This set of 8, Black Oxide Stainless Steel screws, are the same type used on the Collins 516F-2 power supply and the 312B-3 S-Line Speaker. This set of 8 screws are required for one 312B-3 Speaker and 8 screws are enough to replace the grill screws in 2, 516F-2 Power supplies. They are essentially the same as the original, but are made with black oxide stainless steel, rather than soft brass which are easily damaged. This is a very specialized screw that is not available in most hardware supply stores and it was a great effort to find this product to replace worn and missing 516F-2 and 312B-3 Grill screws

• This set of 8, Black Oxide Stainless Steel screws, are the same type used on the Collins 516F-2 power supply and the 312B-3 S-Line Speaker.
• This set of 8 screws are required for one 312B-3 Speaker and 8 screws are enough to replace the grill screws in 2, 516F-2 Power supplies.
• They are essentially the same as the original, but are made with black oxide stainless steel, rather than soft brass which are easily damaged.
• This is a very specialized screw that is not available in most hardware supply stores and it was a great effort to find this product to replace worn and missing 516F-2 and 312B-3 Grill screws

This set of 8, Black Oxide Stainless Steel screws, are the same type used on the Collins 516F-2 power supply and the 312B-3 S-Line Speaker.Imported