thumbtack

Thumbtack, also known as pushpin or drawing pin, is a short metal pin with a broad flat head used to fasten lightweight materials to soft surfaces such as cork boards. The head is large enough to press with a finger; the sharp point pierces the material and holds the item in place.

Construction and variants: The pin is usually steel with a hard, pointed tip and a head made from metal or plastic. Heads come in various shapes, including round, flat, domed, or decorative, and may be colored. Length typically ranges from 8 to 20 millimeters. Some pins are designed with smooth or cushioned heads to minimize surface damage.

Uses and handling: Thumbtacks are commonly used to attach notes, photos, or notices on bulletin boards, cork boards, or foam boards, and are also used in classrooms and offices. They are removed by pulling on the head and should be kept away from lips and mouths to avoid choking hazards. Larger or decorative pins are used for crafts and displays. They can cause damage to fragile surfaces if used improperly, and tip fragments can pose a puncture risk.

History and regional terminology: The modern pushpin was developed in the late 19th century and became widely used in the early 20th century, with many companies manufacturing them in North America and Europe. In the United States the term thumbtack is common, while in the United Kingdom the term drawing pin is often used; map pins are a related variant used on maps. See also: drawing pin, map pin, corkboard.