Tacks
Tacks are small fasteners consisting of a short shaft with a broad flat head. They are designed to secure lightweight materials to a backing, usually wood, with a hammer or similar tool. The term covers both nail‑like fasteners used in carpentry and upholstery and pins designed for temporary display on soft surfaces. Tacks are valued for quick installation and easy removal without large holes.
Upholstery tacks or tack nails are short, narrow nails with relatively large heads that can be decorative.
Thumbtacks or drawing pins are separate, pin‑style fasteners with a sharp point and a broad, flat head.
Safety and technique: use a tack hammer to drive tacks squarely and avoid marring surrounding surfaces. Do