34841 - 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 34841 - Key locking (.pdf, 64 kB) Close Ordering Options 10156020018 34841 S/D WITH 2 KEYS ST2 Close 34849 - Key locking closed shackleBlue stripes indicate Security Grade 4 to BS EN 12320.