K-caps, also known as K-nuts or keyhole nuts, are specialized fastening components designed for quick and tool-free installation. Characterized by their distinctive keyhole-shaped slots, these caps slide onto studs or bolts, and then rotate to lock in place, creating a secure connection. The unique slot design allows for easy adjustment and removal, making them ideal for applications that require frequent assembly and disassembly, such as furniture, display fixtures, and light machinery. K-caps combine convenience with reliable holding power, providing a practical solution for temporary or semi-permanent connections.