head space 66 for this purpose second shank 34 is guided within the head space 66 between the second passage 30 and the end 68 the first shank 32 is guided in a reception groove 72 fig2 arranged at an outside of the housing 20 in the region of the head space 66 adjoining the first passage 28 in particular the reception groove 72 is arranged at a corner of the housing 20 the reception groove 72 extends coaxially with the first passage 28 and is parallel to the second passage 30 of the lock body 12 in the unlocked state of the padlock 10 i e when the locking members 40 42 are retracted from the notches the shackle 14 is slid upwardly with respect to the drawing it can naturally also slide in any direction a in which the padlock 10 is pointing in use whilst the second shank 34 is retained in the housing 20 by means of the shackle retaining pin 44 the distance x the shackle 14 is displaced in the direction a would actually be too small for allowing the pivoting of the first shank 32 about the second shank 34 since the first shank 32 still partly overlaps the housing 20 and the first shank 32 would thus still be stuck within the housing 20 accordingly if the reception groove 72 were not provided the padlock 10 would not function the shackle 14 and the lock body 12 are generally of metal or a metal alloy for example the lock body 12 can be formed by aluminum or an aluminum alloy to save weight as.