Abstract: A hose clamp body for use with a bolt having a shank and a head. A surface on the body grips the hose and an opening generally transverse to a first surface on the body receives the bolt shank. The bolt head is provided with a flat side surface laterally spaced a predetermined distance from the diametrically opposite side of the shank. Provided on the body is a second surface which intersects the first surface and extends away therefrom to an upper edge to form an acute angle relative to the longitudinal axis of the opening. The predetermined distance being less than the transverse distance between the upper edge and the diametrically opposite side of the opening and greater than the transverse distance between the intersection and the diametrically opposite side of the opening so that the flat side of the bolt head engages the body second surface before the bolt head contacts the first surface to prevent the bolt from turning relative to the body.