Hanger Bolt, 5/16 in Thread to 5/16"-18 Thread, 1 3/4 in, Steel, Plain Finish, 100 PK A hanger bolt is a headless fastener that has machine screw threads on one end and self-tapping threads on the other designed to be driven into wood or another soft substrate.
#8-32 x 1-1/4 in Phillips Oval Machine Screw, Plain Stainless Steel, 100 PK Machine screws are used in fastening nearly all types of hard materials.. Especially useful in metal-to-metal or where heavy duty fastening is required.