Thumbtack

Thumbtacks are small, pointed metal or plastic pins with a flat, round head. They are commonly used to secure papers or other lightweight materials to a bulletin board, corkboard, or other surfaces. Thumbtacks are part of the supply class Office Supplies, which includes various items used in office settings such as pens, paper clips, staplers, and tape. They belong to the supply group Office Supplies And Devices, which encompasses a broader range of office-related items including electronic devices, furniture, and other equipment.