Retaining Ring DIN 471 Material: Carbon Steel Finish:Plain, Zinc, Black Plated Size: M3-M45 DIN472 hole, ... mechanical equipment and archivespecification:Standard: DIN, ANSI, JIS, BSMaterial: Carbon Steel, A2,A4, 304,316Finish:Plain, Zinc, Black PlatedSize: M3-M45Package ... all sizes 2) Competitive price,Good quality,Excellent service carbon steel Retaining Ring