Solid Black Countersunk Finishing Washers Stainless Steel Cup (10, M8)

[ BLACK STAINLESS STEEL FINISHING WASHERS] made of Stainless Steel A4, Beautiful black stainless steel countersunk washers. [ BLACKENED COUNTERSUNK WASHERS ] - High quality Stainless Steel blackened washers made of durable A4 stainless steel [ BLACK COUNTERSUNG SOLID CUP WASHERS ] - Marine Grade - The superior corrosion resistance of these A4 grade finishing washers make them a great choice for sailing, motor boating and other water-sports applications [ SOLID CUP FINISHING WASHERS ] wide range of sizes and durable material which means they are perfectly suited to a range of practical tasks. [ STAINLESS STEEL BLACK CUP FINISHIG WASHERS ] A chemical black finish is also referred to as black oxide or blackening. It is a ‘conversion coating’, which is a coating for metal where the surface of the part is subjected to a chemical or electrochemical process by the coating material, converting it into a decorative or protective substance.