Padlock, Shackle Dia. 5/16 in, Shackle Height 2 1/2 in, Shackle Width 5/16 in, Shackle Material Boron, Body Height 2 1/2 in, Body Width 2 1/8 in, Body Thickness 3/4 in, Body Material Brass, Number of Bumpers 0, Number of Pins 5 Pin, Key Type Different, Control Key Registration Required Yes, For Use With Lockout/Tagout, Security, Body Color Black, Weather Yes, High Security Yes, Interchangeable Core No, Padlock Body Shape Square, Rekeyable No, Shackle Type Partially Hidden Shackle