H Paulin 537-377 8 x 9/16-inch Slot Drive Indented Hex Head Type 'S' Metal Screw, 1000pcs

Paulin S-Point Metal Duct Screws are designed to join thinner metal sheets to one another, as well as to fasten metal to wood, plastic and other materials. Hex washer head with slotted drive type distributes stress and better protects finish.