To provide a clamp which can route easily a bundle of cables along a prescribed route so as not to be easily removed.

A clamp 10 includes a bundling portion 20 for bundling elongated members, a first receiving portion 24 extending from the first end of the bundling portion and including a first receiving aperture 25, a second receiving portion 26 extending from the second end of the bundling portion and including a second receiving portion 27 alignable with the first receiving aperture; a rivet portion 28 extending perpendicularly from the second receiving portion, configured to be received in a mounting surface aperture and retained therein such that the second receiving portion is flush with the mounting surface, and including a rivet aperture aligned with the second receiving aperture 27; and a retention portion 32 including a resiliently deformable resistance member 42. The clamp 10 is mountable along the mounting surface by inserting the retention portion 32 through the alignable first, second and rivet apertures.