Specification IS 5370 -1969 Material : Brass Sheet half hard as per IS 410 or 63/37 half hard Brass Sheet. Size specification or as per custom design or requirement. Finish And Coating Natural, Nickel Plated, Tin Plated or any coating as per customer specification. Any kind of brass washers can be developed and supplied exactly as per customer specifications FLAT WASHERS SPLIT LOCK WASHERS SPLIT SPRING WASHERS - CURVED SPRING WASHERS - CURVED SPRING WASHERS - WAVED SPRING WASHERS - CONICAL EXTERNAL TAB WASHERS INTERNAL TAB WASHERS EXTERNAL TOOTH LOCK WASHERS INTERNAL TOOTH LOCK WASHERS EXTERNAL SERRATED LOCK WASHERS INTERNAL SERRATED LOCK WASHERS SQUARE WASHERS SEALING WASHERS HI - COLLAR LOCK WASHERS TAB WASHERS WITH LARGE TAB SHIM WASHERS DIN 125, 126, 433, 440, 1052, 1440, 7349, 7989, 9021 DIN 127 DIN 128 DIN 137A, 151 DIN 137B DIN 6796 DIN 432 DIN 462 DIN 6797A DIN 6797J DIN 6798A DIN 6798J DIN 436 DIN 7603 DIN 7980 DIN 93 DIN 988 FINISH & COATING : NATURAL FINISH, YELLOW ZINC PLATED, BLUE ZINC PLATED, BLACKENING, NICKLE PLATED AND TIN PLATED. Besides the above mention washers, we also have others sheet metal parts and electrical contact parts as per customer's drawing and specifications.