530 and 546 and the junction of respective engagement surfaces 548 and 549 of outer body and plug pins 524 and 544 from being located at the shear line 599 between the plug 514 and the body 510 at the same time thus as seen in fig5 c when the junction between respective normally touching engagement surfaces 548 and 549 of outer body pin 524 and outer plug pin 544 is raised to lie at the shear line 599 between body 510 and plug 514 inner plug pin 546 spans the shear line 599 preventing unlocking of the lock furthermore as seen in fig5 c continued application of torque to plug 514 in the direction of arrow 595 during picking causes plug 514 to rotate further in a clockwise direction as indicated by arrow 595 the resulting engagement between clockwise facing wall portion 515 of plug bore 520 with corresponding outer wall portion 517 of outer plug pin 544 pushes outer plug pin 544 further in a clockwise direction causing fall seating of enlarged cylindrical portion 574 of inner plug pin 546 in recess 590 and resulting forcing of base portion 519 of outer body pin 524 clockwise against a facing wall of bore 518 defined by body 510 the various inner and outer body and plug pins are thus seen to be spatially axially and angularly offset from each other and locked together as well as being frictionally bound together by forced engagement therebetween thus rendering picking increasingly difficult it will be appreciated by persons skilled in the art that the present invention is not limited by.