A fastening system including a connector element (12) including a conical head portion (14) from which extends a threaded shank (16), a hole (18) being formed through the head portion (14) and the shank (16), the head portion being resiliently squeezable in a generally radially inwards direction, the hole (18) being adapted for an elongate element (26) to passes therethrough, a sleeve member (72) formed with a countersunk aperture (74), an outer surface of the sleeve member being formed with anchoring protrusions (78), and a threaded nut element (32) threadedly fastened to the threaded shank (16), wherein tightening of the threaded nut element (32) moves and wedges the conical head portion (14) against the countersunk aperture (74) and squeezes the head portion radially inwards. Examples of articles constructed with the fastening system are shown and described.