Specification Padlock body of hardened steel, black chrome plated. Shackle of rustproofed hardened steel, 10mm diameter.Drainage holes in the padlock body prevent freezing. No external screws or rivets.Tensile strength: over 4½ tons. Finish Standards Downloads C35841 - Key locking (.pdf, 65 kB) Close Ordering Options 10147709018 C35841 M/K NO KEYS Close C35849 - Key locking closed shackleBlue stripes indicate Security Grade 4 to BS EN 12320.