A thumbtack (known as a pushpin or a drawing-pin in the UK, India, Australia and New Zealand) is a short nail or pin with a large, slightly rounded head made of metal which is used to fasten documents to a background for public display and which can easily be inserted or removed by hand. Types of Thumbtack The most common thumbtacks are made by attaching a brass stem to a flat brass head. Some have coloured plastic tops, to make them more attractive. Map Pins, or push pins, are also a type of t… (More on Thumbtack)