A clamp head including an arched body having upper and lower faces, and opposing unequal length arms. The body further has a through aperture for a bolt or like threaded fastener extending between the upper and lower faces, the through aperture tapering outwardly through the body in the direction of the lower face. The arms comprise a reaction arm having at its distal end a curved reaction face and a clamping arm having at its distal end a curved clamping face. The curved reaction face has a first edge that is proximal to the reaction face and a second edge that is distal to the reaction face, wherein the radius of curvature of the reaction face increases in the direction of the second edge.

A fastener arrangement with a fastener designed for fastening to a substrate via an adhesive agent, and with an object having an object mount, whereby the object mount can be fixed to the fastener fastened to the substrate. The fastener has a reinforcement part made of a metallic material having a flat body with openings and side wall elements adjoining it. The side wall elements are mounted between a retaining ring and wall segments of a ring-shaped holder and are designed for fixing the object mount. There is an adhesive reservoir, the bottom of which facing the substrate is only delimited by the flat body. The top of the adhesive reservoir is delimited by a press-on element; via a displacement of the press-on element in the axial direction, adhesive agent is guided out of the adhesive reservoir solely through the openings in the flat body of the reinforcement part.

A tool-less assembly includes a tooling apparatus including a support plate defining a support opening that extends through the support plate, a base plate including a base opening that extends through the base plate, and an attachment apparatus extending through the support opening and the base opening. The attachment apparatus includes a handle that moves between an opened position and a closed position, a fastener attached to the handle and extending through the support opening and the base opening, and an anchor attached to the fastener.