Abstract: A clamp assembly (8) in accordance with the present invention includes a tightening mechanism (10) connected to an elongated, flat metal band (12). The metal band is configured to encircle a conduit. The tightening mechanism (10) includes a saddle (14) securely attached to the band (12). A housing (16) is pivotally and slidably connected to the saddle (14). The housing (16) defines a recess (17) housing a locking worm (18). The locking, worm (18) is rotatable in the housing and defines spiral threads (20) adapted to cooperate with slots (26) defined in the band. The housing (16) is pivotally and slidably connected to the saddle (14) so that the housing is pivotable relative to the saddle and movable in an axial direction substantially parallel to the saddle to further engage and lock with the saddle in a closed position of the tightening mechanism.