STAINLESS STEEL FLANGE NUTS SS 304 Serrated Flange Nuts & Stainless Steel Flange Nuts Manufacturers in India. Stainless Steel Flange Nuts manufacturer in India produce nuts of different types. The flange nuts are special in shape and function that it has a flange attached. RIMCO FASTENER is a leading manufacturer and supplier of the Stainless Steel Flange Nuts in different sizes and dimensions. There are different material grades that are used to produce these nuts. The nuts have one end of it flared outward to form a flange. The flange often has serrated surface towards the bolt. The Stainless Steel Serrated Flange Nuts act as washers and at the same time to tighten the nuts together with the bolt, bolt hole and the holding surface. Flange Nuts Suppliers in India, Buy 316 Stainless Steel Flange Nuts, Metric Flange Nuts, Grade 8 flange nuts at factory price, View hex flange nut din 6923 Dimension chart DIN 6923 - Hex Flange Nut