What is the function of a DIN 315 butterfly nut?

The name “butterfly nut” comes from the nut's handle resembling butterfly wings. Butterfly nuts are easy to install and remove, as they can be tightened or loosened by hand, hence they are also called hand-tightening nuts. Common materials include 304/316 stainless steel, zinc-plated carbon steel, and nylon 66. Standard sizes range from M3 to M24, making them widely applicable.

1. Stainless steel butterfly nuts are commonly used in medical devices for their aesthetic appeal and excellent rust resistance.

2. Galvanized carbon steel butterfly nuts are primarily used in office equipment and machinery due to their simple installation and removal, offering convenient operation.

3. Nylon 66 butterfly nuts are employed in the electrical and electronics industries because this material is insulating and effectively prevents signal interference.