24249 - Key locking closed shackle Application Green stripes indicate Security Grade 3 to BS EN 12320. Specification Padlock body of extruded brass, black chrome plated.Shackle of rustproofed hardened steel, 8mm or 10mm diameter.Drainage holes in the padlock body prevent freezing. No external screws or rivets.Tensile strength over 1½ tons. Finish Standards Downloads 24249 - Key locking closed shackle (.pdf, 56 kB) Close 24243 - Key locking extended shackleGreen stripes indicate Security Grade 3 to BS EN 12320. 24241 - Key lockingGreen stripes indicate Security Grade 3 to BS EN 12320. 24246 - Key locking 10mm dia. shackleGreen stripes indicate Security Grade 3 to BS EN 12320.