Hillman No. 6 X 3/8 in. L Slotted Hex Washer Head Self-Piercing Screws 100 pk

These self-piercing screws feature a washer-like head design to help provide great holding power and stability. There is no pre-drilling required, making these easy to use. Ideally, they are used for thin metal, such as sheet metal and duct work. *