The Hillman Group Hanger Bolts & Dowel Screws: The Hillman Group Bolts 5/16 in.-18 x 3 in. Hanger Bolt (10-Pack) 44950
A Hanger bolt is a headless fastener that has machine screw threads on one end and self-tapping threads on the other. They are designed to hang items like sheet metal and wiring from wooden structures. Designed to be driven into wood or another soft substrate.