A clamp assembly for securing wire bundles to a structure having a body and a strap hinged to the body having an axis of rotation. The body has a ramp with a surface and has a latch wall portion. The strap has a locking wall portion wherein a radial distance from the surface to the axis of rotation decreases as the surface extends in a direction away from the strap such that with the strap in contact with the surface and slid along in contact with the surface, the strap resiliently bends in a direction toward the a first end of the strap. With the strap moved beyond the surface, the strap resiliently bends in a direction away from the first end of the strap, placing the locking wall portion in abutting relationship with the latch wall portion and positioning the strap and the body in a closed locked position.