. A flat washer is a thin, usually round, plate with a hole in the middle that is normally used to distribute the load of a threaded fastener.Flat Washer, For Screw Size 5/8" ,18-8 Stainless Steel Polished Finish, 4 PK SAE flat washers are machined to a tighter specification and have a smaller outside diameter.
.Hanger Bolt, 1/4 in Thread to 1/4"-20 Thread, 2 3/4 in, Steel, White Ruspert Finish, 25 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.
Self-Drilling Screw, #10 x 1-1/2 in, Zinc Plated Steel Hex Head Hex Drive, 3000 PK A self-drilling screw, or tek screw, is similar to a sheet metal screw, but it has a drill-shaped point to cut through the substrate to eliminate the need for drilling a pilot hole.