Our standard Bevel Washers are G304 Stainless Steel and simply awesome. They are designed to work with flat posts on stairs so they have an industry standard 37 degrees.
They are made from stainless steel and are compatible with fittings of the proper thread size. They have industry standard sizing
M8 Bevel Washers are most often used with the Female Hex Adjusters and the M6 size are most often used with either M6 Swage Bolts or End Stoppers (Rod Terminals) for 3.2mm Stainless Steel Wire Rope.
If you are using tubular posts or require a different angle (you have non-standard stairs), then bevelled washers that are radiused for tubular posts and other angles are available by special order.