the retaining lug 42 projected to its locking position so as to lock the core in place in the body 18 the two lobes of the core will then lie in the grooves 54 of the cable end members 52 to securely lock those cable end members in the body 18 and block their removal the cables 16 are secured against separation from the items of equipment which it is desired to secure against removal this may be done in various ways for example by connecting the opposite ends of the cables to the equipment by passing the cables through openings in the equipment etc for convenience i provide securing plates 14 as shown in fig8 which may be fixed on the equipment and retain the opposite ends of the cables these consist of a flat base portion 56 having a series of several holes therein which may be used together or selectively to fix the plate 14 to an item of equipment to be secured the plate has an upstanding end arm 58 containing a hole 60 to pass a cable 16 and its end member 52 the opposite end of the cable 16 is fixed in a headed member 62 having a shank swaged or otherwise fixed to the cable end and adapted to pass through the hole 60 and having an enlarged head 64 which secures the cable against removal from the plate as shown in fig9 the securing plate may be mounted horizontally on the base 12a of an item of equipment or as shown in fig1 may be mounted edgewise or vertically against the face of an item 12b of equipment alternatively.